Bender RCM420 Manual
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Bender RCM420 Manual

Residual current monitor
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See also: Operating Manual
Manual
RCM420
Residual current monitor
for AC current monitoring in TN and TT systems
Software version: D240 V1.2x
RCM420_D00057_02_M_ XXEN/06.2016

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Summary of Contents for Bender RCM420

  • Page 1 Manual RCM420 Residual current monitor for AC current monitoring in TN and TT systems Software version: D240 V1.2x RCM420_D00057_02_M_ XXEN/06.2016...
  • Page 2 Bender GmbH & Co. KG P.O. Box 1161 • 35301 Gruenberg • Germany Londorfer Strasse 65 • 35305 Gruenberg • Germany Tel.: +49 6401 807-0 • Fax: +49 6401 807-259 E-Mail: info@bender.de • www.bender.de © Bender GmbH & Co. KG All rights reserved.

  • Page 3: Table Of Contents

    Table of Contents 1. Important information ..................7 How to use this manual ................. 7 Technical support: service and support ........... 8 1.2.1 First level support ..................... 8 1.2.2 Repair service ..................... 8 1.2.3 Field service ......................9 Training courses ..................... 10 Delivery conditions ..................
  • Page 4 Table of Contents 3.2.10 Residual current monitoring in window discriminator mode ..18 3.2.11 Password protection (on, OFF) ..............18 3.2.12 Factory setting FAC ..................18 3.2.13 Erasable history memory ................18 3.2.14 External, combined test respectively reset button T/R ....18 3.2.15 Fault memory ....................
  • Page 5 Table of Contents 6. Technical data ....................39 Data in tabular form ..................39 Standards, approvals and certifications ..........42 Ordering information ................... 43 INDEX ........................45 RCM420_D00057_02_M_ XXEN/06.2016...

  • Page 7: Important Information

    1. Important information 1.1 How to use this manual This manual is intended for qualified personnel working in electrical engineering and electronics! Always keep this manual within easy reach for future reference. To make it easier for you to understand and revisit certain sections in this man- ual, we have used symbols to identify important instructions and information.

  • Page 8: Technical Support: Service And Support

    Important information This manual has been compiled with great care. It might nevertheless contain errors and mistakes. Bender cannot accept any liability for injury to persons or damage to property resulting from errors or mistakes in this manual. 1.2 Technical support: service and support For commissioning and troubleshooting Bender offers you: 1.2.1...

  • Page 9: Field Service

    Important information Bender GmbH, Repair-Service, Londorfer Str. 65, 35305 Grünberg 1.2.3 Field service On-site service for all Bender products Commissioning, configuring, maintenance, troubleshooting of Bender   products Analysis of the electrical installation in the building (power quality test,  ...

  • Page 10: Training Courses

    ZVEI (Zentralverband Elektrotechnik- und Elektronikindustrie e. V.) (German Electrical and Electron- ic Manufacturer's Association) also applies. Sale and delivery conditions can be obtained from Bender in printed or elec- tronic format. 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 11: Warranty And Liability

    Important information 1.6 Warranty and liability Warranty and liability claims in the event of injury to persons or damage to property are excluded if they can be attributed to one or more of the follow- ing causes: Improper use of the device. ...

  • Page 12: 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 homepage at www.bender-de.com -> Service & support.

  • Page 13: Safety Instructions

    2. Safety instructions 2.1 General safety instructions Part of the device documentation in addition to this manual is the enclosed "Safety instructions for Bender products". 2.2 Work activities on electrical installations Only qualified personnel are permitted to carry out the work necessary to install, commission and run a device or system.

  • Page 14: Intended Use

    Safety instructions 2.3 Intended use The AC and pulsed DC sensitive residual current monitor RCM420 (Type A) from Bender is designed for fault and residual current monitoring in earthed power supply systems (TN/TT systems) where an alarm is to be activated in the event of a fault, but disconnection must be prevented.

  • Page 15: Function

    3. Function 3.1 Device features AC and pulsed DC sensitive residual current monitor Type A according  to IEC 62020 Adjustable switching hysteresis  r.m.s. value measurement  Starting delay, response delay and delay on release  Measured value display via multi-functional LC display ...

  • Page 16: Connection Monitoring

    Function function can be tested using the test button T. The parameterization of the device can be carried out via the LC display and the function keys integrated in the front plate and can be password-protected. 3.2.1 Connection monitoring The CT connections are continuously monitored. In the event of a fault, the alarm relays K1 / K2 switch without delay, the alarm LEDs AL1 / AL2 / ON flash (Error Code E.01).

  • Page 17: Functional Faults

    3.2.6 Functional faults If an internal functional fault occurs, all three LEDs flash. An error code will appear on the display (E01…E32). In such a case please contact the Bender Service. 3.2.7 Set the number of reload cycles...

  • Page 18: Residual Current Monitoring In Window Discriminator Mode

    Function Delay on release When no alarm exists after deactivating the fault memory, the alarm LEDs go out and the alarm relays switch back to their initial position. After activating the delay on release (0…300 s), the alarm state is continuously maintained for the selected period.

  • Page 19: Installation And Connection

    4. Installation and connection Only qualified personnel 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: An electric shock ...
  • Page 20 Installation and connection The front plate cover is easy to open at the lower part marked by an arrow. 1. DIN rail mounting: Snap the rear mounting clip of the device into place in such a way that a safe and tight fit is ensured. Screw fixing: Use a tool to move the rear mounting clips (a second mounting clip required, see ordering information) to a position that it projects bey-...
  • Page 21 = 100 (500 A / 5 A). That means, when the lowest value of 10 mA is set at the RCM420, a current of 1 A can only just be detected on the primary side of the transformer on the load side. In order to reduce the value that can be de- tected to 100 mA, 10 turns of the supply cable has to be routed through the transformer on the RCM side.
  • Page 22 Installation and connection RCM420_D00057_02_M_ XXEN/06.2016...

  • Page 23: Operation And Setting

    5. Operation and setting 5.1 Display elements A detailed description of the meaning of the display elements is given in the table below. Ele- Display elements Function ment Reload function with memory = off (L = I.) Transformation ratio factor for a second external measuring current transformer.

  • Page 24: Function Of The Operating Elements

    Operation and setting 5.2 Function of the operating elements Ele- Device front Function ment lights continuously: Power On LED green flashes: System fault or connection monito- ring fault AL1, LED Alarm 1 lights (yellow): Response value 1 reached Δ LED Alarm 2 lights (yellow): Res- AL1 AL2 ponse value 2 reached Δ...

  • Page 25: Menu Structure

    Operation and setting 5.3 Menu structure All adjustable parameters are listed in the columns "menu item" and "adjus- table parameters". A display-like representation is used to illustrate the para- meters in the column menu item. Different alarm categories can be assigned to the alarm relays K1, K2 via the submenus r1, r2.

  • Page 26: Display In Standard Mode

    Operation and setting Menu Activati Menu Adjustable parameter Menu item I 12 Selectable parameters: High, window function, low Transformation ratio factor for a second external measuring current transfor- mer. (device con- trol) Parameter setting via pass- word Re-establish factory set- tings Function blocked Display hard / software ver-...

  • Page 27: Display In Menu Mode

    Operation and setting 5.5 Display in menu mode 5.5.1 Parameter query and setting: Overview Menu Adjustable parameter item Response values query and setting: – Residual current I2 (I ) (AL2) Δn2 – Residual current I1 (I ) (AL1) Δn1 – Hysteresis of the response values: % Hys Configuration of the fault memory and the alarm relays: –...
  • Page 28 Operation and setting Move to the next higher menu level (back) Menu structure RCM420_D00057_02_M_ XXEN/06.2016...

  • Page 29: Changeover From Overcurrent To Undercurrent Mode Or To Window

    Operation and setting Parameter settings The following description is based on the fact that the device is in the stan- dard mode and that the measured value of the residual current is being indi- cated, refer to page 26. An example is given here on how to change the alarm response value I1 (I Δn1 It is presumed that the option overcurrent (HI) has been selected in the SEt/I 12 menu (factory setting).

  • Page 30: Response Value Setting For Overcurrent

    Operation and setting 5.5.3 Response value setting for overcurrent: - Response value I2 (overcurrent I Δn2 - Response value I1 (overcurrent I Δn1 - Hysteresis (Hys) of the response values I Δn1 Δn2 Increasing the response value I2 (alarm overcurrent) Increasing the response value I1 (prewarning overcurrent).

  • Page 31: Assigning Alarm Categories To The Alarm Relays

    Operation and setting Setting the fault memory to con mode Setting the alarm relay K1 to N/O operation (n.o.) Setting the number of reload cycles 5.5.5 Assigning alarm categories to the alarm relays Overcurrent, undercurrent and device-related errors of the residual current monitor can be assigned to the alarm relays K1 (r1, 1) and K2 (r2, 2).
  • Page 32 Operation and setting Alarm relay K1: Deactivating the category device error Alarm relay K1: Deactivating the category response value I1 Alarm relay K1: Activating the category response value I2 RCM420_D00057_02_M_ XXEN/06.2016...

  • Page 33: Set The Time Delays

    Operation and setting Alarm relay K1: Deactivating the category "Alarm by device test" When an alarm relay (K1/K2) has been deactivated in the menu, an alarm will not be signalled by the respective changeover contact! An alarm will only be indicated by the CAUTION respective alarm LED (AL1/AL2)! 5.5.6...

  • Page 34: Changing From Overcurrent Operation To Window Operation

    Operation and setting Setting the response delay Setting the starting delay 5.5.7 Changing from overcurrent operation to window operation Use this menu item to set whether the response values of the device apply to overcurrent (HI) or undercurrent operation (Lo). In addition, window operati- on (In) can be selected.

  • Page 35: Transformer

    Operation and setting current transformer Factory setting without cascaded transformer: n = 1. 5.5.9 Factory setting and password protection Use this menu to activate the password protection, to change the password or to deactivate the password protection. In addition, you can reset the device to its factory settings.

  • Page 36: Re-Establishing The Factory Settings

    Operation and setting b) Changing the password c) Deactivating the password protection 5.5.10 Re-establishing the factory settings RCM420_D00057_02_M_ XXEN/06.2016...

  • Page 37: Device Information Query

    Operation and setting 5.5.11 Device information query This function is used to query the software (1.xx) versions. After activating this function, data will be displayed as a scrolling text. Once one pass is completed you can select individual data sections using the Up/Down keys. 5.5.12 History memory query The history memory can be selected via the menu HiS.

  • Page 38: Error Codes

    Appropriate action when error codes > 02 occur: Carry out a reset. Reset the device to factory setting. After elimi- nating the fault, the error code will be automatically deleted. If the fault continues to exist, please contact the Bender Service. RCM420_D00057_02_M_ XXEN/06.2016...

  • Page 39: Technical Data

    Technical data 6. Technical data 6.1 Data in tabular form ( )* = factory setting Insulation coordination acc. to IEC 60664-1/IEC 60664-3 RCM420-D-1: Rated insulation voltage ......................... 100 V Overvoltage category/pollution degree..................... III/3 Rated impulse voltage ........................2,5 kV RCM420-D-2: Rated insulation voltage ........................
  • Page 40 ......................... 0…10 m Shielded cable ≥ 0.75 mm .......................... 0…40 m Recommended cable (shielded, shield on one side connected to terminal l of the RCM420, not connected to earth) ......................................J-Y(St)Y min. 2 x 0.8 Connection ..............................screw terminals Displays, memory Display range, measured value ........................
  • Page 41 Switching elements Number of switching elements ..................... 2 x 1 changeover contact Operating principle ................N/C operation/ N/O operation (N/O operation)* Electrical service life under rated operating conditions............ 10000 switching operations Contact data acc. to IEC 60947-5-1: Utilization category AC-13 AC-14 DC-12 DC-12...

  • Page 42: Standards, Approvals And Certifications

    Technical data Multi-conductor connection (2 conductors with the same cross section): rigid, flexible........................0.2…1.5 / 0.2…1.5 mm Stripping length ............................8…9 mm Tightening torque ............................ 0.5…0.6 Nm Connection type......................push-wire terminals Connection properties: Rigid .......................... 0.2…2.5 mm ( AWG 24…14) Flexible without ferrules ..................

  • Page 43: Ordering Information

    B 9808 0603 WS80x120 80 x 120 B 9808 0606 RCM420 accessories Mounting clip for screw fixing (1 piece per device) ................. B 9806 0008 Measuring current transformers accessories Snap-on mounting for DIN rail: W20… /W35… ................. B 9808 0501 Snap-on mounting for DIN rail: W60 ......................B 9808 0502...
  • Page 44 Technical data RCM420_D00057_02_M_ XXEN/06.2016...

  • Page 45: Index

    INDEX Adjustable parameters, list 25 Installation and connection 19 Automatic self test 16 Intended use 14 Connection of an additional cascaded K1/K2: assignment alarm category 25 measuring current transformer 21 Continuous mode (con), fault memory 18 LED Alarm 1 lights 24 LED Alarm 2 lights 24 Delay on release toff 18 Deleting the fault alarms 24...
  • Page 46 Starting delay t 17 Starting the menu mode 24 Parameter query and setting, overview 27 Support 8 Parameter setting - Activating or deactivating the pass- word protection 35 Technical data 39 - Assigning alarm categories to the Test button 24 alarm relays 31 Training courses 10 - Changing from overcurrent opera-...
  • Page 48 Bender GmbH & Co. KG P.O. Box 1161 • 35301 Gruenberg • Germany Londorfer Strasse 65 • 35305 Gruenberg • Germany Tel.: +49 6401 807-0 • Fax: +49 6401 807-259 E-Mail: info@bender.de • www.bender.de Photos: Bender archives...

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