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8 Settings

Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017-03-09

108

8.5.2 Regulating the active power via the grid

frequency

These parameters are set according to the

requirements of the selected country. Changing

these parameter settings can invalidate the type

approval of the unit. Change this setting only after

consultation with Delta customer service.

Overview

This function allows you to regulate the active power fed into the

grid via the grid frequency.

Standard behavior of low-voltage power grids in Germany

(VDE-AR-N 4105)

Standard behavior of medium-voltage power grids in Ger-

many (BDEW)

f (Hz)

frestart = f

start

stop

Gradient (%/Hz)

f (Hz)

restart

stop

Gradient (%/Hz)

start

When the grid frequency exceeds f

start

the instantaneous value

of the active power is stored and the fed active power is reduced

according to the gradient.
The active power is regulated according to the gradient as long as

the grid frequency lies between f

start

and f

stop

The active power feed is stopped when the grid frequency

exceeds f

stop

feeding remains stopped until the grid frequency falls below f

start

again.
Feeding is resumed at the stored instantaneous value when the

grid frequency falls below f

start

again.

When the grid frequency exceeds f

start

the instantaneous value

of the active power is stored and the fed active power is reduced

according to the gradient.
The subsequent grid feed behavior depends on changes in the

grid frequency.
a)
When the grid frequency falls again, the fed active power stored

at this time is maintained before reaching f

stop

Feeding is resumed at the stored instantaneous value when the

grid frequency falls below f

restart

b)
The active power feed is stopped when the grid frequency

exceeds f

stop

Feeding remains stopped until the grid frequency falls below f

re-

start

Feeding is resumes at the stored instantaneous value when the

grid frequency falls below f

restart

again.

stop

is automatically calculated using the following formula:

stop

= f

start

+ (1 / gradient)

Summary of Contents for RPI M50A

Page 1: ...Installation and operation manual RPI M50A_12s Solar Inverter Europe general United Kingdom ...

Page 2: ......

Page 3: ...in this manual is to be treated as confidential and no part of this manual may be reproduced without prior written permission from Delta Energy Systems The information in this manual may not be used for any purpose not directly connected to use of the inverter All information and specifications can be modified without prior notice If you notice discrepancies between the descriptions in this quick ...

Page 4: ...ing installation 21 5 1 Installation location 21 5 2 Outdoor installations 22 5 3 Installation clearances and air circulation 23 5 4 Characteristic curves 25 5 5 Dimensions 29 5 6 AC connection grid 30 5 6 1 Important safety instructions 30 1 1 1 Residual current circuit breaker 30 5 6 2 Integrated residual current monitoring unit 30 5 6 3 Integrated string fuses and surge protection devices 30 5 ...

Page 5: ...ring for a single inverter 55 6 5 3 2 Wiring for multiple inverters 56 6 5 4 Connecting an external alarm unit 59 6 5 4 1 Wiring for an external alarm unit with an external 12 VDC power supply 59 6 5 4 2 Wiring for a single alarm unit with an internal 12 VDC power supply 60 6 5 4 3 Wiring for two alarm units with an internal 12 VDC power supply 61 6 5 5 Connecting digital inputs and external power...

Page 6: ...a the grid voltage 111 8 5 4 Constant cos phi cos φ 113 8 5 5 Cos phi P regulate cos phi via active power 115 8 5 6 Constant Q constant reactive power 117 8 5 7 Q V Regulating reactive power via voltage 119 8 6 FRT Fault Ride Through 122 9 Measurements and statistics 124 9 1 Measurements 124 9 2 Energy log 125 9 3 Event log 126 9 3 1 Error events 126 9 3 2 Grid report 127 10 Error events and troub...

Page 7: ...o are trained and approved for the installation commissioning and operation of solar inverters in grid connected solar systems 1 3 Warning notices and warning symbols This manual uses the following warning notices and symbols for describing potential dangers and the measures necessary for reducing these dangers Always follow the instructions in the warning notices Warning levels DANGER Indicates a...

Page 8: ...performed in the specified sequence 1 First step Where necessary the result of the work step is de scribed here This is used for checking that the work step has been completed correctly 2 Second step 3 Third step þ þ Work step is now finished If the work instructions consist of only a single step or the work steps can be performed in any desired sequence then the work steps are labeled as follows ...

Page 9: ...essary Do not remove the cover if water might enter the inverter After work is completed ensure that the cover is properly replaced and screwed in Check that the cover is properly sealed WARNING Heavy weight The inverter is very heavy The inverter must be lifted and carried by at least 3 people or using appropriate lifting gear To comply with the IEC 62109 5 3 3 safety requirements and avoid injur...

Page 10: ...ed to the public grid for converting DC voltage generated by the solar modules in the solar system into AC voltage that is fed into the public grid Use in conformance with the power specifications and envi ronmental conditions specified by the manufacturer The following uses are regarded as not the intended purposes Use in stand alone mode i e without a connection to the public grid The inverter h...

Page 11: ...ngs DC plug 12 Multi Contact MC4 plug for DC 32 0017P0001 UR for 4 6 mm2 Grounding screw 1 To ground the inverter housing with spring washer washer and lock washer mounted on the inverter 12 Multi Contact MC4 plug for DC 32 0016P0001 UR for 4 6 mm2 Quick installa tion guide and basic safety instructions 1 Installations und Betriebshandbuch RPI M50A_12s Deutschland Österreich Schweiz Belgien Check ...

Page 12: ...ons and LED See 4 3 Display buttons status LEDs page 13 2 Fuse box with string fuses and overvoltage conductors See 4 4 String fuses page 14 and 4 5 Surge protection devices page 15 3 Air inlets See 4 6 Air inlets air outlets and fans page 15 4 Electrical connections See 4 7 Electrical connections page 16 5 Fans See 4 6 Air inlets air outlets and fans page 15 6 Type plate See 4 8 Information on th...

Page 13: ...supplying power to the grid Alarm Alarm Red LED displays a warning an error or a fault Buttons EXIT Exit Exit the current menu Cancel the setting of a parameter Changes are not adopted Down Move downwards in the menu Reduce the value of a configurable parameter Up Move upwards in the menu Increase the value of a configurable parameter ENT Enter Select menu item Open a configurable parameter for ed...

Page 14: ...s on the inverter Fig 4 4 Assignment of the string fuses to the DC inputs The inverter has string fuses on the DC side Fig 4 5 The inverter uses Littlefuse string fuses Type Manufacturer Littelfuse Part number 0SPF015 T Nominal current 15 A Nominal voltage 1000 V or Manufacturer Hollyland Part number 10GPV15UO Nominal current 15 A Nominal voltage 1000 V ...

Page 15: ...surge protection devices are located behind the fuse box cover Type for the AC side Type 2 OCM as per EN 61643 11 Nominal current In 10 kA 8 20 Maximum current Imax 20 kA 8 20 Voltage UP 1 8 kV Type for the DC side Type 2 OCM as per EN 50539 11 Current In 20 kA 8 20 Current Imax 40 kA 8 20 Voltage UP 3 9 kV 4 6 Air inlets air outlets and fans Fig 4 8 Air inlets are located at the top of the left a...

Page 16: ...ounding connection page 17 2 AC DC disconnector DISCONN AC DC Further information is provided in 4 7 3 AC DC disconnector page 17 3 AC connection AC OUTPUT Further information is provided in 4 7 4 AC connection AC OUTPUT page 18 4 DC connections DC INPUT Further information is provided in 4 7 5 DC connection DC INPUT page 18 5 Communication port 1 COMM Further information is provided in 4 7 6 Comm...

Page 17: ...ia the grounding connec tion M6 screw spring washer washer and toothed lock washer are already mounted on the inverter 4 7 3 AC DC disconnector Fig 4 12 Position of the AC DC disconnector on the inverter The inverter is disconnected from the grid and the solar mod ules when the AC DC disconnector is in the OFF position The inverter is connected to the grid and the solar modules when the AC DC disc...

Page 18: ... types that can be used Grids with 3 phases and a neutral conductor 3P4W L1 L2 L3 N PE Mains grids with 3 phases and without a neutral conductor 3P3W L1 L2 L3 PE Plug type required China Aviation Optical Electrical Technology Co PVE5T125KE36 The AC plug is included in the scope of delivery 4 7 5 DC connection DC INPUT Fig 4 14 Position of the DC connections on the inverter The solar modules are co...

Page 19: ...he inverter Available connections Connection Connection type 2x RS485 DATA and DATA Terminal block 1x VCC 12 V 0 5 A Terminal block 6x digital inputs Terminal block 2x dry contacts Terminal block 1x external power off EPO Terminal block 4 7 7 Communication port 2 Fig 4 16 Position of communication connection 2 on the inverter Communication connection 2 is not used on this inverter ...

Page 20: ... the applicable electronic waste disposal regulations of your country or region DC input 200 1000 V DC DC input voltage range MPPT 520 800 V DC MPP input voltage range at full power with symmetrically configured DC inputs 1000 V DC Maximum DC input voltage 50 A 2 max Maximum DC input current 50 A at DC1 and DC2 respectively Isc 60 A 2 max DC short circuit current AC output 220 380 230 400 Vac AC n...

Page 21: ...inverter Always use the mounting plate supplied with the inverter Use mounting materials dowels screws etc that are suitable for the wall or the mounting system as well as the heavy weight of the inverter Mount the inverter on a vibration free wall to avoid malfunc tions When using the inverter in residential areas or in buildings with animals possible noise emissions can be disturbing Therefore c...

Page 22: ...on rain and snow For example the power of the inverter will be reduced if it is too heavily heated by solar irradiation This is normal operat ing behavior for the inverter and is necessary to protect the internal electronics In areas with many trees or fields pollen and other plant material can clog the air inlets or fans One solution is to cover the air inlets This must not hinder the flow of air...

Page 23: ...ugh space around each inverter Do not install inverters above one another so that they do not heat each other Note the Operating temperature range without derating and the Operating temperature range When the Operating temperature range without derating is exceeded the inverter reduces the AC power fed into the grid When the Operating temperature range is exceeded the inverter stops feeding AC pow...

Page 24: ...5 Planning installation Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 24 Fig 5 1 Air flow around solar inverters ...

Page 25: ...lanning installation 5 4 Characteristic curves 50 55 60 65 70 75 80 85 90 95 100 105 110 115 25 30 35 40 45 50 55 60 P Pn Pn 50 kW 800 VDC 600 VDC 520 VDC S VA P W Ambient temperatures C Fig 5 2 Characteristic curve Power reduction depending on the ambient temperature cos φ 1 0 derating ...

Page 26: ...1 EU EN 2017 03 09 26 50 55 60 65 70 75 80 85 90 95 99 105 110 115 25 30 35 40 45 50 55 60 P Pn Pn 50 kW 800 VDC 600 VDC 520 VDC 800 VDC 600 VDC 520 VDC P W S VA Ambient temperatures C Fig 5 3 Characteristic curve Power reduction depending on the ambient temperature cos φ 0 95 derating ...

Page 27: ...Planning installation 50 55 60 65 70 75 80 85 90 95 100 105 110 115 25 30 35 40 45 50 55 60 P Pn Pn 50 kW 800 VDC 600 VDC 520 VDC 800 VDC 600 VDC 520 VDC P W S VA Ambient temperatures C Fig 5 4 Characteristic curve Power reduction depending on the ambient temperature cos φ 0 90 derating ...

Page 28: ...llation Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 28 92 93 94 95 96 97 98 99 100 15 20 5 0 10 25 30 35 40 45 50 800 VDC 600 VDC 520 VDC Power kW Efficiency Fig 5 5 Efficiency curve ...

Page 29: ...stallation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 5 Planning installation 5 5 Dimensions 82 460 14 31 14 128 20 193 25 612 101 12 278 198 740 402 12 435 6 5 5 5 Fig 5 6 Dimensions ...

Page 30: ...ed minimum tripping cur rent 5 6 2 Integrated residual current monitoring unit The integrated universal current sensitive residual current moni toring unit RCMU is certified in accordance with VDE 0126 1 1 A1 2012 02 6 6 2 5 6 3 Integrated string fuses and surge protec tion devices Replace damaged string fuses and surge protection devices with devices of the same type and from the same manufac tur...

Page 31: ...0 L3 N 230 VAC 20 5 7 DC connection solar modules NOTICE Incorrectly dimensioned solar system An solar system of the wrong size may cause damage to the inverter Always pay attention to the technical speci fications of the inverter input voltage range maximum current and maximum input power when calculating the number of solar mod ules NOTICE Overheating of the DC connections Exceeding the maximum ...

Page 32: ...ivided between DC 1 and DC 2 within a range of 60 40 to 40 60 A distri bution of 55 45 or 45 55 is also possible for example The percentages relate to the instantaneous input power With an east west roof mounted system this allows installing 60 of the maximum input power on both roofs This utilizes the effect that the solar modules on both roofs provide maximum power at different times of the day ...

Page 33: ...allel connected DC inputs Separately connected DC inputs DC wiring PV array Fig 5 10 Separately connected DC inputs The module strings for DC1 and DC2 are connected sepa rately MPP tracker 1 regulates the module strings at DC1 MPP tracker 2 regulates the module strings at DC2 This allows implementation of symmetric and asymmetric config urations at the DC inputs This DC cabling variant cannot be u...

Page 34: ...n box Fig 5 11 Parallel connected DC inputs The module strings are combined at a distribution box and the DC cable is then connected to DC1 and DC2 MPP tracker 1 regulates all module strings MPP tracker 2 is not used This allows implementation of symmetric configurations only at the DC inputs This DC cabling variant is mandatory by law for use with grounded solar modules ...

Page 35: ...g solar modules that are not grounded The DC inputs can be connected to the DC inputs separately or in parallel when using non grounded solar modules 3P4W 3P3W 1 L1 2 L2 3 L3 4 N 5 PE 1 L1 2 L2 3 L3 PE Separate or parallel DC inputs AC wiring DC wiring PV array Fig 5 12 System design when using non grounded solar mod ules ...

Page 36: ...grid and the AC connection of the inverter The insulation monitoring can be set on the inverter display after commissioning see 8 4 2 Insulation page 84 1 L1 2 L2 3 L3 4 N 5 PE 1 L1 2 L2 3 L3 PE 3P4W 3P3W Z Z parallel DC inputs ONLY Distribution Box DC wiring PV array Positive grounding Negative grounding OR Utility 3 phase 230 400 VAC star or delta connection Inverter 230 400 VAC Isolated transfo...

Page 37: ...ng the DC strings to the DC inputs Check the polarity of the DC voltage at the DC strings before connecting the solar modules to the inverter Connect the negative pole of the solar modules to DC connect the positive pole to DC Connecting a single DC string to a DC input Fig 5 14 Connecting a single DC string to a DC input ...

Page 38: ...If you want to order more or need a different size see the infor mation in the following table a b DC connections on the inverter DC plugs for DC cables a b MultiContact mm2 mm DC 1 5 2 5 3 6 32 0010P0001 UR 5 5 9 32 0012P0001 UR 4 6 3 6 32 0014P0001 UR 5 5 9 32 0016P0001 UR 1 DC 1 5 2 5 3 6 32 0011P0001 UR 5 5 9 32 0013P0001 UR 4 6 3 6 32 0015P0001 UR 5 5 9 32 0017P0001 UR 1 1 Included in deliver...

Page 39: ... must be set at each inverter Otherwise the data logger cannot identify the individual inverters Set the same RS485 baud rate at all inverters Lay the cable with a suitable clearance to the AC and DC cables to prevent interference in the data connection Cable requirements Shielded twisted pair cable CAT5 or CAT6 with solid con ductors Cable diameter 5 mm Wire cross section 1 mm2 5 9 Connecting an ...

Page 40: ...con ductors Cable diameter 5 mm Wire cross section 1 mm2 5 11 External power off The inverter has a multifunction relay allowing an external shut down of the inverter to be triggered Pin assignments Pin Designa tion Short cir cuit Assigned action 1 V1 2 K0 V1 K0 External power off EPO 3 K1 V1 K1 Maximum active power lim ited to 0 4 K2 V1 K2 Maximum active power lim ited to 30 5 K3 V1 K3 Maximum ac...

Page 41: ...s the inverter from the grid in less than 100 ms This inverter satisfies the requirements of 2 when the following firmware versions are installed DSP 1 30 RED 1 20 COMM 1 10 External grid and system protection is not necessary for inverters with these firmware versions 5 13 Connecting a PC The inverter settings can be changed using a PC This requires the following accessories Accessories Descripti...

Page 42: ...ion of the inverter e g brick wall concrete wall metal frame etc Dow els washers lock washers nuts etc Always take the conditions at the installation location into account when selecting the mounting materials Galvanic corrosion can occur when using mounting materials made of differ ent materials 5 14 2 For connecting to the grid AC Part Quantity Description AC cable See 5 6 4 Cable requirements p...

Page 43: ...s must be used DC mounting tool 1 Mounting tool for disconnecting the DC plug and the DC protective caps from the DC connections Available from Multi Contact 5 14 4 For grounding the inverter housing Part Quantity Description Grounding cable with cable lug Typically a yellow green copper cable with a conductor cross section of at least 6 mm2 Always observe the local regulations relating to groundi...

Page 44: ...ts Part Quantity Description Warning stickers Observe the local regulations regarding the application of warning labels Do not work on this equipment until it is located from both mains and on site generation supplies WARNING Dual supply Isolate on site Generation Unit s at ____________________________________ Isolate mains supply at _____________________________________________ Warning Only perso...

Page 45: ...tly on the solar modules Never disconnect the inverter from the solar modules when it is under load Turn the AC DC disconnector to the OFF position Disconnect the connection to the grid so that the inverter cannot supply energy to the grid Disconnect the inverter from all AC and DC voltage sources Ensure that none of the con nections can be restored accidentally Ensure that the DC cables cannot be...

Page 46: ...ion and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 46 6 3 Mounting the inverter 1 Attach the mounting plate to the wall the mounting system with 6 or 12 M6 screws 2 Mount the inverter on the mounting plate ...

Page 47: ...anual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 6 Installation 3 Check that the inverter is correctly mounted on the mount ing plate 4 Check that the lower end of the inverter is correctly posi tioned on the wall mounting system ...

Page 48: ...6 Installation Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 48 5 Check that the inverter is correctly mounted on the mount ing plate ...

Page 49: ...ing even when this is not required by the local regulations Always ground the inverter housing before connecting the inverter to the grid and solar modules 1 Screw the grounding cable onto the inverter M4 screw spring washer washer and lock washer are already mounted on the inverter 2 Perform a continuity check of the grounding connection If there is insufficient conductive connection scratch away...

Page 50: ...s for RS485 the dry contacts the digital inputs and the external shutdown EPO are all on the communication card This means that the installation work can be combined 6 5 1 Components of the communication card 3 1 2 4 1 2 x dry contacts terminal box 2 DIP switch for RS485 termination resistor and VCC 3 Digital inputs and external power off terminal block 4 RS485 terminal block 5 Protection against ...

Page 51: ...RPI M50A_12s V1 EU EN 2017 03 09 6 Installation 6 5 2 Initial steps 1 Unscrew the cable gland of the communication connection and remove the cable gland and seal 2 Unscrew and carefully pull out the cover The communica tion card is screwed to the cover ...

Page 52: ...r RPI M50A_12s V1 EU EN 2017 03 09 52 3 Remove the same number of rubber plugs from the seal corresponding to the number of cables to be connected Do not remove the rubber plugs from the unused seal feed throughs 4 Pull the cable through the cable gland and seal ...

Page 53: ...l assignments of the RS485 terminal block 1 2 3 4 5 6 1 VCC 12 V 0 5 A 2 GND 3 D DATA RS485 4 D DATA RS485 5 D DATA RS485 6 D DATA RS485 Terminal pairs 3 4 or 5 6 can be used The second terminal pair is only required when connecting several inverters via RS485 Data format Baud rate 9600 19200 38400 standard 19200 Data bits 8 Stop bit 1 Parity Not applicable The baud rate can be set on the inverter...

Page 54: ...ters If the data logger does not have an integrated RS485 termi nation resistor switch on the RS485 termination resistor on the first inverter Set a different inverter ID at each inverter during commis sioning of the inverters ON 1 ON 1 ON 1 RS485 Termination resistor ON Termination resistor OFF Termination resistor OFF Data logger ...

Page 55: ...nverter RPI M50A_12s V1 EU EN 2017 03 09 6 Installation 6 5 3 1 Wiring for a single inverter 1 Connect the DATA wire to terminal 5 and the DATA wire to terminal 6 2 Put the DIP switch for the RS485 termination resistor DIP 2 in the ON position ...

Page 56: ...e inverters Data logger 1 On the cable coming from the data logger Connect the DATA wire to terminal 5 and the DATA wire to terminal 6 On the cable going to the second inverter Connect the DATA wire to terminal 3 and the DATA wire to terminal 4 2 Put the DIP switch for the RS485 termination resistor DIP 2 in the OFF position ...

Page 57: ...r 1 On the cable coming from the previous inverter Connect the DATA wire to terminal 5 and the DATA wire to termi nal 6 On the cable going to the next inverter Connect the DATA wire to terminal 3 and the DATA wire to terminal 4 2 Put the DIP switch for the RS485 termination resistor DIP 2 in the OFF position ...

Page 58: ...nd Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 58 Data logger 1 Connect the DATA wire to terminal 5 and the DATA wire to terminal 6 2 Put the DIP switch for the RS485 termination resistor DIP 2 in the ON position ...

Page 59: ... prevent interference in the data connection 6 5 4 1 Wiring for an external alarm unit with an external 12 VDC power supply The external alarm unit must be connected to an external power supply if the internal 12VDC power supply is not used A B Dry contacts plug Strobe light Buzzer Fig 6 15 Connection example Dry contacts with an external power supply 1 Connect two wires of the cable to one of the...

Page 60: ...le 1 1 dry contact with an internal 12 VDC power supply for an external alarm unit variant 1 A B GND VCC D D D D RS485 terminal block Dry contacts plug Strobe light Fig 6 17 Connection example 2 1 dry contact with an internal 12 VDC power supply for an external alarm unit variant 2 1 Connect the wires according to the desired connection dia gram see Connection examples page 60 2 After commissionin...

Page 61: ... 2 dry contacts with an inter nal 12 VDC power supply for 2 external alarm units variant 1 A B GND VCC D D D D RS485 terminal block Dry contacts plug Strobe light Buzzer Strobe light Buzzer Fig 6 19 Connection example 4 2 dry contacts with an inter nal 12 VDC power supply for 2 external alarm units variant 2 1 Connect the wires according to the desired connection dia gram see Connection examples p...

Page 62: ...m active power to 100 7 K5 V1 K5 Reserved 8 K6 V1 K6 Reserved After commissioning the relays can be defined as make contact or break contact for the external shutdown on the display 8 4 8 EPO External power off page 101 Wiring examples Fig 6 20 Connection example 7 Connecting an external power off Connecting a ripple control receiver Power limiting to Short circuit 0 Terminals V1 and K1 30 Termina...

Page 63: ...respond to a standard CAT5 cable and may differ in other cables The wire colors have no effect on the function of the wiring 1 Connect the wires according to the desired connection diagram 2 After commissioning the relays can be defined as make con tact or break contact for the external shutdown on the display see 8 4 8 EPO External power off page 101 ...

Page 64: ...Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 64 6 5 6 Final work 1 Fit the communication card cover and screw in place 2 Fit the seal and cable gland and screw the cable gland tight ...

Page 65: ... conductor the AC connection must be changed via the display to 3P3W after commissioning see 8 4 9 AC connection page 102 Connecting to a 3 phase grid with a neutral conductor 3P3W L1 L2 PE L3 Connecting to a 3 phase grid without a neutral conductor 3P4W L1 L2 PE N L3 1 Pull all necessary parts of the AC plug over the cable The parts required depend on the cable diameter see figure on the followin...

Page 66: ...nstallation Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 66 30 8 44 7 mm 26 9 32 6 mm 21 9 27 6 mm 1 2 3 4 D1 D2 1 2 3 4 D1 D2 1 2 3 4 D1 D3 1 2 3 4 D1 D2 D3 X A B C 4 3 ...

Page 67: ...nd wires Do not twist the wire ends because this reduces the contact sur face area with the wire end sleeves 3 Wire end sleeves must be used with some wire cross sec tions see the following table Conductor cross section Use wire end sleeves 25mm2 Yes 25mm2 No 3 Nm 2 x 4 There are two connecting screws per conductor Always fasten all wires with both connecting screws ...

Page 68: ...6 Installation Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 68 1 2 1 2 2 3 3 3 D 4 3 4 5 6 5 4 7 4 Nm 5 4 7 4 Nm 5 4 7 4 Nm 5 Assemble the AC plug ...

Page 69: ...ing cap from the AC connection and store in a safe place 8 Plug the AC plug into the AC connection on the inverter and twist tight 9 Fasten the AC cable with a strain relief element 10 If the inverter is connected to a grid without a neutral conductor the AC connection must be changed using the display to 3P3W after commissioning see 8 4 9 AC con nection page 102 t ...

Page 70: ...tly on the solar modules Never disconnect the inverter from the solar modules when it is under load Turn the AC DC disconnector to the OFF position Disconnect the connection to the grid so that the inverter cannot supply energy to the grid Disconnect the inverter from all AC and DC voltage sources Ensure that none of the con nections can be restored accidentally Ensure that the DC cables cannot be...

Page 71: ...A_12s V1 EU EN 2017 03 09 6 Installation 3 Remove the sealing caps from the DC connections and store in a safe place Do not remove the sealing caps from the unused DC con nections 4 Plug the DC plugs with the DC cables into the DC connec tions on the inverter ...

Page 72: ...til it is located from both mains and on site generation supplies WARNING Dual supply Isolate on site Generation Unit s at ____________________________________ Isolate mains supply at _____________________________________________ Warning Only persons authorized by DNO may remove the main cut out fuse Warning Two voltage sources present Distribution network PV modules Prior to any work disconnect b...

Page 73: ...d C10 11 July 2012 Germany GERMANY LV Germany VDE AR N 4105 GERMANY MV Germany BDEW Austria AUSTRIA ÖNORM E8001 4 712 A1 04 2014 Switzerland SWITZERLAND Germany VDE AR N 4105 Yes No UK G59 3 230 set country Are you sure to 4 Check that the correct country or grid type is selected If the correct country is selected use the and buttons to select the Yes entry and the press the ENT button To change t...

Page 74: ...t If the correct inverter ID is selected use the and buttons to select the Yes entry and the press the ENT button Press the EXIT button to change the selection E Today 0kWh Power 0W Status On Grid 12 Jun 2016 15 32 þ þ The basic settings are now complete The standard menu is displayed Use the chapter 8 Settings page 75 to check whether you need to make additional settings ...

Page 75: ... 6 Dry contacts 98 8 4 7 RCMU Integrated residual current monitoring unit 100 8 4 8 EPO External power off 101 8 4 9 AC connection 102 8 4 10 Anti islanding 103 8 4 11 Max power maximum active power 104 8 4 12 Loading the factory settings 105 8 5 Active reactive power menu area 106 8 5 1 Power limit 106 8 5 2 Regulating the active power via the grid frequency 108 8 5 3 P V regulating the active po...

Page 76: ... ID 1 DSP 1 44 Red 1 24 Install S N xxxxxxxxxxxxx S N xxxxxxxxxxxxx The 13 character serial number of the inverter The serial number is also located on the type plate of the inverter This setting cannot be changed Install The installation date of the inverter This setting cannot be changed DSP 1 44 RED 1 24 COMM 1 29 The version numbers of the installed firmware This manual relates to the three fi...

Page 77: ...etting the operating behavior in the case of a grid voltage fail See 8 6 FRT Fault Ride Through page 122 for a detailed description and how to change the settings Sub item Active Pwr Settings P V Power vs Frequency Power Limit Power limit Function for power limiting See 8 5 1 Power limit page 106 for a detailed description and how to change the settings Power vs Frequency Function for regulating t...

Page 78: ...ge E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the General Settings entry and then press the ENT button Protocoll Baud rate Date...

Page 79: ...y 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the General Settings entry and then press the ENT button Protocoll Baud rate Date Time Lan...

Page 80: ...te Setting the Baud rate for RS485 E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the General Settings entry and then press the ENT...

Page 81: ...h Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the General Settings entry and then press the ENT button Protocoll Baud rate Date Time Language...

Page 82: ...8 Settings Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 82 8 3 5 Test menu See 11 2 Checking the fans page 136 for a description ...

Page 83: ...all Settings Inverter ID Setting the inverter ID E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the Install Settings entry and then...

Page 84: ...2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the Install Settings entry and then press the ENT button Password 0 energy production Adj would affect Warning 3 This function i...

Page 85: ...2017 03 09 8 Settings Resistance 1100 kΩ Mode ON 7 Use the and buttons to select the Resistance entry and then press the ENT button The currently set value is displayed after the entry 250kΩ 1100kΩ 150kΩ 8 Use the and buttons to select a value and then press the ENT button ...

Page 86: ...0 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the Install Settings entry and then press the ENT button Password 0 energy production Adj would affect Warning 3 Enter the...

Page 87: ...tomer service You can find the contact information on the back of this document This menu area is used to define the behavior of the inverter in the case of faults in the public grid The Grid Settings menu area has the following sub areas Voltage protection The behavior of the inverter in the case of grid overvoltage or undervoltage Frequency protection The behavior of the inverter in the case of ...

Page 88: ...lta customer service Overview To change this setting you need a special password provided by Delta customer service You can find the contact information on the back of this document This function allows you to defined the behavior of the inverter in the case of grid overvoltage or undervoltage 170 180 190 200 210 220 230 250 260 270 280 290 U High OFF Slow U High OFF U High ON U High ON Slow U Low...

Page 89: ...tion time for voltage low off slowly 0 600 s Menu item path Main Menu Install Settings Grid Settings Volt age Protection Changing the settings This procedure is the same for all parameters E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed...

Page 90: ...o select the Voltage Protection entry and then press the ENT button High On 259 0V High Off T 0 3s Low Off 104 0V High Off 276 0V 6 Use the and buttons to select a parameter and then press the ENT button The shape of the arrow changes the value can be changed The currently set value is displayed after the entry 7 Use the and buttons to configure the value and then press the ENT button ...

Page 91: ... the inverter in the case of grid overfrequency or underfrequency Setting options Parameter Description Setting range High Off Frequency high off 45 65 Hz High On Frequency high on 45 65 Hz High Off T Disconnection time for frequency high off 0 0 5 0 s Low Off Frequency low off 45 65 Hz Low On Frequency low on 45 65 Hz Low Off T Disconnection time for frequency low off 0 5 0 s Hi Off Slow Frequenc...

Page 92: ...ffect Warning 3 Enter the password provided by Delta customer service Use the and buttons to set the individual numerals Press the ENT button to confirm a number Grid Settings Country Insulation Inverter ID 001 4 Use the and buttons to select the Grid Settings entry and then press the ENT button Freq Protection Reconnect T 600s P Ramp up 6000 m Voltage Protection 5 Use the and buttons to select th...

Page 93: ...s Menu item path Main Menu Install Settings Grid Settings Re connect T Setting the reconnection time E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and b...

Page 94: ...8 Settings Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 94 6 Use the and buttons to configure the value and then press the ENT button ...

Page 95: ...atus On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the Install Settings entry and then press the ENT button Password 0 energy production Adj would affect Warni...

Page 96: ...specified time to see if the DC current drops below the switch off value again When this time has expired the inverter switches off 0 0 5 0 s Menu item path Main Menu Install Settings DC Injection Calling up the menu item E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly...

Page 97: ...The currently set mode is displayed after the entry 6 Use the and buttons to select a mode and then press the ENT button Changing the settings This procedure is the same for all parameters Trip Value 1 00A Trip Time 0 2s Mode ON 7 Use the and buttons to select a parameter and then press the ENT button The shape of the arrow changes the value can be changed The currently set value is displayed afte...

Page 98: ...age or warning has been sent Error An error event message has been sent Fault A fault message has been sent Warning A warning message has been sent Menu item path Main Menu Install Settings Dry Cont Assigning events to the dry contacts E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT but...

Page 99: ...0A_12s V1 EU EN 2017 03 09 8 Settings Dry Cont B Disable Dry Cont A Disable 5 Use the buttons and to select a dry contact and then press the ENT button On Grid Fan Fail Insulation Disable 6 Use the and buttons to select an event and then press the ENT button ...

Page 100: ...he integrated residual current monitoring unit E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the Install Settings entry and then p...

Page 101: ...in menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the Install Settings entry and then press the ENT button Password 0 energy production Adj would affect Warning 3 This function is protected with password 5555 Use the and buttons to set the individual numerals Pr...

Page 102: ...atus On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the Install Settings entry and then press the ENT button Password 0 energy production Adj would affect Warni...

Page 103: ...slanding E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the Install Settings entry and then press the ENT button Password 0 energy ...

Page 104: ...us On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the Install Settings entry and then press the ENT button Password 0 energy production Adj would affect Warning...

Page 105: ...oday 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the Install Settings entry and then press the ENT button Password 0 energy production A...

Page 106: ... Example Maximum power 45 000 W Power limit 90 Maximum active power max power x power limit Maximum active power 45 000 W x 90 40 500 W Setting options Parameter Description Setting range Mode Switch the function on and off ON OFF Define point Additional active power limitation 0 100 Menu item path Main Menu Active Reactive Pwr Active Power Ctrl Power Limit Calling up the menu item E Today 0kWh Po...

Page 107: ...00 Mode ON 6 Use the and buttons to select the Mode entry and then press the ENT button The shape of the arrow changes the value can be changed The currently set mode is displayed after the entry 7 Use the and buttons to select a mode and then press the EXIT button Changing the settings Set Point 100 Mode ON 8 Use the and buttons to select a parameter and then press the ENT button The shape of the...

Page 108: ... to the gradient as long as the grid frequency lies between fstart and fstop The active power feed is stopped when the grid frequency exceeds fstop feeding remains stopped until the grid frequency falls below fstart again Feeding is resumed at the stored instantaneous value when the grid frequency falls below fstart again When the grid frequency exceeds fstart the instantaneous value of the active...

Page 109: ...ain Menu Active Reactive Pwr Active Power Ctrl Power vs Frequency Calling up the menu item E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to ...

Page 110: ...ges the value can be changed The currently set mode is displayed after the entry 7 Use the and buttons to select a mode and presse the ENT button Changing the settings F Recovery 50 20Hz Gradient 100 F Start 50 20Hz Mode ON 8 Use the and buttons to select a parameter and then press the ENT button The shape of the arrow changes the parameter can be changed The currently set value is displayed after...

Page 111: ...m path Main Menu Active Reactive Pwr Active Power Ctrl P V Calling up the menu item E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select ...

Page 112: ...value can be changed The currently set mode is displayed after the entry 7 Use the and buttons to select a mode and then press the ENT button Changing the settings P lock out 5 V lock in 253 0V P lock in 20 Modus EIN 8 Use the and buttons to select a parameter and then press the ENT button The shape of the arrow changes the parameter can be changed The currently set value is displayed after the en...

Page 113: ...nt cosphi Calling up the menu item E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the Active Reactive Pwr entry and then press the ...

Page 114: ...value can be changed The currently set mode is displayed after the entry 7 Use the and buttons to select a mode and then press the ENT button Changing the settings Cos phi Ind 1 00 Mode ON 8 Use the and buttons to select a parameter and then press the ENT button The shape of the arrow changes the parameter can be changed The currently set value is displayed after the entry 9 Use the and buttons to...

Page 115: ...r limit Upper limit Setting options Parameter Description Setting range Mode Switch the function on and off ON OFF Q upper The upper limit of cos phi cos φ 0 80 0 99 cap 1 0 80 0 99 ind P lower The lower limit of the active power 0 100 Q lower The lower limit of cos phi cos φ 0 80 0 99 cap 1 0 80 0 99 ind P upper The upper limit of the active power 0 100 V lock in 230 0 253 0 V V lock out 207 0 23...

Page 116: ...Q V Constant Q Cos phi P Constant cos phi 5 Use the and buttons to select the Cos phi P entry and then press the ENT button Setting the mode Q lower Ind 1 00 P lower 45 Q upper Ind 1 00 Mode ON 6 Use the and buttons to select the Mode entry and then press the ENT button The shape of the arrow changes the value can be changed The currently set mode is displayed after the entry 7 Use the and buttons...

Page 117: ...active Power Ctrl Constant Q Calling up the menu item E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info General Settings Install Settings Active Reactive Pwr FRT 2 Use the and buttons to select the Active Reactive Pwr entry ...

Page 118: ...value can be changed The currently set mode is displayed after the entry 7 Use the and buttons to select a mode and then press the ENT button Changing the settings Fix Q Ind 90 Mode ON 8 Use the and buttons to select a parameter and then press the ENT button The shape of the arrow changes the parameter can be changed The currently set value is displayed after the entry 9 Use the and buttons to con...

Page 119: ...ter waits for the time specified here to see if the grid voltage falls below V1s again before feeding capacitive reactive power When the grid voltage increases again the inductive reactive power is increased according to the ramp specified by the char acteristic curve When the grid voltage exceeds the upper voltage limit V2s the inductive reactive power remains at the level specified in Qs Limit C...

Page 120: ...ch the function is active The value is set as a percentage of the nominal active power Cannot be changed Lock out power The lower limit of the active power range in which the function is active The value is set as a percentage of the nominal active power Cannot be changed Menu item path Main Menu Active Reactive Pwr Reactive Power Ctrl Q V Calling up the menu item E Today 0kWh Power 0W Status On G...

Page 121: ...value can be changed The currently set mode is displayed after the entry 7 Use the and buttons to select a mode and then press the ENT button Changing the settings Qs limit Ind 44 V2s 253 0V V1s 248 4V Mode OFF 8 Use the and buttons to select a parameter and then press the ENT button The shape of the arrow changes the parameter can be changed The currently set value is displayed after the entry 9 ...

Page 122: ...n the back of this document This function allows you to defined the behavior of the inverter in the case of short term grid voltage dropouts Menu item path Main menu Settings FRT Setting options Vdrop U1 Umin 100 t0 t1 t3 Time Stay connected to the grid Disconnect from grid Ugrid Un t0 The time at which a voltage collapse begins Parameter Description Setting range Mode Switch the function on and o...

Page 123: ...nction is protected with password 5555 Use the and buttons to set the individual numerals Press the ENT button to confirm a number Setting the mode t1 0 30s Vdrop 0 Dead band 10 Mode ON 4 Use the and buttons to select the Mode entry and then press the ENT button The shape of the arrow changes the value can be changed The currently set mode is displayed after the entry 5 Use the and buttons to sele...

Page 124: ...th Main menu Meter Displaying measurements E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info Event Log Energy Log Meter 2 Use the and buttons to select the Meter entry and then press the ENT button 3 Use the and buttons to p...

Page 125: ...on repeatedly until the main menu is displayed Inverter Info Event Log Energy Log Meter 2 Use the and buttons to select the Energy Log entry and then press the ENT button Month Energy Day Energy Life Energy 3 Use the and buttons to page through the menu Press the ENT button to open a submenu Press the EXIT button to cancel Life Energy Runtime 0hrs E total 0kWh Life Energy E Total The energy genera...

Page 126: ...the Event Log entry and then press the ENT button Grid Report Error Events 3 Use the and buttons to select the Error Events entry and then press the ENT button AC Volt Low 2 22 02 2016 08 20 AC Freq High 1 23 02 2016 17 20 4 Use the and buttons to page through the menu Press the EXIT button to cancel Deleting error events The grid report is also deleted together with the error events E Today 0kWh ...

Page 127: ...d Menu item path Main Menu Event Log Grid Report Displaying the grid report E Today 0kWh Power 0W Status On Grid 10 Sep 2014 15 32 1 If the default information is displayed press any button to open the main menu Otherwise press the EXIT button repeatedly until the main menu is displayed Inverter Info Event Log Energy Log Meter 2 Use the and buttons to select the Event Log entry and then press the ...

Page 128: ... Log Meter 2 Use the and buttons to select the Event Log entry and then press the ENT button Grid Report Error Events 3 Use the and buttons to select the Grid Report entry and then press the ENT button The list of error events is displayed AC Volt Low 2 22 02 2016 08 20 AC Freq High 1 23 02 2016 17 20 4 Press and hold the and ENT buttons simultaneously for at least 5 seconds A confirmation prompt ...

Page 129: ...on the solar modules they immediately start to generate electricity This also happens when light does not fall directly on the solar modules Never disconnect the inverter from the solar modules when it is under load Turn the AC DC disconnector to the OFF position Disconnect the connection to the grid so that the inverter cannot supply energy to the grid Disconnect the inverter from all AC and DC v...

Page 130: ...rrect country or grid type setting Check the country and grid type settings Incorrectly wired AC plug Check the wiring of the AC plug E07 Grid Quality Grid Quality Non linear load in the grid and in the vicinity of the inverter If necessary the grid connection must be far away from a non linear load E08 HW Connect Fail HW Connect Fail Incorrectly wired AC plug Check the wiring of the AC plug E34 I...

Page 131: ...C2 is less than the minimum permissible DC input voltage Check the DC input voltage at DC2 on the inverter display There may be insufficient solar irradiation W11 HW Fan HW Fan One or more fans are blocked Remove all objects that might be blocking the fans One or more fans are defective Replace the fans One or more fans are disconnected Check the connections for all fans SPD Fail SPD Fail The inve...

Page 132: ... HW Bus OVR HW Bus OVR The DC input voltage is greater than the maxi mum permissible DC input voltage Change the solar system setting so that the DC input voltage at DC1 lies below the maximum permissible DC input voltage Overvoltage during operation Contact Delta Customer Service Internal error Contact Delta Customer Service F23 HW COMM1 HW COMM1 Internal error Contact Delta Customer Service F22 ...

Page 133: ...n the inverter dis play There may be insufficient solar irradiation Internal error Contact Delta Customer Service F50 HW ZC Fail HW ZC Fail Internal error Contact Delta Customer Service F27 RCMU Fail RCMU Fail Internal error Contact Delta Customer Service F13 F29 Relay Open Relay Open Internal error Contact Delta Customer Service F28 Relay Short Relay Short Internal error Contact Delta Customer Se...

Page 134: ...o generate electricity This also happens when light does not fall directly on the solar modules Never disconnect the inverter from the solar modules when it is under load Turn the AC DC disconnector to the OFF position Disconnect the connection to the grid so that the inverter cannot supply energy to the grid Disconnect the inverter from all AC and DC voltage sources Ensure that none of the con ne...

Page 135: ...e 11 1 Periodic maintenance Perform the following checks every 6 months Check the string fuses Measure the current using a current transformer Check the fans for soiling and clean if necessary Test the fans see 11 2 Checking the fans page 136 Check the air inlets for soiling and clean if necessary ...

Page 136: ...ry and then press the ENT but ton Fan Test Result Fan Test OFF 5 Use the and buttons to select the Fan Test entry again and then press the ENT button Fan Test Result Fan Test ON 6 To start the fan test use the and buttons to set the Fan Test entry to ON and then press the ENT button The fan test starts after approx 5 seconds The fans audibly accelerate to maximum speed The fans have reached maximu...

Page 137: ...peration Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 11 Maintenance The list shows the fans that are defective Empty Failed Fan Result when no fans are defective Ext Fan 1 Failed Fan Result when one fan is defective ...

Page 138: ...s can be accidentally restored 3 Wait for at least 10 seconds until the internal capacitors have discharged NOTICE After unscrewing the fan block the entire weight of the fan block hangs on the fan power supply cables You should therefore hold the fan block with one hand when unscrewing NOTICE Do not use any sharp pointed or hard objects for cleaning Do not use liquids for cleaning 1 Turn the AC D...

Page 139: ...s V1 EU EN 2017 03 09 11 Maintenance 5 Unscrew and unplug the AC plug 6 Use the mounting tool to release the DC plugs and then pull them out 7 Wait for at least 10 seconds until the internal capacitors have discharged 8 Unscrew and carefully pull out the fan block ...

Page 140: ...11 Maintenance Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 140 9 Pull the plugs of the power supply cable out of the fan con nectors 1 2 ...

Page 141: ...peration Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 11 Maintenance 10 Clean the fans with a compressed air cleaner or a stiff paintbrush 11 Insert the plugs of the power supply cable into the fan con nectors CLICK ...

Page 142: ...11 Maintenance Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 142 12 Insert the fan block and screw in place ...

Page 143: ...nstallation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 11 Maintenance 13 Plug in the DC plugs 14 Plug in the AC plug and screw tight 15 Turn the AC DC disconnector to the ON position ...

Page 144: ...nual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 144 11 4 Cleaning the air inlets The screws on the filter housing are very small and can easily fall down You should therefore use a magnetic screwdriver 1 Unscrew and remove the air inlet covers ...

Page 145: ...tallation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 11 Maintenance 2 Clean the filters with a compressed air cleaner or a stiff paintbrush 3 Fit the air inlet covers and screw in place ...

Page 146: ... Disconnect the inverter from all AC and DC voltage sources and make sure that none of the connections can be accidentally restored 3 Wait for at least 10 seconds until the internal capacitors have discharged The surge protection devices are replaced as a block You can obtain spare parts from Delta Customer Service The contact information is provided on the last page of this document You should us...

Page 147: ...Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 11 Maintenance 3 Use the mounting tool to release the DC plugs and then pull them out 4 Unscrew and remove the fuse box cover ...

Page 148: ...Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 148 5 Pull out both power cable plugs 1 2 6 Pull out the communication cable plug 7 Unscrew the 6 screws and lift out the block with the defective surge protection devices ...

Page 149: ...on and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 11 Maintenance 8 Fit the new block with the surge protection devices and screw in place using the 6 screws 9 Plug in the communication cable plug ...

Page 150: ...or Inverter RPI M50A_12s V1 EU EN 2017 03 09 150 10 Plug in both power cable plugs CLICK The fuse box cover must sit correctly and prop erly seal the fuse box in order to ensure an IP65 degree of protection 11 Fit the fuse box cover and screw in place ...

Page 151: ...nstallation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 11 Maintenance 12 Plug in the DC plugs 13 Plug in the AC plug and screw tight 14 Turn the AC DC disconnector to the ON position ...

Page 152: ...e string fuses specified in the table Delta reserves the right to invalidate all warranty claims if other string fuses are used and this results in problems with the inverter or the instal lation 1 Turn the AC DC disconnector to the OFF position 2 Unscrew and unplug the AC plug 3 Use the mounting tool to release the DC plugs and then pull them out ...

Page 153: ...for Inverter RPI M50A_12s V1 EU EN 2017 03 09 11 Maintenance 4 Unscrew and remove the fuse box cover 5 Localize the defective string fuse using a current transformer 6 Pull out the fuse holder of the defective string fuse using your fingers ...

Page 154: ...09 154 7 Replace the defective string fuse with a new string fuse 8 Insert the fuse holder of the new string fuse using your fingers The fuse box cover must sit correctly and prop erly seal the fuse box in order to ensure an IP65 degree of protection 9 Fit the fuse box cover and screw in place ...

Page 155: ...nstallation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 11 Maintenance 10 Plug in the DC plugs 11 Plug in the AC plug and screw tight 12 Turn the AC DC disconnector to the ON position ...

Page 156: ...the internal capacitors have discharged DANGER Electrical shock Potentially fatal voltage is present at the invert er s DC connections When light falls on the solar modules they immediately start to generate electricity This also happens when light does not fall directly on the solar modules Never disconnect the inverter from the solar modules when it is under load Turn the AC DC disconnector to t...

Page 157: ...sconnector to the OFF position 2 Disconnect the connection between the inverter and the solar modules DC 3 Disconnect the connection between the inverter and the grid AC 4 Use a voltmeter to check that the AC and DC connections are free of voltage 5 Fit the sealing cap on the AC connection 6 Unscrew and unplug the AC plug ...

Page 158: ...ssioning Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 158 7 Use the mounting tool to release the DC plugs and then pull them out 8 Seal the DC connections using the sealing caps ...

Page 159: ...nverter RPI M50A_12s V1 EU EN 2017 03 09 12 Decommissioning 9 Unscrew the cable gland of the communication connection and remove the cable gland and seal 10 Unscrew and carefully pull out the cover The communica tion card is screwed to the cover ...

Page 160: ...ning Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 160 11 Remove the cable and re insert the cover with the commu nications card and screw tight 12 Insert the rubber plug in the seal ...

Page 161: ...Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 12 Decommissioning 13 Fit the seal and cable gland and screw the cable gland tight 14 Unscrew the grounding cable 15 Refit the grounding screw spring washer washer and lock washer ...

Page 162: ...missioning Installation and Operation Manual for Inverter RPI M50A_12s V1 EU EN 2017 03 09 162 16 Unscrew the inverter from the wall or mounting system at both sides 17 Lift the inverter off the mounting plate ...

Page 163: ...ox The following steps are only necessary when your wish to completely decommission and store the inverter 19 Pack all parts originally included in delivery see 4 1 Scope of delivery page 11 in the original box for storing the inverter 20 Adhere to the specified environmental conditions when storing the inverter see 13 Technical data page 164 ...

Page 164: ...100 A 50 A 50 A Maximum short circuit power upon fault 72 A 12 A per string Number of MPP trackers Parallel inputs 1 MPP tracker separate inputs 2 MPP tracker Number of DC inputs total DC1 DC2 12 6 6 Electrical isolation No Overvoltage category 3 III String fuses 15 A 4 Surge protection devices Type 2 replaceable Output AC RPI M50A_12s Maximum apparent power 5 55 kVA6 Rated apparent power 5 50 kVA...

Page 165: ...dards and guidelines RPI M50A_12s Safety class as per IEC 60529 IP65 Safety class as per IEC 61140 I Soiling class as per IEC 60664 1 II Overload behavior Current limiting power limiting Safety IEC 62109 1 2 CE compliance EMC EN 61000 6 2 EN 61000 6 3 Fault free operation IEC 61000 4 2 3 4 5 6 8 Harmonic distortion EN 61000 3 2 Fluctuations and fibrillations EN 61000 3 3 Grid connection guidelines...

Page 166: ...800 800 9323 toll free Greece support greece solar inverter com 49 7641 455 549 Great Britain support uk solar inverter com 0800 051 4281 toll free Israel supporto israel solar inverter com 800 787 920 toll free Italy supporto italia solar inverter com 800 787 920 toll free Netherlands ondersteuning nederland solar inverter com 0800 022 1104 toll free Poland serwis polska solar inverter com 48 22 ...

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