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User manual - METER SRT-L70 

Temperature stability

50 ppm / °C 

Outputs

relay:   

sensor power supply:   

3 (2 NO and 1 NONC), 8A/250V AC (cos 

ϕ 

= 1)

24V +5%, -10% / max. 100 mA, stabilized,

not separated from measurement inputs

Communication interface

RS 485, 8N1 and 8N2, Modbus RTU, 

not separated

Baud rate

1200 bit/s ÷ 115200 bit/s

Display

LED, 4 digit, 13mm height, red

Data memory

non-volatile memory, EEPROM type

Protection level

IP 20 (housing and connection clips)

Housing type

Housing material

Housing dimensions

DIN rail mounted (35 mm rail)

NORYL UL 94 V-0

72 x 91 x 59 mm

Operating temperature

(depending on version)

0°C to +50°C

or -20°C to +50°C

Storage temperature

(depending on version)

-10°C to +70°C

or -20°C to +70°C

Humidity

Altitude

5 to 90% no condensation

up to 2000 meters above sea level

Screws tightening max. torque

0,5 Nm

Max. connection leads diameter

2,5 mm

2

Safety requirements 

according to: PN-EN 61010-1

installation category: II

pollution degree: 2

voltage in relation to ground: 300V AC
insulation resistance

: >20M

Ω

 

insulation strength between power supply and 

input/output terminal: 1min. @ 2300V

insulation strength between relays terminal:

1min. @ 1350V

EMC

according to: PN-EN 61326-1

This is a class A unit. In a residential  or a similar area it can cause radio 
frequency  interference.   In  such   cases   the   user   can   be   requested   to  use 
appropriate preventive measures. 

5

!

Содержание SRT-L70

Страница 1: ...35 DIN rail mounted Read the user s manual carefully before starting to use the unit or software Producer reserves the right to implement changes without prior notice 2013 06 06 SRT L70_INSSXEN_v 2 07 001 Microlectra bv Microlectra bv Augustapolder 12 2992 SR Barendrecht The Netherlands www microlectra nl info microlectra nl ...

Страница 2: ... 7 DEVICE PROGRAMMING 17 7 1 PROGRAMMING MENU 17 7 2 PARAMETERS EDITION 18 7 2 1 Numeric parameters digit change mode 18 7 2 2 Numeric parameters slide change mode 18 7 2 3 Switch parameters LIST type 19 7 3 MENU DESCRIPTION 19 7 3 1 rEL1 menu 20 7 3 2 inPt menu 22 7 3 3 bri parameter 22 7 3 4 HOLd menu 22 7 3 5 SECu menu 23 7 3 6 rS menu 23 7 3 7 Edit parameter 24 7 3 8 dEFS parameter 24 7 3 9 SE...

Страница 3: ...fety and EMC regulations GND input of device should be connected to PE wire The unit must be properly set up according to the application Incorrect configuration can cause defective operation which can lead to unit damage or an accident If in the case of a unit malfunction there is a risk of a serious threat to the safety of people or property additional independent systems and solutions to preven...

Страница 4: ...splay Thanks to modern SMPS included in SRT L70 it can be powered from wide range of supply voltages The device is equipped with sensor supply output and 3 relay outputs 2 NO and 1 NONC which can be loaded up to max 8A 250V The device has 5 buttons being used for main presets programming additionally all programming operations can be done using IR remote controller IR remote is not a part of SRT L...

Страница 5: ...ending on version 0 C to 50 C or 20 C to 50 C Storage temperature depending on version 10 C to 70 C or 20 C to 70 C Humidity Altitude 5 to 90 no condensation up to 2000 meters above sea level Screws tightening max torque 0 5 Nm Max connection leads diameter 2 5 mm2 Safety requirements according to PN EN 61010 1 installation category II pollution degree 2 voltage in relation to ground 300V AC insul...

Страница 6: ... from the protective packaging check for transportation damage Any transportation damage must be immediately reported to the carrier Also write down the unit serial number located on the housing and report the damage to the manufacturer Attached with the unit please find user s manual warranty 4 2 ASSEMBLY Disconnect the power supply prior to starting assembly Check the connections are wired corre...

Страница 7: ... is completed do not touch the unit s connections when it is switched on because it carries the risk of electrical shock Due to possible significant interference in industrial installations appropriate measures assuring correct operation of the unit must be applied To avoid the unit of improper indications keep recommendations listed below Avoid running signal cables and transmission cables togeth...

Страница 8: ...lation replacing and cable terminals All connections must be made while power supply is disconnected Figure 4 2 Terminals description 8 15 16 17 18 19 20 21 22 23 24 GND DATA DATA RS 485 n c n c n c Uo 24V 5 10 Imax 100mA Pt100 500 1000 R2 R3 Pt100 500 1000 21 22 23 24 n c n c n c 13 14 3 4 5 6 7 8 9 10 11 12 1 2 Power supply depend on version R1 n c Pt100 500 1000 21 22 23 24 n c n c 6 7 mm max 2...

Страница 9: ...n circuit typically capacitor 47nF min 250VAC in series with 100R 5W resistor connected in parallel to relay terminals or better directly on the load In consequence of using the suppression circuit the level of generated electromagnetic disturbances is lower and the life of relay contacts rises a b Figure 4 4 Examples of suppression circuit connection a to relay terminals b to the inductive load T...

Страница 10: ...onnection circuit should not be changed while unit is powered Every change of connection while the unit is powered causes measurement errors by several seconds after change 4 4 MAINTENANCE The unit does not have any internal replaceable or adjustable components available to the user Pay attention to the ambient temperature in the room where the unit is operating Excessively high temperatures cause...

Страница 11: ... R3 threshold Symbol used in the manual v Functions First threshold value modification of selected relay in preview mode Enter to main menu press and hold both of them at least 2 sec Change of the present menu Modification of the parameter value 6 PRINCIPLE OF OPERATION After turning the power supply on device ID and software version are showed on the display next the controller goes to the measur...

Страница 12: ...o it Note all parameters can be remote changed via RS 485 interface Configuration of the device via menu or RS 485 interface do not stops measures 6 2 DETECTION OF THE PEAK VALUES The SRT L70 controller is equipped with peaks detection function It can detect a peaks of the input signal and display their values Presets connected with this function are placed in HOLd menu see description of HOLd men...

Страница 13: ...sholds Modes of the control can be changed depend on the values of parameters SEtP SEt2 HYSt modE t on toFF unit and AL Depend on modE parameter relays can be not used or controlled over one or two thresholds values If one threshold is used Figure 6 2 the relay can be turned on modE on or off modE oFF when the input signal value is contained in zone A If two thresholds are used Figure 6 3 the rela...

Страница 14: ...y LED outputs The relay outputs and LEDs named R can be controlled depend on both the current value and the peak value when peak detection is active of the input signal 14 zone A zone B measure SEtP parameter HYSt parameter state of relay LED zone B zone A zone B measure SEtP or SEt2 parameter HYSt parameter state of relay LED i ...

Страница 15: ...hysteresis and threshold hysteresis respectively If t on and toFF parameters are set to 0 then the relay state will be changed as soon as input value exceeds any of the border values see points A and C Figure 6 4 a b c If values of t on or and toFF are positive then relay state will be turned on if the input value exceeds the border values and stay bigger or lower during at least t on see points B...

Страница 16: ... connected with relay outputs are described in paragraph rEL1 menu 6 3 2 Two thresholds mode Objaśnienie A B C D E points where measured signal exceeds border values expected value allowed deviation BON BOFF CON COFF EON EOFF relays state changes moments for t on 0 toFF 0 tA tB tC tD tE time periods while input signal is in zone A or zone B Figure 6 5 Principle of LED relay output operation for tw...

Страница 17: ...rameters is described in paragraph MENU DESCRIPTION Some of the parameters can be accessed without menu entering quick view mode After pressing or v button name of the threshold e g rEL1 and his value will be displayed on the display in alternating mode If or v will be pressed in 5 sec again the next threshold will be displayed else the device comes back to the measurement mode If a free access is...

Страница 18: ...ode by digit Edit dig pressing one of the keys or v causes change of current position flashing digit or the sign Short pressing of the ENTER button causes change of the position digit Press ENTER at least 2 seconds to accept the changes after that question SEt is displayed and user must to confirm or cancel the changes To conform changes and story it in EEPROM press ENTER button shortly after SEt ...

Страница 19: ...meric and switching parameters Change of current flashing digit value while editing numeric parameter or value of switch parameter If numerical parameter is being edited a short press of ENTER R2 button change edited position A long press of ENTER R2 button at lest 2 sec causes of display a SEt ask which allow user to make sure if change of the parameter value is correct If switch parameter is bei...

Страница 20: ...n or out value Threshold is the medium value of relay hysteresis HYSt hysteresis of relay range 0 999 Full hysteresis of the relay is equal to 2x HYSt parameter The relay state can change when an input signal is out of threshold hysteresis to threshold hysteresis zone Presented parameters should be set to ensure that SEtP HYSt SEt2 HYSt SEtP HYSt or SEt2 HYSt do not exceeds the measure range Addit...

Страница 21: ...sis at least toFF time toFF range 0 99 9 defined with 0 1 sec resolution Unit of this parameter is set by unit parameter If time when the input signal exceeds some border value is shorter than t on or toFF time the relay do not change his state see paragraph CONTROL OF THE RELAY OUTPUTS unit unit of time for t on i toFF parameters Can be set on one of two values min minutes SEC seconds AL this par...

Страница 22: ... set to conventional values from 1 to 8 7 3 4 HOLd menu This menu contains parameters connected with peak detection function See also full description of the peak detection function in paragraph DETECTION OF THE PEAK VALUES modE the type of detected changes of the input signal can be set to values norm peaks peak and next drop of the input signal of value equal at least PEA inv drops drop and next...

Страница 23: ...S menu This menu is connected with RS 485 interface and sets his properties Addr this parameter defines the address of the device accordingly to Modbus protocol It can be set in range from 0 to 199 If the value 0 is set then device responds to frames with address 255 FFh bAud this parameter determines RS 485 interface baud rate It can be set to one of 8 possible values 1 2 2 4 4 8 9 6 19 2 38 4 57...

Страница 24: ...e third party RS converters rESP should be adjusted experimentally Table 7 1 contains most frequently used values bAud parameter 38 4 57 6 115 2 rESP parameter 10c 20c 50c Tab 7 1 Settings of rESP parameter 7 3 7 Edit parameter This parameter allows to change the edition mode of numerical parameters dig the change to by digit mode Slid slide change mode 7 3 8 dEFS parameter This setting allows to ...

Страница 25: ...u rS Edit dEFS SErv Parameter edition Addr bAud mbAc mbtO rESP Parameter edition Scod A r1 A r2 A r3 modE PEA timE Hdis H r1 H r2 H r3 Parameter edition SEt 4 digit special password entering 0 _ _ _ Default settings restoring R1 ESC R1 ESC R1 ESC R1 ESC R1 ESC R1 ESC R2 ENTER R2 ENTER R1 ESC R2 ENTER R1 ESC R2 ENTER R2 ENTER R1 ESC R2 ENTER R1 ESC R1 ESC R1 ESC R2 ENTER R1 ESC R2 ENTER R2 ENTER R1...

Страница 26: ...ons can not exceeds 16 registers for single frame The device interprets the broadcast messages but then do not sends the answers 9 1 LIST OF REGISTERS Register Write Range Register description 01h No 999 6000 Measurement value no decimal point 02h No 0h A0h 60h The status of the current measurement 0h data valid A0h top border of the measurement range is exceeded 60h bottom border of the measureme...

Страница 27: ...meter numerical parameters edit mode 0 dig mode 1 SLid mode 30h Yes 999 9999 SEtP parameter in rEL1 menu no decimal point included 31h Yes 999 999 HySt parameter in rEL1 menu no decimal point included 32h Yes 0 5 modE parameter in rEL1 menu 0 noAC mode 1 on mode 2 oFF mode 3 in mode 4 out mode 5 modb mode 33h Yes 0 999 t on parameter in rEL1 menu expressed in tenth of seconds or tenth of minutes d...

Страница 28: ... 0 1 unit parameter in rEL3 menu 0 seconds 1 minutes 46h Yes 0 2 AL parameter in rEL3 menu 0 no changes 1 on 2 off 47h Yes 999 9999 SEt2 parameter in rEL3 menu no decimal point included 50h Yes 0 1 modE parameter in HOLd menu type of detected changes 0 peaks 1 drops 51h Yes 0 9999 PEA parameter in HOLd menu minimum detectable change no decimal point included 52h Yes 0 199 timE parameter in HOLd me...

Страница 29: ...amples apply for device with address 1 All values are represent hexadecimal Field description ADDR Device address on modbus network FUNC Function code REG H L Starting address address of first register to read write Hi and Lo byte COUNT H L No of registers to read write Hi and Lo byte BYTE C Data byte count in answer frame DATA H L Data byte Hi and Lo byte CRC L H CRC error check Hi and Lo byte 1 ...

Страница 30: ... 3 Change of the device address from 1 to 2 write to reg 20h ADDR FUNC REG H L DATA H L CRC L H 01 06 00 20 00 02 09 C1 DATA H 0 DATA L new device address 2 The answer the same as the message ADDR FUNC REG H L DATA H L CRC L H 01 06 00 20 00 02 09 C1 4 Change of baud rate of all devices connected to the net BROADCAST message ADDR FUNC REG H L COUNT H L CRC L H 00 06 00 22 00 04 29 D2 DATA H 0 DATA...

Страница 31: ...OUNT L the count of being read registers max 16 The answer ADDR FUNC BYTE C DATA H1 L1 DATA H2 L2 DATA H3 L3 CRC L H 01 03 06 00 0A 00 00 00 01 78 B4 DATA H1 L1 reg 01h 10 displayed value 1 0 DATA H2 L2 reg 02h 0 no errors DATA H3 L3 reg 03h 1 decimal point position 0 0 There is no full implementation of the Modbus Protocol in the device The functions presented above are available only 31 i ...

Страница 32: ...ld 60 0 20 HYSt Hysteresis of relay R2 0 0 20 modE Operation mode of relay R2 on 20 t on Turn on delay of relay R2 0 0 21 toFF Turn off delay of relay R2 0 0 21 unit Unit of t on toFF parameters of relay R2 SEC 21 AL Reaction for critical situation of relay R2 oFF 21 Parameters of relay R3 operation rEL3 menu SEtP Relay R3 threshold 60 0 20 SEt2 Relay R3 second threshold 80 0 20 HYSt Hysteresis of...

Страница 33: ...ettings of access to the configuration parameters SECu menu A r1 Permission to changes of relay R1 threshold without of the user password knowledge on 23 A r2 Permission to changes of relay R2 threshold without of the user password knowledge on 23 A r3 Permission to changes of relay R3 threshold without of the user password knowledge on 23 RS 485 interface configuration menu rS Addr Device address...

Страница 34: ...User manual METER SRT L70 34 ...

Страница 35: ...User manual METER SRT L70 35 ...

Страница 36: ...Microlectra bv Augustapolder 12 2992 SR Barendrecht The Netherlands www microlectra nl info microlectra nl ...

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