janitza RCM 202-AB User Manual And Technical Data Download Page 9

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RCM 202-AB

RCM 202-AB

ATTENTION

Use of the device requires sufficient knowledge of the product as well as

knowledge about the connected devices and systems. Changes to the pre-

set values and control commands influence the evaluation behavior of the

residual current measurement device. Therefore changes to the commis-

sioning settings as well as the replacement of devices may only be carried

out upon agreement with Janitza electronics GmbH!
Changes carried out are to be documented in the system documentation!

Observe the user manual!

This user manual as well as the device-specific user manuals for connected

devices must be strictly observed.

NOTE

The RCM 202-AB is supplied as a component of a residual and operating

current monitoring system. Upon commissioning/delivery of a monitoring

system, all system-specific settings and control commands for the RCM

202-AB shall be parameterized and documented by Janitza electronics

GmbH.

Purpose - Intended use

The RCM 202-AB is a two-channel residual current measurement device for the

measurement and monitoring of main distribution boards up to a maximum residual

current of 20

With connected current measurement transformers (also current sensors), the RCM

202-AB is used for the measurement and monitoring of residual currents in TN and

TT systems (grounded AC systems).
With additional devices of the RCM series, display devices or devices for data cou-

pling to third-party systems, it forms a complete residual and operating current moni-

toring system. This monitoring system increases system and operational safety.

Faults or an increase in residual currents (usually creeping) are detected early on, for

example, thus allowing preventative maintenance. The external signal current circuits

used in the monitoring system shall be secondary current circuits.
Any use of the RCM 202-AB that differs from the description in this manual is consid-

ered improper use and may affect the protection provided by the device.

Summary of Contents for RCM 202-AB

Page 1: ...0 Janitza electronics GmbH Vor dem Polst ck 6 D 35633 Lahnau Germany Support Tel 49 6441 9642 22 E Mail info janitza de www janitza de www janitza de RESIDUAL CURRENT MEASUREMENT DEVICE RCM 202 AB Use...

Page 2: ...2 RCM 202 AB www janitza de...

Page 3: ...rmer monitoring 13 6 2 Parameterization options 13 6 2 1 Warning and alarm thresholds 14 6 2 2 Hysteresis 14 6 2 3 Delay times 15 6 3 Extreme value storage 16 6 4 Measured value memory historical data...

Page 4: ...2 1 Menu item Channel active 39 12 2 2 Menu item Transformer type 39 12 2 3 Menu item Monitoring active 40 12 2 4 Menu items Warning th I to warning th I AC50 40 12 2 5 Menu items Alarm th I to alarm...

Page 5: ...nd their remediation 54 14 1 1 The status LED is off 55 14 1 2 The status LED flashes green 55 14 1 3 The status LED lights up green 55 14 1 4 The status LED flashes yellow 56 14 1 5 The status LED fl...

Page 6: ...6 RCM 202 AB www janitza de...

Page 7: ...to the product Keep the user manual through the entire service life of the product so it is available for all users 1 2 Abbreviations used Abbrevia tion Meaning Modbus Communication protocol based on...

Page 8: ...tion NOTE This symbols and the word Note are used to make reference to additional information necessary for device use 2 2 General safety instructions The following safety instructions must be observe...

Page 9: ...all be parameterized and documented by Janitza electronics GmbH 3 Purpose Intended use The RCM 202 AB is a two channel residual current measurement device for the measurement and monitoring of main di...

Page 10: ...ort any dam age or missing content to the manufacturer sales partner 5 Overview of the RCM 202 AB 5 1 Device view Fig 1 RCM 202 AB device view 1 Connection for 2 current measurement transformers 2 Ope...

Page 11: ...CM 202 AB 11 5 2 Device dimensions Fig 2 Device dimensions in mm 5 3 Labeling Various labels are applied on the RCM 202 AB with the following information Manufacturer Serial number and item number Tec...

Page 12: ...torage with time stamp Parameterizable alarm threshold for alarm message per channel Parameterizable warning threshold e g prewarning for warning message per channel Parameterizable delay times Delay...

Page 13: ...o current measurement transform ers at the same time For each active channel the RCM 202 AB continuously checks the connected transformer for short circuit or wire breaks If a short circuit or wire br...

Page 14: ...arm thresholds Parameterization The digital output reacts to warning and alarm thresholds When the warning and alarm thresholds are exceeded the messages can be called up via Modbus after the delay ti...

Page 15: ...of a delay time for warning and alarm messages Messages are not taken into consideration during the parameterized delay time tv They are only displayed and updated in Modbus if the current path still...

Page 16: ...alue storage The RCM 202 AB stores the minimum and maximum values of residual current meas urement for each current channel with a time stamp The stored extreme values can be displayed by channel on t...

Page 17: ...nterval Total current residual current type B Total current up to 2 kHz residual current type B Direct current Alternating current with frequencies up to 2 kHz residual current type A Alternating curr...

Page 18: ...d for connections via the Modbus interface RS485 For a sufficient shielding effect the shielding must be connected extensively to one end of a cable with a grounded housing or cabinet parts Connection...

Page 19: ...e value of the measured total current Both analogue out puts require a separate power supply DC 12 24 V In the configuration menu of the RCM 202 AB the measuring range total current can be scaled In s...

Page 20: ...20 RCM 202 AB www janitza de 20 RCM 202 AB 7 Connection assignment Fig 8 Circuit diagram of the RCM 202 AB...

Page 21: ...ection 1 I1 K Current measurement transformer 1 contact k wire color1 white 2 I1 L Current measurement transformer 1 contact l wire color1 brown 3 I2 K Current measurement transformer 2 contact k wire...

Page 22: ...on example RCM 202 AB in stand alone mode Fig 9 Connection of two relays to the digital outputs 8 2 Application example analog outputs interface 4 20 mA Fig 10 Connection of a display device and a PLC...

Page 23: ...02 AB 23 8 3 Application example analog outputs and UMG 96RM E Janitza power supply unit art no 16 05 012 required RCM 202 AB 23 8 3 Application example analog outputs and UMG 96RM E Janitza power sup...

Page 24: ...de 24 RCM 202 AB 8 4 Application examples via Modbus RS485 interface Fig 11 Application example PLC Fig 12 Application example Measurement devices Fig 13 Application example Modbus TCP Fig 14 Applica...

Page 25: ...ons the installation in the Modbus segment the serial number the Modbus address device address as well as the designation of the current measurement transformer must be noted in the system documentati...

Page 26: ...transformer to the plug of the respective current measurement input I1 and I2 When doing so observe the connec tions K and L see also Tab 3 on page 21 Connect the analog and digital outputs if necess...

Page 27: ...s of the RCM 202 AB accord ing to the system to be monitored and depending on the circuit of its connec tions Change them if necessary 10 Display and operating elements 10 1 Display and keys Fig 15 Fr...

Page 28: ...e than 10 minutes If no key is pressed for more than 120 minutes the display shuts off The display or the backlight of the display are reactivated as soon as a key is pressed Response messages are dis...

Page 29: ...messages are generated Actuation 3 s no function Menu Navigation in the submenus and between the menu items Parameterization mode Setting the values Down Normal operation No function Menu Navigation...

Page 30: ...h number with The password is a 6 digit number sequence The factory setting is 000000 Input and confirmation of the correct number sequence The symbol on the display changes to Parameterization mode i...

Page 31: ...ng and changing values in the menu ATTENTION Changes to the settings can be safety relevant Changes may only be made by an authorized electrician In case of doubt contact Janitza electronics GmbH NOTE...

Page 32: ...displayed with a dark background Press The submenu Channel 1 is opened Use or to select the menu item Response delay The Re sponse delay menu item is displayed with a dark background The set value e g...

Page 33: ...ng steps for checking the monitoring function NOTE The performance of the test is saved with the time stamp and can be dis played in the menu 6 Functional test Initial situation The main screen is sho...

Page 34: ...ve Transformer type DW18 Monitoring active Warning th I 3 00 A Change password Warning th I DC 3 00 A Warning th I AC2k 3 00 A Warning th I AC20k 3 00 A Warning th I AC50 3 00 A Warning th I 2k 3 00 A...

Page 35: ...vice Transformer analysis Power frequency 50Hz Current value AC AC2k 8 Factory setting load 9 Information JANITZA electronics GmbH RCM 202 AB Rev 1 1 SN 6 Firmware 1 0 0 1 P N 080334 5 Min max values...

Page 36: ...Shown on the dis play Set values control com mands Remark LCD contrast 74 50 85 In steps of 1 12 1 2 Menu item Change date time Fig 18 Change date time submenu Setting option Change the date and time...

Page 37: ...u item Parameter release NOTE It is only possible to view and change the set values and control commands in parameterization mode The values in the submenus 1 Service 4 Measured value memory 9 Informa...

Page 38: ...word 0 0 0 0 0 0 PW accepted 12 2 2 Channel parameter NOTE Parameterization mode must be released in order to display the menu 2 Channel parameter Fig 20 2 Channel parameter menu The menu items remain...

Page 39: ...Monitoring active Warning th I 3 00 A Channel 2 Channel active Transformer type DW18 Monitoring active Warning th I 3 00 A Warning th I DC 3 00 A Warning th I AC2k 3 00 A Warning th I AC20k 3 00 A Wa...

Page 40: ...y Modbus if parameterized digital output 1 and or 2 Shown on the dis play Set values control com mands Remark Warning th I 3 00 A 0 03 0 99 steps of 0 01 1 00 4 90 steps of 0 1 5 00 20 00 steps of 1 T...

Page 41: ...ut 1 and or 2 Shown on the dis play Set values control com mands Remark Alarm th I 5 00 A 0 03 0 99 steps of 0 01 1 00 4 90 steps of 0 1 5 00 20 00 steps of 1 Total current with frequen cies up to 20...

Page 42: ...below the message that the alarm threshold was exceeded ends display Modbus if parameterized digital output 1 and or 2 Shown on the dis play Set values control com mands Remark Hysteresis 0 00 A 0 00...

Page 43: ...ith frequencies up to 20 kHz Warning th I AC50 Exceedance of the warning threshold for fundamental oscillation Warning th I 2k Exceedance of the warning threshold for total current with frequencies up...

Page 44: ...anual Data and settings for the Modbus connec tion must be strictly observed Fig 22 3 Communication menu The menu items make it possible to set the following Communication interface RS485 Modbus 12 3...

Page 45: ...ay Set values control com mands Remark Baud rate 19200 9600 19200 38400 57600 115200 12 4 Menu 4 Measured value memory Fig 23 4 Measured value memory menu The menu items make it possible to set the fo...

Page 46: ...There is no additional confirmation prompt Setting option Deletion of the measured value memory without password Shown on the dis play Remark Delete record Press to delete the stored measured values a...

Page 47: ...m Channel 1 and 5 Min max values 2 menu item Channel 2 5 Min max values 1 Max value 0 02 A Max value time 24 02 2018 14 08 PM 5 Min max values 2 Max value 0 02 A Max value time 24 02 2018 14 08 PM Min...

Page 48: ...Time stamp of the minimum value Delete values Values deleted Press to delete the stored extreme values of the dis played measurement channel 12 6 Menu 6 Functional test Fig 26 6 Functional test menu...

Page 49: ...y Remark Last test dd mm yyyy HH MM The time stamp is set after the test for the monitoring func tion of RCM 202 AB is formed by pressing dd day mm month yyyy year HH hour MM minute 12 7 Menu 7 Servic...

Page 50: ...e connected current measurement transformer Shown on the dis play Set values control com mands Remark Transformer ratio 700 600 1000 In steps of 10 Menu item Execute ATTENTION Do not perform the trans...

Page 51: ...AC AC50 AC2k Alternating current with fre quencies up to 2 kHz AC20k Alternating current with fre quencies up to 20 kHz AC50 Fundamental oscillation 12 8 Menu 8 Factory setting Menu item Load ATTENTI...

Page 52: ...number P N of the RCM 202 AB 12 10 Menu 10 Restart By selecting this menu with the RCM 202 AB is restarted In this way for example it is possible to delete error messages on the display that were not...

Page 53: ...t messages and erroneous functions are displayed by the LED and text mes sages of the RCM 202 AB A visual inspection is to be performed in the course of the maintenance and inspection cycle for statio...

Page 54: ...as be connected to the building control system 14 1 Errors and their remediation ATTENTION If a fault cannot be eliminated please contact the Service department NOTE If multiple possible causes are in...

Page 55: ...14 2 on page 58 14 1 2 The status LED flashes green Text message I1 and I2 Cause Device initialization Remediation NOTE The initialization procedure can take multiple seconds Wait until the initializa...

Page 56: ...ove the defective device Text message Alarm threshold err Cause Residual current in the monitored system Residual current set alarm threshold Remediation Localize the defective consumer a Switch off t...

Page 57: ...is an electrically conductive connection replace the RCM 202 AB After completing the work reconnect the plug of the current measurement transformer to the RCM 202 AB Make sure that the plug is firmly...

Page 58: ...he removal and reinstallation 14 2 1 Removal of a defective RCM 202 AB Disconnect the plug from the power supply N L The power supply for the RCM 202 AB is interrupted Disconnect the connector for the...

Page 59: ...operating status of the monitored system If necessary configure the RCM 202 AB according to the system to be mon itored and depending on the circuit of its connections 15 Warranty and liability The ge...

Page 60: ...xternal back up fuse for the power supply Circuit breaker 1 pole 3 A AC 230 V Operating mode Continuous operation Power consumption internal consumption 8 W Isolation coordination according to IEC 606...

Page 61: ...ingle wires 0 75 to 1 5 mm max 10 m Shielded cable 0 75 to 1 5 mm max 10 m Displays messages and memory Full graphics display LCD 128 x 64 pixel with backlight Status LED 3 color Controls 3 keys Menu...

Page 62: ...vices Part 1 General requirements IEC EN 61010 1 Part 2 030 Particular requirements for equipment having testing or measuring cir cuits IEC EN 61010 2 030 Electromagnetic compatibility EMC Immunity fr...

Page 63: ...ammability rating UL94V 0 Weight Approx 170 g 0 375 lb Connection type cable Series terminal copper Connection cross section single wire finely stranded 0 2 4 mm2 0 2 1 5 mm2 AWG 24 15 19 2 RCM 202 AB...

Page 64: ...labels on the transformer connections S1 k S2 l NOTE A cable length of 10 m between the transformer and the measurement de vice may not be exceeded Observe the maximum cable resistance of 2 Ohm Recom...

Page 65: ...700 1 20000 CT AC RCM 80N 80 700 1 20000 CT AC RCM 110N 110 700 1 20000 CT AC RCM 140N 140 700 1 20000 CT AC RCM 210N 210 700 1 20000 CT AC RCM A110N 110 700 1 20000 CT AC RCM A150N 150 700 1 20000 C...

Page 66: ...66 RCM 202 AB www janitza de...

Page 67: ...67 www janitza de RCM 202 AB...

Page 68: ...18000 CT AC RCM 35N 35 700 1 20000 CT AC RCM 80N 80 700 1 20000 CT AC RCM 110N 110 700 1 20000 CT AC RCM 140N 140 700 1 20000 CT AC RCM 210N 210 700 1 20000 CT AC RCM A110N 110 700 1 20000 CT AC RCM...

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