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Device communication via the BMS bus

10. Device communication via the BMS bus

10.1 RS-485 interface with BMS protocol

The RS-485 interface, galvanically isolated from the device electronics, serves as a physi-
cal transmission medium for the BMS protocol. When an ISOMETER® or other bus-capable
devices are interconnected via the BMS bus in a network, the BMS bus must be terminat-
ed at both ends with a 120 Ω resistor. For this purpose, the device is equipped with the
terminating switch RS-485 Term. (ON/OFF).

An RS-485 network that is not terminated is likely to become unstable and may result in
malfunctions. Only the first and last device in one line may be terminated. Hence, stub
feeders in the network must not be terminated. The length of the stub feeders is restrict-
ed to 1 meter.

10. 2 Topology RS-485 network

maximum length of the RS-485 network: 1200 m

1. device

… device

last device

stub feeder
max. 1 m

The optimum topology for an RS-485 network is a daisy-chain connection. In this connec-
tion, device 1 is connected to device 2, device 2 to device 3, device 3 to device n etc. The
RS-485 network represents a continuous path without branches.

Correct arrangement

Three examples for correct arrangement:

Wrong arrangement

Three examples for wrong arrangement:

A1 A2

E KE

21 22 24

31 32 34

k l kT IT

A B S

RS-485

Term.

off on

CAN 1

CAN 2

I2+ I2- I1+ I1-

K3

K2

11 12 14

K1

I2+ I2- I1+ I1-

A B S

k I kT IT

31 32 34

21 22 24

11 12 14

E KE

A1 A2

A B S

RS-485

Term.

off on

CAN 2

A B S

A B S

CAN 2

A B S

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Содержание ISOMETER iso1685DP

Страница 1: ...ual Insulation monitoring device for unearthed AC AC DC and DC power supplies IT systems up to AC 1000 V DC 1500 V Software version D484 V2 xx D485 V1 xx ISOMETER iso1685DP iso1685DP_D00272_02_M_XXEN 07 2017 ...

Страница 2: ...07 259 E Mail info bender de Web www bender de Bender GmbH Co KG All rights reserved Reproduction only with permission of the publisher Subject to change Customer service Service Hotline 0700 BenderHelp Telephone and Fax Carl Benz Straße 8 35305 Grünberg Germany Tel 49 6401 807 760 Fax 49 6401 807 629 E Mail info bender service com ...

Страница 3: ...self test 16 3 5 3 Manual self test 16 4 Device overview 17 4 1 Dimensions 17 4 2 Connections 18 4 3 Display and operating elements 19 4 3 1 Display elements 19 4 3 2 Device buttons 19 4 3 3 Operating elements in the service lid 19 5 Installation and connection 20 5 1 Installation 20 5 2 Connection 20 5 2 1 Connection requirements 20 5 2 2 Step by step connection of the ISOMETER 21 5 2 3 Connectin...

Страница 4: ...de 34 9 1 1 6 1 2 t on 34 9 1 1 6 1 3 t off 34 9 1 1 6 1 4 Function 35 9 1 1 6 2 Digital 2 35 9 1 1 7 Outputs 35 9 1 1 7 1 Relay 1 35 9 1 1 7 1 1 TEST 35 9 1 1 7 1 2 Operating mode 35 9 1 1 7 2 Relay 2 35 9 1 1 7 3 Buzzer 35 9 1 1 7 3 1 TEST 35 9 1 1 7 3 2 Function 1 36 9 1 1 7 3 3 Function 2 36 9 1 2 0 EDS insulation fault location 36 9 1 2 1 Mode 36 9 1 2 2 Current 37 9 1 3 0 Data measured value...

Страница 5: ... 43 10 7 4 Error codes 44 11 Insulation fault location 45 11 1 General description 45 11 2 Required settings for insulation fault location 45 11 3 Indication on the display 45 11 4 Starting and stopping the insulation fault location 45 12 Device profiles 46 13 Alarm messages 47 14 Diagrams 48 14 1 Response time profile Power circuits 48 14 2 Response time profile High capacitance 49 14 3 Response ...

Страница 6: ...e user in making optimum use of the product DANGER WARNING CAUTION 1 2 Technical support For commissioning and troubleshooting Bender offers you 1 2 1 First level support Technical support by phone or e mail for all Bender products Questions concerning specific customer applications Commissioning Troubleshooting Telephone 49 6401 807 760 Fax 49 6401 807 259 In Germany only 0700BenderHelp Tel and F...

Страница 7: ...trical industry set out by the ZVEI Zentralverband Elektrotechnik und Elektronikindustrie e V German Electrical and Electronic Manufacturer s Association also applies Sale and delivery conditions can be obtained from Bender in printed or electronic format 1 5 Storage The devices must only be stored in areas where they are protected from dust damp and spray and dripping water and in which the speci...

Страница 8: ...ing current for these systems In case of doubt please contact our service department DANGER DANGER Risk of electric shock When opening the device you may come into contact with live parts Switch off the mains voltage before opening the device Make sure that the basic settings meet the requirements of the IT system Persons without the required expertise in particular children must not have access t...

Страница 9: ...ters 2 20 kHz Risk of bus errors Double assignment of addresses on the respective BMS busses can cause serious malfunctions CAUTION 2 5 Intended use The device is used for monitoring the insulation resistance in large power supply systems designed as IT systems The specific measurement technique AMP monitors the insu lation resistance also in installations where extremely high system leakage capac...

Страница 10: ...istance of an IT system during operation and triggers an alarm when the value falls below a preset response value To obtain a measurement the device has to be connected between the IT system unearthed system and the protective earth con ductor PE A measuring current in the μA range is superimposed onto the system which is recorded and evaluated by a microcontrolled measuring circuit The measuring ...

Страница 11: ...the insulation fault location after the value has fallen below the response values Ran1 and Ran2 When starting the insulation fault location the LED PGH on signals the locating current pulse When permanently installed insulation fault locators with master capability such as EDS460 D or EDS490 D are used control and synchronisation of the locating current in jector is carried out via the BMS master...

Страница 12: ...ors are stored in the internal history memory with date and time stamp The time the event started the time of acknowledgement and the end of the event are recorded The history memory can be called up and reset via the device menu see History on page 37 3 5 Self test 3 5 1 Self test after connection to the supply voltage Once connected to the supply voltage all internal measurement functions the co...

Страница 13: ...ly run at 24 hour intervals During the automatic self test the alarm relays K1 11 12 14 and K2 21 22 24 are not switched K3 won t be switched either 3 5 3 Manual self test The self test is started via the Test button of the ISOMETER The following tests are only carried out in the manual self test mode Internal Flash CPU register Watchdogs Oscillator Restart of the device including re initialisatio...

Страница 14: ...5DP_D00272_02_M_XXEN 07 2017 17 4 Device overview 4 1 Dimensions ISOMETER iso1685 PGHON 246 mm 125 mm 40 5 mm 40 75 mm 51 mm 368 mm 383 mm 401 5 mm 106 mm 64 mm 8 75 mm 5 2 mm 61 8 mm 76 6 mm 39 8 mm 55 7 mm ...

Страница 15: ... B protocol BMS S PE potential Connect one end of shield K I kT IT No function 31 32 34 Relay output for internal device errors SERVICE LED 21 22 24 Relayoutputforalarm insulation fault 11 12 14 Relay output for alarm insulation fault E KE SeparateconnectionofE earth and KE reference to PE Connect both to PE A1 A2 Supply voltage Us DC 24 V Arbitrary polarity Connection via fuses 6 A each L2 L L2 L...

Страница 16: ...fault 2 alarm The ALARM 2 LED lights continuously when the insulation resistance falls below the response value 2 RF Ran2 Flashes Connection fault check earth and system L1 L2 PGHON 1 2 3 4 5 4 3 2 Device buttons You can adjust the device settings in the respective menu using the menu buttons De pending on the menu entry one of the options displayed below is assigned to the but tons 4 3 3 Operatin...

Страница 17: ... property damage due to unprofessional installation If more than one insulation monitoring device is connected to a conduc tively connected system the system can be damaged If several devices are connected the device does not function and does not signal insula tion faults Make sure that only one insulation monitoring device is con nected in each conductively connected system DANGER WARNING CAUTIO...

Страница 18: ...sL1 andL2 arelocked Tounplugtheterminals the orange sliders must be slid towards the front towards the device to unlock the terminal Now the terminal can be unplugged 5 2 3 Connecting the EDS to the ISOMETER Risk of malfunctions due to excessive locating current on sensitive system parts The locating current flowing between the IT system and earth can cause controller faults in sensitive parts of ...

Страница 19: ... connection iso1685DP_D00272_02_M_XXEN 07 2017 22 5 3 Connection to an AC system ISOMETER iso1685 L1 L2 US 6A 313234 111214 212224 6A PE 1A 1A BMS Master 2 PE k I kT IT I2 I2 I1 I1 A1 A2 E KE L2 L1 A B S K1 K3 K2 PGHON ...

Страница 20: ...AN EDS440 I L 7 6 5 3 8 4 2 0 1 6 5 3 4 2 0 1 9 8 EDS440 ISOSCAN TEST MUTE RESET ALARM ALARM ON COM SERVICE CHANNELS SLAVE ADDRESS 12 11 10 9 8 7 1 2 3 4 5 6 9 7 l l A1 A2 I L I n I L I n to the loads to the loads L1 L2 L3 N PE US Un 6A to COM465 or CP700 for parameter setting ISOMETER iso1685 US 6A 6A 1A 1A k I kT IT I2 I2 I1 I1 A1 A2 E KE L2 L1 A B S PGHON K1 K3 K2 313234 111214 212224 ...

Страница 21: ... an AC system BMS Bus EDS46 D to the loads to the loads L1 L2 PE US Un 6A to COM465 or CP700 for parameter setting ISOMETER iso1685 US 6A 6A 1A 1A k I kT IT I2 I2 I1 I1 A1 A2 E KE L2 L1 A B S 313234 111214 212224 SET EDS46 L SLAVE ADDRESS ERROR CODE TEST RESET 2 1 ALARM ON 1 2 3 4 5 6 7 8 9 10 11 12 ESC I s MONITOR A B A1 A2 k1 I k2 PGHON K1 K3 K2 ...

Страница 22: ...e iso1685DP Make sure that the system is disconnected from any electrical source before connecting the device Adress all BMS components Set adress 1 for the 1685DP Master Connect supply voltage Connect system voltage iso1685DP successfully carries out a self test Function test with a suitable resistance between system and earth Value 50 of the response value Ran2 Alarm LEDs activated Alarm relays ...

Страница 23: ...ing 6 6 Please set the current date and time 2 9 6 3 3 Setting the profile In order to optimally adapt the insulation monitoring device to the system to be moni tored select a profile here that suits your system For an overview of the profiles refer to Device profiles auf Seite 46 The profile Power circuits is suitable for most IT systems 6 3 4 Setting response value Ran1 for Alarm 1 You can set t...

Страница 24: ...y auto o 1cycle 6 6 8 lle Commissioning 6 6 Please set the required EDS current 8 9 6 3 8 TEST Set the mode for the insulation fault location to manual automatic or 1 cycle For further information refer to Mode auf Seite 36 6 4 Recommissioning If the device has already been put into operation before the self test will be started short ly after the supply voltage has been connected You can restart ...

Страница 25: ...he different modes refer to Mode auf Seite 36 2 Test if the maximum locating current to the EDS is correct and adjust if necessary refer to 6 3 7 Set the EDS current auf Seite 27 Menu path Menu EDS Current In addition to this chapter commissioning of the ISOMETER in combination with an EDS is described in the Commissioning flow chart insulation fault location auf Seite 25 lle Mode o off o manually...

Страница 26: ...een the test pulses IT system OK 230 kΩ R an 40kΩ 10kΩ OK 230 kΩ EDS off PGHON 7 2 Fault indication active An active fault is displayed by The upper part of the display becomes orange and displays the fault message Depending on the type of fault the LEDs ALARM 1 ALARM 2 or SERVICE are activated In the example below the insulation resistance is still 7 kΩ Since the values Ran1 40 kΩ and Ran2 10 kΩ ...

Страница 27: ... value you can see when the fault has occurred and for how long it has been active 230 kΩ IT system 3x 1 4 230 kΩ EDS off PGHON 7 kΩ Insulation fault 28 08 16 17 02 28 08 16 17 18 2 4 7 kΩ PGHON 7 4 Acknowledging a fault message In order to acknowledge the fault message and return to the ISOMETER s standard dis play all faults must be acknowledged by means of the reset button This means that fault...

Страница 28: ...cale Change parameter value Current time scale Leave view Modify scale PGHON History 5 1 Insulation fault 11kΩ 28 03 14 17 02 28 03 14 17 18 8 8 Number of selected erro Total number of error messages Next message Previousmessage Leave view Fault description Alarm value Fault occured Fault disappeared PGHON 7 7 Insulation fault location When the EDS mode is activated the ISOMETER indicates the mess...

Страница 29: ...rmat Date 3 Interface 1 BMS 1 BMS Adress 4 Display 1 Brightness 5 Password 1 Password 2 Status 6 C i i i 8 2 Operation and Navigation Navigate through the device menu using the device buttons The functions of the device buttons are described in the chapter Device buttons auf Seite 19 Navigation in lists To make a selection in a list navigate using the and buttons to the re quired menu item Then cl...

Страница 30: ...1 1 2 Alarm 2 An insulation resistance of 0 2 kΩ 2 MΩ can be set for alarm 2 t R Ran1 Ran2 Alarm 1 aktive Alarm 2 aktive hysteresis Alarm 1 inaktive hysteresis Alarm 2 inaktive 9 1 1 2 Profile Adapt the area of application of the ISOMETER to your system profile For a description of the profiles refer to Device profiles auf Seite 46 The following can be selected 9 1 1 3 Fault memory Automatic reset...

Страница 31: ...red system disconnection The IT system is NOT being monitored The message Device inactive appears on the display The ALARM1 and ALARM2 LEDs are lit on Coupling monitoring is activated off Coupling monitoring is deactivated Active high An event is carried out on the rising edge of the digital input low to high Response time t on t off after a switch on sig nal I1 I2 I1 I2 24 V 9 1 1 6 1 2 t on The ...

Страница 32: ...n internal system isolat ing switch Insulation fault location The insulation fault location is started For this purpose the digital input must be active on The manual test checks the switching function of the relay off The manual test does not check the switching function of the relay 9 1 1 7 1 2 Operating mode The relay mode can be adapted to the application 9 1 1 7 2 Relay 2 Refer to 9 1 1 7 1 R...

Страница 33: ... for insulation fault location off The insulation fault location is deactivated Manual In manual mode the insulation fault location starts immediately If you start the insulation fault location it remains active without con sidering the insulation resistance and the alarm message of the ISO METER auto In auto mode the insulation fault location starts automatically as soon as the response value of ...

Страница 34: ... measured values for a specific period of time You can view these data at the Data meas values menu item Navigate through the different views using the and buttons 9 1 4 0 Control In the Control menu you can run a manual test and reset the alarm messages 9 1 5 0 History In the history menu the faults detected by the ISOMETER are displayed For a detailed description refer to History memory auf Seit...

Страница 35: ...rmat to be displayed off No automatic change between summer time and standard time DST Daylight Saving Time Automatic change between summer and standard time according to North American regulation North American summer time begins on each second Sunday in March at 02 00 local time by setting the clock forward by one hour from 2 00 to 03 00 local time Summer time always ends the first Sunday in Oct...

Страница 36: ... password function to protect the device parameters against unauthorised adjust ment The default password is 0000 9 1 6 5 1 Password Enter an individual four digit password 9 1 6 5 2 Status Decide whether the password query should be used on Password query active off Password query inactive 9 1 6 6 Commissioning In the commissioning menu you can open the ISOMETER s commissioning wizard again 9 1 6...

Страница 37: ...ting mode N C operation Function Insulation measurement Relay 3 31 32 34 Operating mode N C operation Function Device error Parameter Value Status EDS mode auto PGH current 25 mA BMS Digital inputs Other Parameter Value Status BMS address 2 BMS termination ON Parameter Value Status Digital input 1 Mode operating mode active high Function Test Digital input 2 Mode operating mode active high Functio...

Страница 38: ...t and last device in one line may be terminated Hence stub feeders in the network must not be terminated The length of the stub feeders is restrict ed to 1 meter 10 2Topology RS 485 network maximum length of the RS 485 network 1200 m 1 device device last device stub feeder max 1 m The optimum topology for an RS 485 network is a daisy chain connection In this connec tion device 1 is connected to de...

Страница 39: ...S bus for alarm and op erating messages If the master detects incorrect answers from a slave the fault message Fault RS 485 will be output via the BMS bus DI1 1 32 33 64 Fault causes may be Addresses are assigned twice A second master exists on the BMS bus Interference signals occur on the bus lines A defective device is connected to the bus Terminating resistors are not activated or connected 10 ...

Страница 40: ...vertemperature of the locating current injector 10 7 2 Operating messages 10 7 3 Resetting error messages Recorded errors are provided as alarm messages on the BMS bus The fault messages are reset via the device menu If the error continues to exist the mes sage will be generated again The error can also be reset by means of the acknowledge ment command via the BMS bus Message Channel Description I...

Страница 41: ...ware Supply voltage 12 V Replace device 8 45 Hardware Supply voltage 5 V Replace device 8 46 Hardware Supply voltage 3 3 V Replace device 9 61 Parameters Insulation measurement Load factory settings and set parameters again 9 63 Parameters Locating current injector Load factory settings and set parameters again 9 64 Parameters Voltage measurement Contact service 9 70 System General software error ...

Страница 42: ...nsulation fault location auf Seite 25 and to the corresponding manual of the EDS Setting locating current and EDS mode These settings can be made either during initial commissioning see 6 3 Initial commissioning ab Seite 26 or in the device menu of the ISOMETER see 9 1 2 0 EDS insulation fault location ab Seite 36 For further information regarding the locating current for insulation fault location...

Страница 43: ... profile Inverter 10 Hz AC 0 1000 V DC 0 1500 V DC 10 460 Hz 0 150 μF 50 V This profile is used for systems with dynamic frequency control by inverters in the range 10 to 460 Hz in order to optimise the measurement with respect to the measuring time and quality Inverter 10 Hz AC 0 1000 V DC 0 1500 V DC 1 460 Hz 0 150 μF 50 V For systems involving extremely low frequency control in the range of up ...

Страница 44: ...tage Check fuses See chapter Connection ab Seite 20 ALARM 1 ALARM 2 flash in common mode Connection PE Connection fault E KE not connected to PE Check the wiring of terminals E and KE to earth PE Press the test button See chapter Connection ab Seite 20 ALARM 1 ALARM 2 flash in common mode Device error x Internal device error Press the TEST button Switch the supply voltage off and on Contact Bender...

Страница 45: ...iso1685DP_D00272_02_M_XXEN 07 2017 48 14 Diagrams 14 1 Response time profile Power circuits 1 10 100 0 1 1 10 100 1000 Ce 1μF Ce 10μF Ce 100μF Response value Ran k Res an s p o ...

Страница 46: ...Diagrams iso1685DP_D00272_02_M_XXEN 07 2017 49 14 2 Response time profile High capacitance 10 100 1000 0 1 1 10 100 Ce 1μF Ce 50μF Ce 100μF Ce 500μF Response value Ran k an s p o H ...

Страница 47: ...Diagrams iso1685DP_D00272_02_M_XXEN 07 2017 50 14 3 Response time profile Inverter 10 Hz 1 10 100 0 1 1 10 100 1000 Ce 1μF Ce 10μF Ce 100μF p o Response value Ran k Res an s ...

Страница 48: ...Diagrams iso1685DP_D00272_02_M_XXEN 07 2017 51 14 4 Response time profile Inverter 10 Hz 1 10 100 0 1 1 10 100 1000 Ce 1μF Ce 10μF Ce 100μF p o Response value Ran k Res an s ...

Страница 49: ...Diagrams iso1685DP_D00272_02_M_XXEN 07 2017 52 14 5 Response time profile Fast 2000 μF 10 100 1000 0 1 1 10 100 Ce 1μF Ce 10μF Ce 100μF Ce 1000μF Ce 2000μF Response value Ran k Res an s p o 2000μF ...

Страница 50: ...Diagrams iso1685DP_D00272_02_M_XXEN 07 2017 53 14 6 Leakage capacitance 1 10 100 1000 5 0 0 5 0 5 0 5 Capacitance μF Fault resistance k ...

Страница 51: ...ponse values for insulation monitoring Response value Ran1 alarm 1 200 Ω 1 MΩ 40 kΩ Response value Ran2 alarm 2 200 Ω 1 MΩ 10 kΩ Condition response value Ran1 Ran2 Upper limit of the measuring range when set to Cemax 2000 μF 50 kΩ Upper limit of the measuring range when set to Cemax 500 μF 200 kΩ Relative uncertainty 10 kΩ 1 MΩ acc to IEC 61557 8 15 Relative uncertainty 0 2 kΩ 10 kΩ 200 Ω 15 Hyste...

Страница 52: ...EMC EMC IEC 61326 2 4 Classification of climatic conditions acc to IEC 60721 Stationary use IEC 60721 3 3 3K5 except condensation and formation of ice Transport IEC 60721 3 2 2K3 Long term storage IEC 60721 3 1 1K4 Classification of mechanical conditions acc to IEC 60721 Stationary use IEC 60721 3 3 for iso1685DP 3M4 Transport IEC 60721 3 2 2M2 Long term storage IEC 60721 3 1 1M3 Deviation from th...

Страница 53: ...device 19 20 Connection Connection requirements 17 Connections 15 Coupling monitoring 31 D Date 23 35 Device buttons 16 Device features 10 DIP switch 16 Display 26 Fault display active 26 Fault display inactive 27 Fault memory 27 History memory 28 Signal quality of the measurement 26 Display and operating elements 16 F Factory settings 22 Function description 10 H History memory 28 I Indication 26...

Страница 54: ... 38 Wrong arrangement 38 S Safety instructions 8 Self test 24 after connection to the supply voltage 12 Automatic 13 Manual 13 Service menu 36 Settings Alarm 30 Basic settings 34 Coupling monitoring 31 Date and time 23 35 Inputs 31 Interface 36 Language 23 35 Manual test 34 Measured values 34 Measurement insulation resistance 31 Password 36 Profile 24 30 Reset alarm message 34 Response value Ran1 ...

Страница 55: ......

Страница 56: ...nz Straße 8 35305 Grünberg Germany Tel 49 6401 807 760 Fax 49 6401 807 629 E Mail info bender service com Web http www bender de BENDER Group Bender GmbH Co KG Postfach 1161 35301 Grünberg Germany Londorfer Straße 65 35305 Grünberg Germany Tel 49 6401 807 0 Fax 49 6401 807 259 E Mail info bender de Web www bender de ...

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