Bender RCMA420 Manual
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Bender RCMA420 Manual

Residual current monitor for monitoring ac, dc and pulsed dc currents in tn and tt systems
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Manual
RCMA420
Residual current monitor
for monitoring AC, DC and pulsed DC currents
in TN and TT systems
Software version D242 V1.2x
RCMA420_D00059_02_M_XXEN/06.2016

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Summary of Contents for Bender RCMA420

  • Page 1 Manual RCMA420 Residual current monitor for monitoring AC, DC and pulsed DC currents in TN and TT systems Software version D242 V1.2x RCMA420_D00059_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 ..................5 How to use this manual ................. 5 Technical support: service and support ........... 6 1.2.1 First level support ..................... 6 1.2.2 Repair service ..................... 6 1.2.3 Field service ......................7 Training courses ....................8 Delivery conditions ..................
  • Page 4 Table of Contents 3.2.11 Factory setting FAC ..................17 3.2.12 Erasable history memory ................17 3.2.13 External, combined test/reset button T/R ..........17 3.2.14 Fault memory ....................17 4. Installation and connection ................. 19 5. Operation and setting .................. 21 Display elements in use ................

  • Page 5: 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 manual, we have used symbols to identify important instructions and information.

  • Page 6: 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 7: Field Service

    Please send the devices for repair to the following address: 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 8: Training Courses

    Important information 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.com -> Know-how -> Seminars. 1.4 Delivery conditions Bender sale and delivery conditions apply.

  • Page 9: 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 following causes: Improper use of the device. ...

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

  • Page 11: 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 12: Intended Use

    Safety instructions 2.3 Intended use The AC/DC sensitive residual current monitor RCMA420 is designed for use in earthed systems (TN and TT systems) where DC and AC fault currents may occur. These are in particular loads containing six-pulse rectifiers or one way rectifiers with smoothing, such as converters, battery chargers, construction site equipment with frequency- controlled drives.

  • Page 13: Function

    3. Function 3.1 Device features AC/DC sensitive residual current monitor Type B according to  IEC 62020 and IEC 60755 Two separately adjustable response ranges (prewarning, alarm)  Adjustable switching hysteresis  r.m.s. value measurement  Starting delay, response delay and delay on release ...

  • Page 14: Connection Monitoring

    Function has elapsed, the alarm relays return to their original state and the alarm LEDs AL1/AL2 go out. If the fault memory is activated, the alarm relays remain in the alarm state and the LEDs light until the reset button is pressed or until the supply voltage is interrupted. The device function can be tested using the TEST button.

  • Page 15: Manual Self Test

    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. 3.2.6 Set the number of reload cycles If faults occur only temporarily, but recurrently, in the system being monitored, with the fault memory M deactivated, the alarm relays would switch synchronously to the error status.

  • Page 16: Time Delays T, Ton And Toff

    Function 3.2.8 Time delays , The times t, t and t described below, delay the output of alarms off, via LEDs and relays. Starting delay After connection to the supply voltage, the alarm indication is delayed by the preset time t (0…10 s). Response delay on1/2 If the residual current increases above or falls below the response...

  • Page 17: Factory Setting Fac

    Function 3.2.11 Factory setting FAC After activating the factory setting, all settings previously changed are reset to delivery status. 3.2.12 Erasable history memory The first alarm value that occurs will be saved in this memory. The memory can be cleared via the menu HiS. 3.2.13 External, combined test/reset button T/R Reset = Pressing the external button <...
  • Page 18 Function RCMA420_D00059_02_M_XXEN/06.2016...

  • 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: Operation And Setting

    5. Operation and setting 5.1 Display elements in use A detailed description of the meaning of the display elements in use is given in the table below. Ele- Display elements in use Function ment Reload function with memory = off (L = I.) Response value I as mA...

  • Page 22: Function Of The Operating Elements

    Operation and setting 5.2 Function of the operating elements Device front Element Function LED lighting continuously: Power On green Flashing LED: System fault or connection monito- ring fault AL1, LED Alarm 1 lights (yellow): Response value 1 reached Δn1 LED Alarm 2 lights (yellow): Res- AL1 AL2 ponse value 2 reached Δn2...

  • Page 23: Menu Structure

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

  • Page 24: Display In Standard Mode

    Operation and setting Menu Activa- Menu Adjustable parameter Menu item tion t on 1 Response delay K1 t on 2 Response delay K2 (timing check) Starting delay t off Delay on release K1/K2 Selectable parameters: I 12 High, window function, low Parameter setting via pass- (device con- word...

  • Page 25: 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 26 Operation and setting Menu structure RCMA420_D00059_02_M_XXEN/06.2016...

  • Page 27: Changeover : Overcurrent/Undercurrent/Window Mode

    Operation and setting Parameter settings An example is given here on how to change the alarm response value I1 (I ). It is presumed that the option overcurrent (HI) has been Δn1 selected in the SEt/I 12 menu (factory setting). Proceed as follows: 1.

  • Page 28: 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 29: Setting The Fault Memory And Alarm Relay Operating Mode

    Operation and setting 5.5.4 Setting the fault memory and alarm relay operating mode Setting the fault memory to con mode Setting the alarm relay K1 to N/O operation (n.o.) Setting the number of reload cycles RCMA420_D00059_02_M_XXEN/06.2016...

  • Page 30: Assigning Alarm Categories To The Alarm Relays

    Operation and setting 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). By default, the alarm relays K1 and K2 signal prewarning and alarm in case of overcurrent and device-related errors.
  • Page 31 Operation and setting Alarm relay K1: Activating the category response value I2 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)!

  • Page 32: Set The Time Delays

    Operation and setting 5.5.6 Set the time delays The following delays can be set: Response delay t (0…10 s) for K1, and t (0…10 s) for K2  Starting delay t (0…10 s) when the device is being started  Common delay on release t (0…99 s) for K1, K2.

  • Page 33: Changing From Overcurrent Operation To Window Operation

    Operation and setting 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 operation (In) can be selected. 5.5.8 Factory setting and password protection Use this menu to activate the password protection, to change the...
  • Page 34 Operation and setting b) Changing the password c) Deactivating the password protection RCMA420_D00059_02_M_XXEN/06.2016...

  • Page 35: Restoring Factory Settings

    Operation and setting 5.5.9 Restoring factory settings 5.5.10 Device information query (Example) This function is used to query the software (1.xx) version. 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.

  • Page 36: History Memory Query

    Operation and setting 5.5.11 History memory query The history memory can be selected via the menu HiS. Use the Up and Down keys to view the next display. If Clr and M is flashing, the history memory can be cleared by pressing the Enter key. 5.6 Commissioning Prior to commissioning, check proper connection of the residual current monitor.

  • Page 37: Error Codes

    Appropriate action when error codes > 02 occur: Appropriate action: Carry out a reset. Reset the device to factory setting. After eliminating the fault, the error code will be automatically deleted. If the fault continues to exist, please contact the Bender Service. RCMA420_D00059_02_M_XXEN/06.2016...
  • Page 38 Operation and setting RCMA420_D00059_02_M_XXEN/06.2016...

  • Page 39: Technical Data

    6. Technical data 6.1 Data in tabular form ( )* = factory setting Insulation coordination acc. to IEC 60664-1/IEC 60664-3 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 Technical data Frequency range ............................0…2000 Hz Measuring range AC ............................0…1.5 A Measuring range DC ........................... 0…600 mA Relative uncertainty for f ≤ 2 Hz or ≥ 16 Hz ....................0…-35 % Relative uncertainty for f >2 Hz…<16 Hz ................... -35 %…+100 % Operating uncertainty ............................
  • Page 41 Technical data Switching elements Number of switching elements ..................... 2 x 1 changeover contact Operating principle ................N/C operation/N/O operation (N/C 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..DC-12 Rated operational voltage ............

  • Page 42: Standards, Approvals And Certifications

    Technical data Connection type......................push-wire terminals Connection properties: Rigid .......................... 0.2…2.5 mm ( AWG 24…14) Flexible without ferrules ..................0.75…2.5 mm ( AWG 19…14) Flexible with ferrules....................0.2…1.5 mm ( AWG 24…16) Stripping length ..............................10 mm Opening force................................50 N Test opening, diameter............................

  • Page 43: Ordering Information

    Technical data 6.3 Ordering information RCMA420-D-1 RCMA420-D-2 Response range Δ 10…500 mA 10…500 mA Rated frequency 0…2000 Hz 0…2000 Hz DC 70…300 V / DC 9.6…94 V / Supply voltage AC 42…460 Hz, AC 42…460 Hz, 16…72 V 70…300 V Art.
  • Page 44 Technical data Accessories RCMA420 Mounting clip for screw fixing (1 piece per device) .................. B 9806 0008 Measuring current transformers accessories Snap-on mounting for DIN rail: W20AB /W35AB ................... B 9808 0501 Snap-on mounting for DIN rail: W60AB ....................B 9808 0502...

  • Page 45: Index

    INDEX Adjustable parameters, list 23 Installation 19 Automatic self test 14 Installation and connection 19 Intended use 12 Connection of an additional cascaded measuring current transformer 21 K1/K2: assignment alarm category 23 Delay on release toff 16 LED Alarm 1 lights 22 Deleting the fault alarms 22 LED Alarm 2 lights 22 Device features 13...
  • Page 46 Support 6 Parameter query and setting, overview 25 Parameter setting Technical data 39 - Activating or deactivating the pass- Test button 22 word protection 33 Training courses 8 - Assigning alarm categories to the alarm relays 30 - Changeover from overcurrent opera- Window operation 33 tion to window operation 33 Wiring diagram 20...
  • 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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