Operating Manual RCMA420 Residual current monitor for monitoring AC, DC and pulsed DC currents in TN and TT systems Software version D242 V1.2x Power in electrical safety TGH1411en/03.
Dipl.-Ing. W. Bender GmbH & Co. KG Londorfer Str. 65 • 35305 Grünberg • Germany Postfach 1161 • 35301 Grünberg • Germany Tel.: +49 6401 807-0 Fax: +49 6401 807-259 E-Mail: info@bender-de.com Web: http://www.bender-de.com © Dipl.-Ing. W. Bender GmbH & Co. KG All rights reserved. Reprinting only with permission of the publisher.
Table of Contents 1. Effective use of this manual ........................................................................... 5 1.1 1.2 1.3 Notes for the user ............................................................................................. 5 Intended use ...................................................................................................... 5 Information about factory setting ............................................................. 6 2. Safety information .................
Table of Contents 4. Installation and connection ......................................................................... 13 5. Operation and setting .................................................................................. 15 5.1 5.2 5.3 5.4 5.5 5.5.1 5.5.2 5.5.3 5.5.4 5.5.5 5.5.6 5.5.7 5.5.8 5.5.9 5.5.10 5.5.11 5.6 5.7 Display elements in use .............................................................................. 15 Function of the operating elements ....................................
1. Effective use of this manual 1.1 Notes for the user This manual is intended for experts in electrical engineering and electronics! In order to make it easier for you to find specific text passages or references in this manual and for reasons of comprehensibility, important information is emphasized by symbols. The meaning of these symbols is explained below: Information calling attention to hazards are marked with this warning symbol.
Effective use of this manual 1.3 Information about factory setting Page 30 provides a summary of all factory settings. If you want to reset the residual current monitor to factory settings, refer to page 29. 6 TGH1411en/03.
2. Safety information 2.1 Safety information In addition to this data sheet, the documentation of the device includes a sheet entitled "Important safety instructions for BENDER products“. 2.2 Work activities on electrical installations All work activities necessary for installation, commissioning or work activities during operation of electrical devices or systems are to be carried out by adequately skilled personnel.
Safety information 8 TGH1411en/03.
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.
Function The device function can be tested using the TEST button. 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).
Function ice. 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. RL in the out menu can be used to limit the number of these changeover processes. As soon as the preset number of switching cycles is exceeded, the fault memory will come on and an activated alarm remains stored. 3.2.
Function 3.2.12 Residual current monitoring in window discriminator mode Change the measuring principle by selecting the window mode (SEt / In). In the window discriminator mode, the threshold values I1 and I2 represent the upper and the lower value. If the measured value is not within this area, an alarm is initiated by the device. See page 27. 3.2.13 Password protection (on, OFF) When the password protection is activated (on), settings are only possible after entering the correct password (0...999). 3.
4. Installation and connection Ensure safe isolation from supply in the installation area. Observe the installation rules for live working. Dimension diagram, drawing for screw mounting, push-wire terminal connection Zubehör/ Accessory ,5 47 ,1 36 mm 2 45 67,5 90 mm 100 mm 31 116 mm ,5 70 1 3 The front plate cover is easy to open at the lower part marked by an arrow. TGH1411en/03.
Installation and connection 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 beyond the enclosure. Then fix the device using two M4 screws. 2. Wiring Connect the device according the wiring diagram. T/R A1 A2 + - k GND l T b a 1 WX... a k l + T b 1 2 3 4 GND W...
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. Display elements in use Element RL I2 I1 Function Reload function with memory = off (L = I.
Operation and setting 5.2 Function of the operating elements Device front Element Function ON, green AL1, AL2 ON T 16 AL1 AL2 R MENU LED lighting continuously: Power On Flashing LED: System fault or connection monitoring fault LED Alarm 1 lights (yellow): Response value 1 reached (IΔn1) LED Alarm 2 lights (yellow): Response value 2 reached (IΔn2) 13 mA 13 mA flow through the measuring current transformer, Fault memory active M T, Test button (> 1.
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. This is done by activation or deactivation of the respective function.
Operation and setting Menu Sub Menu Menu item ActivaAdjustable parameter tion t t on 1 - (timing check) t on 2 - Response delay K2 t - Starting delay t off - Delay on release K1/K2 HI Selectable parameters: High, window function, low off Parameter setting via password I 12 Set (device control) FAC - Restore factory settings SYS - Function blocked - Display hard / software version - History memory for the first alarm value, erasable InF HiS Response delay K1 Clr 5.
Operation and setting 5.5 Display in menu mode 5.5.1 Menu item AL out t SEt Parameter query and setting: overview Adjustable parameter Response values query and setting: – Residual current I2 (IΔn2) (AL2) – Residual current I1 (IΔn1) (AL1) – Hysteresis of the response values: % Hys Configuration of the fault memory and the alarm relays: – Activate/deactivate the fault memory or assign continuous mode (on/off/con) – Select N/O operation (n.o.) or N/C operation (n.c.
Operation and setting Menu structure t >1,5 s t > 1,5 s t < 1,5 s AL out t SEt InF HiS ESC t < 1,5 s t > 1,5 s ESC 20 TGH1411en/03.
Operation and setting Parameter settings An example is given here on how to change the alarm response value I1 (IΔn1). It is presumed that the option overcurrent (HI) has been selected in the SEt/I 12 menu (factory setting). Proceed as follows: 1. Press the MENU/Enter key for more than 1.5 seconds. The flashing short symbol AL appears on the display. 2. Confirm with Enter. The parameter response value > I2 flashes, in addition the associated overcurrent value > 30 mA appears. 3.
Operation and setting 5.5.3 Response value setting for overcurrent: - Response value I2 (overcurrent IΔn2) - Response value I1 (overcurrent IΔn1) - Hysteresis (Hys) of the response values IΔn1, IΔn2 Increasing the response value I2 (alarm overcurrent) Increasing the response value I1 (prewarning overcurrent). 1x Setting the hysteresis of the response value 2x 22 TGH1411en/03.
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.) 1x Setting the number of reload cycles 3x 2x >1,5 s TGH1411en/03.
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. Alarm relay K1: Deactivating the category device error 4x 3x >1,5 s Alarm relay K1: Deactivating the category response value I1 4x 1x 3x >1,5 s 24 TGH1411en/03.
Operation and setting Alarm relay K1: Activating the category response value I2 4x 2x 3x >1,5 s Alarm relay K1: Deactivating the category "Alarm by device test" 4x 3x 3x >1,5 s 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 respective alarm LED (AL1/AL2)! TGH1411en/03.
Operation and setting 5.5.6 Set the time delays The following delays can be set: Response delay ton1 (0...10 s) for K1, and ton2 (0...10 s) for K2 Starting delay t (0...10 s) when the device is being started Common delay on release toff (0...99 s) for K1, K2. The setting toff is only relevant when the fault memory M is deactivated. The operating steps for the setting of the response delay ton1 and the starting delay t are illustrated by way of example.
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. 2x >1,5 s 5.5.8 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.
Operation and setting b) Changing the password 1x 2x >1,5 s c) Deactivating the password protection 1x 2x >1,5 s 28 TGH1411en/03.
Operation and setting 5.5.9 Restoring factory settings 2x .... 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. .... .... 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.
Operation and setting 5.6 Commissioning Prior to commissioning, check proper connection of the residual current monitor. 5.7 Factory setting Response value overcurrent I1 (prewarning) Response value overcurrent I2 (alarm) Hysteresis: Fault memory M: Operating mode K1/K2 Starting delay: Response delay: Delay on release: Password: 30 15 mA (50 % of I2) 30 mA 15 % activated (on) N/C operation (n.c.) t = 0.5 s ton1 = 1 s ton2 = 0 s toff = 1 s 0, deactivated (Off) TGH1411en/03.
6. Technical data 6.1 Data in tabular form ( )* = factory setting Insulation coordination acc. to IEC 60664-1/IEC 60664-3 Rated insulation voltage ....................................................................................................................................... 250 V Rated impulse voltage/pollution degree........................................................................................................ 2.5 kV / III Protective separation (reinforced insulation) between:.............
Technical data Rated residual operating current IΔn2 (Alarm, AL2) ............................................................... 10...500 mA (30 mA)* Hysteresis .......................................................................................................................................... 10...25 % (15%)* Specified time Starting delay t ...................................................................................................................................... 0...10 s (0.
Technical data Environment/EMC EMC ................................................................................................................................................................. IEC 62020 Operating temperature ......................................................................................................................... -25 ºC...+55 ºC Classification of climatic conditions IEC 60721 Stationary use (IEC 60721-3-3) ........................................................
Technical data DIN rail mounting acc. to................................................................................................................................. IEC 60715 Screw fixing ......................................................................................................................... 2 x M4 with mounting clip Software version .......................................................................................................................................... D242 V1.
Technical data 6.3 Ordering information RCMA420-D-1 RCMA420-D-2 Response range IΔn 10...500 mA 10...500 mA Rated frequency 0...2000 Hz 0...2000 Hz DC 9.6...94 V / AC 42...460 Hz, 16...72 V DC 70...300 V / AC 42...460 Hz, 70...300 V B 7404 3001 B 9404 3001 B 7404 3002 B 9404 3002 Supply voltage Us* Art. No. (B 7... = push-wire terminal) *Absolute values of the voltage range External measuring current transformers Type Inside diameter (mm) Art. No.
Technical data 6.4 Error codes Should, contrary to all expectations, a device error occur, error codes will appear on the display. Typical error codes are described below: Error code Meaning: E.01 Fault CT connection monitoring Appropriate action: Check CT connection for short-circuit or interruption. After eliminating the fault, the error code will be automatically deleted. E.02 Fault CT connection monitoring during manual self test.
INDEX A K Adjustable parameters, list 17 Automatic self test 10 K1/K2: assignment alarm category 17 C LED Alarm 1 lights 16 LED Alarm 2 lights 16 L Connection of an additional cascaded measuring current transformer 15 M ENTER key 16 Error codes 36 Example of parameter setting 21 Manual self test 10 Manual, target group 5 Menu - AL (response values) 17 - HiS (history memory for the first alarm value) 18 - InF (hard and software version) 18 - out (output control) 17 - Set (device control 18 - t (timi
P T Parameter query and setting, overview 19 Parameter setting - Activating or deactivating the password protection 27 - Assigning alarm categories to the alarm relays 24 - Changeover from overcurrent operation to window operation 27 - Set response values 22 - Set the time delays 26 Password protection 12 Technical data 31 Test button 16 W Window operation 27 Wiring diagram 14 Work activities on electrical installations 7 R Reset button 16 Residual current monitoring in window discriminator mode 12 Res
Dipl.-Ing. W. Bender GmbH & Co. KG Londorfer Str. 65 • 35305 Grünberg • Germany Postfach 1161 • 35301 Grünberg • Germany Tel.: +49 6401 807-0 Fax: +49 6401 807-259 E-Mail: info@bender-de.com Web: http://www.bender-de.
