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Bender RCMB300 Series Manual

Ac/dc sensitive residual current monitoring module for mrcd applications
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Manual
RCMB300-series
AC/DC sensitive residual current monitoring module
for MRCD applications
MANUAL EN
RCMB300-series_D00372_01_M_XXEN/06.2019

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Summary of Contents for Bender RCMB300 Series

  • Page 1 Manual RCMB300-series AC/DC sensitive residual current monitoring module for MRCD applications MANUAL EN RCMB300-series_D00372_01_M_XXEN/06.2019...
  • Page 2 Bender GmbH & Co. KG Postfach 1161 • 35301 Grünberg • Germany Londorfer Str. 65 • 35305 Grünberg • Germany Tel.: +49 6401 807-0 • Fax: +49 6401 807-259 E-Mail: info@bender.de • www.bender.de © Bender GmbH & Co. KG Alle Rechte vorbehalten.

  • Page 3: Table Of Contents

    Inhaltsverzeichnis 1. General instructions ................7 How to use this manual .................. 7 Technical support: service and support ............ 7 Training courses ....................8 Delivery conditions ................... 9 Inspection, transport and storage ............... 9 Warranty and liability ..................9 Disposal ....................... 10 2.
  • Page 4 Inhaltsverzeichnis 5. Commissioning ..................25 Setting addresses .................... 25 Offset calibration ..................... 27 Completing and checking installation ............. 28 6. Test, reset, function test ..............29 Periodic self test ....................29 Manual self test ....................29 6.2.1 Integrated "T" button ..................29 6.2.2 External test/reset button ................
  • Page 5 Inhaltsverzeichnis 10. Technical data ..................53 10.1 Tabular data ....................... 53 10.2 Standards and certifications ................ 57 10.3 Ordering details ....................57 INDEX ......................59 RCMB300-series_D00372_01_M_XXEN/06.2019...
  • Page 6 Inhaltsverzeichnis RCMB300-series_D00372_01_M_XXEN/06.2019...

  • Page 7: General Instructions

    This symbol denotes information intended to assist the user in making optimum use of the product. 1.2 Technical support: service and support For commissioning and troubleshooting Bender offers: First level support Technical support by phone or e-mail for all Bender products • Questions about specific customer applications • Commissioning •...

  • Page 8: Training Courses

    **Mo-Thu 7.00 a.m. - 4.00 p.m., Fr 7.00 a.m. - 1.00 p.m 1.3 Training courses Bender is happy to provide training regarding the use of test equipment. The dates of training courses and workshops can be found on the Internet at www.bender.de ->...

  • Page 9: Delivery Conditions

    ZVEI (Zentralverband Elektrotechnik- und Elektronikindustrie e.V., (German Elec- trical and Electronic Manufacturers' Association) also applies. Conditions of sale and delivery can be obtained from Bender in printed or electronic for- mat. 1.5 Inspection, transport and storage Inspect the dispatch and equipment packaging for damage, and compare the contents of the package with the delivery documents.

  • Page 10: Disposal

    13 August 2005 must be taken back by the manufacturer and disposed of properly. For more information on the disposal of Bender devices, refer to our website at www.bender.de -> Service & support.

  • Page 11: Safety Instructions

    2.3 Intended use The residual current monitoring modules of the RCMB300 series are intended for meas- uring AC and DC fault currents in earthed systems (TN and TT systems). The modules are able to measure residual currents up to I = 20 A in a frequency range Δ...
  • Page 12 Safety instructions RCMB300-series_D00372_01_M_XXEN/06.2019...

  • Page 13: Device Description

    3. Device description 3.1 Area of application The residual current monitoring modules of the RCMB300 series are intended for meas- uring AC and DC fault currents in earthed systems (TN and TT systems). The modules are able to measure residual currents up to I = 20 A in a frequency range of DC…100 kHz.

  • Page 14: Variants

    Device description • Separate evaluation of the AC and DC components as well as the r.m.s. value of the residual current possible • Exchangeable electronic enclosure without mechanical separation of the primary conductors • Extension/retrofitting or modification of functionalities in case of changed moni- toring requirements •...

  • Page 15: Functional Description

    Device description 3.4 Functional description Residual current I Δn The residual current monitoring module measures both AC and DC currents. Tripping takes place based on the determined r.m.s. value. When the response value set for I Δn2 (alarm) is exceeded by a residual current, the output relay K2 switches an undervoltage release (recommended) or a shunt release (N/O operation) within the required tripping time and the LED lights up red.
  • Page 16 Device description RCMB300-series_D00372_01_M_XXEN/06.2019...

  • Page 17: Installation And Connection

    4. Installation and connection Only qualified personnel working in electrical engineering and electronics are permitted to carry out the work necessary to install, commission and run a device or system. Risk of electrocution due to electric shock! Touching live parts of the system carries the risk of: •...

  • Page 18: Installing The Device

    Installation and connection 4.2 Installing the device 4.2.1 Dimension diagrams CTBC20(P)/CTBC35(P) CTBC60(P) CTBC120(P)/CTBC210(P) RCMB30… Fig. 4.1: Dimension diagrams CTBC… and RCMB30… Type ø 20 RCMB30…-CTBC20(P) ø 35 RCMB30…-CTBC35(P) ø 60 RCMB30…-CTBC60(P) ø 120 RCMB30…-CTBC120(P) ø 210 RCMB30…-CTBC210(P) RCMB30… all dimensions in mm, tolerance ±0.5 mm RCMB300-series_D00372_01_M_XXEN/06.2019...

  • Page 19: Mountings

    Installation and connection 4.2.2 Mountings CTBC20(P)/CTBC35(P) CTBC60(P) CTBC120(P)/CTBC210(P) Type CTBC20(P) 31.4 2 x ø 5.5 CTBC35(P) 49.8 2 x ø 5.5 CTBC60(P) 2 x ø 6.5 CTBC120(P) 4 x ø 6.5 CTBC210(P) 4 x ø 5.5 all dimensions in mm, tolerance ±0.5 mm 4.3 Assembly Fig.

  • Page 20: Connecting The Device

    Installation and connection 4.4 Connecting the device Risk of electrocution due to electric shock! Touching live parts of the system carries the risk of: • An electric shock DANGER • Damage to the electrical installation • Destruction of the device Before installing and connecting the device, make sure that the installation has been de-energised.

  • Page 21: Wiring Diagram

    Installation and connection 4.5 Wiring diagram F 6 A DC 24 V 24 V SPD = surge protection device RCMB301-CTBC... 22 24 22 24 12 14 Alarm Prewarning Fig. 4.3: Wiring diagram RCMB30…(N/C principle) • The use of a type 2 surge protection device (SPD) is mandatory due to possible impulse voltages and in order to comply with normative requirements.

  • Page 22: Connection Rs-485 Interface (Modbus Rtu)

    Installation and connection 4.6 Connection RS-485 interface (Modbus RTU) MRCDB30… COM465IP first device last device 120 Ω 120 Ω DIP switch wire jumper Fig. 4.4: Connection RS-485 interface The internal 120 Ω terminating resistor can be connected by using the wire jumper. The internal 120 Ω...

  • Page 23: Installation Instructions For Measuring Current Transformers

    Installation and connection 4.7 Installation instructions for measuring current transformers Do not route any shielded cables through the measuring current transformer! Device damage due to high induction currents! High currents can be induced into the conductor loop due to the AC/DC sensitive measuring technology used.
  • Page 24 Installation and connection RCMB300-series_D00372_01_M_XXEN/06.2019...

  • Page 25: Commissioning

    Commissioning 5. Commissioning 5.1 Setting addresses Every RCMB3… has a factory-set Modbus address. The address is 1XX, where XX = the last two digits of the serial number. Example: Serial number = 12345678 --> Modbus address = 178 If the preset address is to be changed, this can be done •...
  • Page 26 Commissioning Procedure Phase Action Flashes red (A, error: no measuring Supply the electronic module with power current transformer) Flashes red (A, error) Flashes red quickly Press and hold "T" until the LED flashes red very quickly; release afterwards (B, mode change) Flashes red quickly (C, ready for address setting mode) Flashes red very quickly (D, address...

  • Page 27: Offset Calibration

    5.2 Offset calibration The residual current monitoring module must be calibrated to the system to be moni- tored so that the selected protective function can be fulfilled. Each RCMB30… electron- ic module must be individually calibrated to the CTBC… built-in measuring current transformer.

  • Page 28: Completing And Checking Installation

    Commissioning Procedure of the first offset calibration Phase Action Install the measuring current transformer in the system Plug the electronic module and the measuring current transformer together (see Chapter 4.5) Disconnect the electronic module from the supply voltage Press and hold the "T" button lights red permanently (not ready for operation) Press and hold the "T"...

  • Page 29: Test, Reset, Function Test

    Test, reset, function test 6. Test, reset, function test 6.1 Periodic self test The RCMB… electronic module carries out a self diagnosis at regular intervals and thus ensures the device function. The electronic module feeds a test current into the test winding of the measuring current transformer.
  • Page 30 Test, reset, function test RCMB300-series_D00372_01_M_XXEN/06.2019...

  • Page 31: Modbus Register

    7. Modbus register This chapter provides a complete description of the Modbus register for the MRCDB300/RCMB300 series to allow access to information. The following Modbus function codes are supported • Holding register for reading out values (Read Holding Register; function code 0x03) •...

  • Page 32: Register Areas

    Modbus register 7.1.3 Register areas Area Start address End address Info 3999 Detailed measured values 4000 7999 Simple measured values 8000 11999 History 12000 15999 Parameters 16000 19999 Control commands 20000 23999 Reserved 24000 27999 Reserved 60000 60099 7.1.4 Representation of values Value Description Value...

  • Page 33: Alarm Assignments

    (\0 = end character) B74043122\0 Character is in the LoByte String UTF- 1066 Serial number Maximum 96 characters String UTF- Bender GmbH & 1098 Manufacturer name (\0 = end character) Co. KG\0 Character is in the LoByte Application 1194 UINT16 (MRCDB3…)
  • Page 34 Character is in the LoByte in each case. Internet address manu- 1202 - String-UTF8 Maximum 32 characters. www.bender.de\0 1233 facturer \0 = NULL character = string end 1234 - String UTF- <location>\0 Installation location...

  • Page 35: Detailed Measured Values

    Modbus register 7.3 Detailed measured values Register Property Format Description Value/unit 4000 UINT16 Measuring channel number (1) 4001 Float32 Residual current measured value (AC) 4003 UINT16 Test and alarm status 4004 UINT16 Range and unit 4005 UINT16 Description 4006…4015 Reserved 4016 UINT16 Measuring channel number (2)

  • Page 36: General Measured Values

    Modbus register 7.4 General measured values Unit Register Property Format Description Value Comment Measured value (AC) 8000 Float32 Δn Measured value (DC) 8002 Float32 Δn Measured value (RMS) 8004 Float32 Δn 8006 Float32 Device/info code Device error and status information 8008 UINT32 Number of alarms...

  • Page 37: Device Error Codes

    The error is deleted either by switching the device off/ on or by performing a reset. The device restarts com- pletely (switching of relays possible). If the error per- sists, return the device or contact Bender service. 6.10 No initial off- No offset measurement has Perform offset measurement.
  • Page 38 Action code group 9.03 μC system error Switch the device off and on again. If error persists, return the device or contact Bender service. 9.60 Parameter Parameter outside permissible Switch the device off and on again. Reset device to fac-...

  • Page 39: History

    7.5 History A maximum of 50 events can be stored. The events are sorted chronologically in such a way that the most recent event is number 1 and the oldest event is number 50. The history memory is buffered and is only updated by reading register 12000 so that the sequence does not change during readout (due to a new history event).

  • Page 40: Device Parameters And Factory Settings

    Modbus register 7.6 Device parameters and factory settings = response delay = delay on release Value range Factorysettings Description Unit RCMB301 {Step size} Limit value 0.03…3.00 A 16000 0.03 alarm {1 mA} Limit value 50 … 100 % 16002 60 % prewarning {1 %} 10 …...
  • Page 41 Value range Factorysettings Description Unit RCMB301 {Step size} 1 = N/C principle 16038 Relay mode 2 = N/O principle Alarm assignment 16039 start alarm Alarm assignment 16040 device error 16041 Alarm assignment test Alarm assignment Alarm assignment limit value violation 16042 Δn 1 = inactive...
  • Page 42 Modbus register Value range Factorysettings Description Unit RCMB301 {Step size} 1 = N/C principle 16056 Relay mode 2 = N/O principle Alarm assignment 16057 start alarm Alarm assignment 16058 device error 16059 Alarm assignment test Alarm assignment Alarm assignment limit value violation 16060 Δn 1 = inactive...
  • Page 43 Value range Factorysettings Description Unit RCMB301 {Step size} 16078 Modbus address 1…247 1200 2400 4800 16079 Baud rate 9600 19200 38400 57600 1 = 8N2 2 = 8O1 3 = 8E1 16081 Parity/stop bit 4 = 8N1 5 = 8O2 6 = 8E2 16082…16083 Reserved...
  • Page 44 Modbus register Notes: Register 16074 "Filter mode" Adjustable Register Meaning entry RCMB 301 Normal (full bandwidth: 100 kHz) Low-pass 60 Hz Low-pass 500 Hz Low-pass 1 kHz Low-pass 2 kHz Low-pass 5 kHz Low-pass 10 kHz Low-pass 20 kHz Low-pass 50 kHz Type B Reserved Type B+ (up to 100 kHz)

  • Page 45: Control Commands

    7.7 Control commands Comment Factory Register Property Format Description Unit setting Value Manual device tripping test. Same behaviour as test button. Read 20000 UINT16 Device test 1 = test inactive/completed 2 = test running Write 2 = start test Deleting fault and alarm messages. Same behav- 20001 UINT16 Device reset...
  • Page 46 Modbus register Comment Factory Register Property Format Description Unit setting Value Read 1 = offset measurement inactive/completed 2 = offset measurement running 20009 UINT16 Start offset measurement Write 2 = start offset measurement (secured via reg. 12005) 0 = no test alarm 1 = test alarm channel 1 20010 UINT16...

  • Page 47: Additional Function Codes

    Modbus register 7.8 Additional function codes: 7.8.1 Diagnostic (function code 0x08) Sub-function code Sub-function code name Error counter Supported Notes number (decimal) Return Query Data Restart Communication Return Diagnostic Register Change ASCII Input Delimiter Force Listen Only Mode Reserved 5…9 Clear Counters and Diagnostic Register Return Bus Message Count Return Bus Communication Error Count...

  • Page 48: Report Server Id (Function Code 0X11)

    Modbus register 7.8.3 Report Server ID (function code 0x11) Response Notes Byte count Number of bytes from "Server ID" to "Installation location" Server ID Is always 0x01. Run Indicator Status Is always 0xFF. Manufacturer name Same information as register 1098. Device name Same information as register 1002.

  • Page 49: System States: Led And Output Relays

    System states: LED and output relays 8. System states: LED and output relays The LED indicates the system state by means of colours and lighting/flashing. The N/O contacts of relay outputs K1 and K2 have defined switching positions for each system state.
  • Page 50 System states: LED and output relays RCMB300-series_D00372_01_M_XXEN/06.2019...

  • Page 51: Frequency Responses

    Frequency responses 9. Frequency responses 9.1 Low passes LP ∆n 10 x I ∆n 5 x I ∆n 1 x I ∆n 1000 10000 100000 f (Hz) 9.2 Type B+ 1000 (mA) ∆n = 300 mA ∆n = 100 mA ∆n = 30 mA ∆n...

  • Page 52: Type B

    Frequency responses 9.3 Type B 1000 ∆n (mA) = 30 mA ∆n 1000 f (Hz) 9.4 Fire protection 100 kHz 1000 (mA) ∆n = 300 mA ∆n = 100 mA ∆n = 30 mA ∆n 1000 10000 100000 f (Hz) RCMB300-series_D00372_01_M_XXEN/06.2019...

  • Page 53: Technical Data

    10. Technical data 10.1 Tabular data Insulation coordination acc. to IEC 60664-1/IEC 60664-3 Definitions Measuring circuit (IC1) .......Primary conductors routed through the current transformer Secondary (IC2) ..........terminal block 1 (24 V, GND, T/R, GND, A, B, X1, X2) Control circuit 1 (IC3) ................Terminal block 1 (11,12,14) Control circuit 2 (IC4) ................Terminal block 2 (21,22,24) Rated insulation voltage......................
  • Page 54 Technical data Measuring circuit Internal diameter measuring current transformer ......see dimension diagrams Page 18 Characteristics according to IEC 62020 and IEC/TR 60755 ......... AC/DC sensitive, type B Measuring range ........................5 mA…20 A Response value I ............30 mA…3 A (freely configurable), (30 mA)* Δn Prewarning ..............50 %…100 % I (freely configurable), (60 %)
  • Page 55 Operating time t at 1 x I ..........................≤ 230 ms Δn at 2 x I ..........................≤ 180 ms Δn at 5 x I ..........................≤ 70 ms Δn Response time t Recovery time t ..........................≤ 1 s Indication Multicolour LED .........Refer to "System states: LED and output relays"...
  • Page 56 Technical data Connection Required terminals are included in the scope of delivery Terminal block 1 Manufacturer ......................Phoenix Contact Type .........................DFMC 1.5/5-ST-3.5 BK The connection conditions of the manufacturer apply. Connection properties rigid....................0.2…1.5 mm² (AWG 24…16) flexible ..................... 0.2…1.5 mm² (AWG 24…16) with ferrules ................0.25…0.75 mm²...

  • Page 57: Standards And Certifications

    Technical data Weight RCMB301..........................≤ 100 g CTBC20 ........................... ≤ 160 g CTBC20P ..........................≤ 220 g CTBC35 ............................ ≤ 240 g CTBC35P ..........................≤ 320 g CTBC60 ............................ ≤ 460 g CTBC60P ..........................≤ 620 g CTBC120 ..........................≤ 1390 g CTBC120P ..........................≤...
  • Page 58 Technical data Accessories Description Art. No. USB to RS-485 interface converter B95012045 Terminal block for RCMB module (spare part) B74043124 Suitable system components The use of the listed power supply units is recommended. The use of a surge protection device is mandatory for these power supply units. Max.

  • Page 59: Index

    INDEX N/C principle 21 N/C principle (with contact feedback) 21 N/O principle 21 Address setting 25 Application example 15 Area of application 13 Output relays 49 Assembly 19 Periodic self test 29 Bending cables 23 Protective conductors and live conductors 23 Device features 13 Route-through direction 23 Device view RCMB30…...
  • Page 60 All rights reserved. Reprinting and duplicating only with permission of the publisher. Bender GmbH & Co. KG P.O. Box 1161 • 35301 Grünberg • Germany Londorfer Str. 65 • 35305 Grünberg • Germany Tel.: +49 6401 807-0 • Fax: +49 6401 807-259 E-Mail: info@bender.de •...

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