CIRCUTOR, SA reserves the right to make modifications to the device or the unit specifications set out in this instruction manual without prior notice. CIRCUTOR, SA on its web site, supplies its customers with the latest versions of the device specifica- tions and the most updated manuals.
RGU-100B REVISION LOG Table 1: Revision log� Date Revision Description 01/20 M256B01-03-19A First Version Changes in the following sections: 09/20 M256B01-03-20A SYMBOLS Table 2: Symbols� Symbol Description In accordance with the relevant European directive. Device covered by European Directive 2012/19/EC. At the end of its useful life, do not discard of the device in a household refuse bin.
CIRCUTOR's after-sales service. 2 - PRODUCT DESCRIPTION The RGU-100B is a type-B earth leakage protection and monitoring device (IEC 60755), compatible with the earth leakage transformers in the WGB product range, and includes adjustable prealarm leakage sensitivity and integrated RS-485 communications.
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RGU-100B The transformers have: - 6 LEDs providing information about the transformer's status. - 2 RJ45 connection and power supply ports. Instruction Manual...
The RGU-100B device must be installed by authorised and qualified staff. The power supply plug must be disconnected and measurement systems switched off before handling, altering the connections or replacing the device.
Note: The 72 x 72 mm panel adapter is a separately sold accessory. CIRCUTOR has a panel adapter for RGU-100B devices so that it can be installed on 72 x 72 mm panels. illustrates how the panel adapter is connected to an RGU-100B.
68 mm 68 mm Figure 2: Cut in the panel� 3�4�- DEVICE TERMINALS Figure 3: Terminals of the RGU-100B: Upper - Lower� Table 4: List of RGU-100B terminals� Device terminals 9: A1 +, Power supply 21: TRIP, Digital input for external trigger...
RGU-100B 3�5�- WGB TRANSFORMERS When the device is on, its terminals, opening covers or removing elements may ex- pose the user to parts that are hazardous to touch. Do not use the device until it is fully installed. The transformer is designed for wall-mounting or DIN-rail assembly with an accessory for installa- tion.
RGU-100B 3�5�2� INSTALLATION ON A DIN RAIL For installation on a DIN rail, a support bracket is provided with the device, see Figure 6 Figure 6: Support bracket� The steps to ensure proper installation are: 1�- Attach the bracket to the DIN rail. Be sure the side marked FRONT is visible. The bracket can be in- stalled in 2 ways, depending on how the WGB is to be positioned, Figure 7.
Figure 8: To remove the bracket use a screwdriver� 3�5�3�- TRANSFORMER TERMINALS Figure 9: WGB terminals� Table 5: List of WGB terminals� Device terminals 1, 2 Connection terminals to the RGU-100B 3�5�4�- TRANSFORMER LEDs WGB transformers have 6 indicating LEDs. Power Supply Channel TRIP...
3�7�- INSTALLATION CONNECTIONS All active conductors that supply the loads or part of the installation where protection is required must pass through the associated WGB transformers. Connect the WGB transformer to the RGU-100B using the RJ45 cable, Figure 12 RGU-100B...
RGU-100B 4.- OPERATION 4�1�- LED INDICATORS The RGU-100B device has 2 LEDs: - CPU, white color, indicates that the device is on. - ALARM, Table 7: ALARM LED� Description Red blinking: Indicates that a prealarm has been generated. ALARM Red ON: Indicates that a trip has been generated.
Data area Unit and status areas Figure 15: RGU-100B display areas� The data area, which displays all the values measured by the device. The unit and device status area, which displays the different statuses, units and device in-...
RGU-100B 4�3�- KEYBOARD FUNCTIONS The RGU-100B has 3 keys to browse through the different screens and program the device. Function of the keys ( Table 9 Table 9: Function of the keys on display screens� Short keystroke Long keystroke (3s)
If no key is pressed for 60 seconds, the device goes to the main display screen without updating the date and time. The display screen shows the icon , indicating that the RGU-100B clock has not been configured. shows the year setup screen.
RGU-100B Figure 19: Clock setup: Day� Press key to increase the day value, and key to reduce it. Press key to confirm the value and skip to the hour configuration screen, Figure 20 Figure 20: Clock setup: Time� Press key to increase the hour value, and key to reduce it.
RGU-100B The device has detected more WGB transformers than the installation can accept. The device has detected WGB transformers that are not registered in the installation. The new installation has to be saved; this is carried out accessing the setup menu, see “6.5.1.- SAVE INSTALLATION”.
RGU-100B Access the event menu by pressing the key for > 3s. (See "5.7.- EVENT MENU" Note: If no key is pressed for 1 minute, the device goes to Channel 1's display screen. 5�4�- TRIP DISPLAY SCREENS If a trip has been generated in the channel, the display screen will be displayed in red, the Alarm LED will be lit in red and the last cycle current that tripped the relay will be displayed.
RGU-100B 5�5�- TEST SCREEN It is possible to carry out an individual test on the channel to verify the proper functioning of the relay. To do this, press key for > 3s while channel 1's screen is being displayed. is displayed. And the Alarm LED is lit in...
RGU-100B 5�6 �- DIRECT SETTINGS From the channel's display screen, we can configure its trip current and delay. To do this, press key for > 3s while the channel's screen is displayed. Note: In we can see the configuration tree.
To enter the event menu, we must display the Events screen and press the key for > 3s. The device displays the last 10 events generated. The RGU-100B saves 4 different types of events: TRIP, trip of a channel's relay. ALA, prealarm activated.
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RGU-100B Event 1: Prealarm Event 1: Prealarm Event 1: Prealarm Year Time Month and Day Event 5: Test Event 5: Test Event 5: Test Year Time Month and Day Event 8: WGB error Event 8: WGB error Event 8: WGB error...
RGU-100B 5�8�- OTHER SCREENS While the RGU-100B is operating different screens can appear, indicating: Communication with the WGB has been lost. Instruction Manual...
RGU-100B 6.- CONFIGURATION To enter the setup menu, we must display the Events screen and press the key for > 3s. The RGU-100B organises the device's configuration of the equipment into 5 menus, Figure 27 > 3 s. Access password >...
RGU-100B Figure 28: Password Screen� Use keys to modify the digit's value. Press key keys to skip the digit. To validate the value, hold down the key for > 3s; if the password is correct, in the bottom left of...
RGU-100B 6�1�2�- PERIPHERAL NUMBER This screen enables peripheral number configuration. Use keys to modify the value. Minimum value: 1. Maximum value: 247. To skip to the next programming point, press once the key Hold down the key for > 3s, to validate the data and exit the programming.
RGU-100B 6�2�- PREALARM shows the initial screen of the prealarm menu. Press the key for > 3s, to access the Figure 30 menu. Figure 30: Prealarm menu� In this menu we can configure the device's prealarm. 6�2�1�- PREALARM CURRENT This screen is used to configure the current at which the prealarm will be activated according to the % of the relay's trip current.
RGU-100B AUTO, prealarm activated with latch deactivated; if the condition for the prealarm disappears, the prealarm is disconnected. MANU, prealarm activated with latch activated; the prealarm disappears when resetting via the keyboard or communications (see "7.3.3.- TRIPPING DUE TO TEST OR COMMUNICATIONS").
Figure 33: Installation menu� 6�5�1�- SAVE INSTALLATION If the installation of the RGU-100B has been modified, i.e. the WGB transformer has been replaced (see ), the following screen appears to save the current configuration. "3.7.- INSTALLATION CONNECTIONS" > 3s To save the installation, with a long keystroke (>3s), press...
RGU-100B 7.- RS-485 COMMUNICATIONS The RGU-100B has an RS-485 communications port. The device is equipped with the MODBUS RTU communication protocol as standard. 7�1�- CONNECTIONS The RS-485 cable must be wired using twisted pair cable with mesh shield (minimum 3 wires), with a maximum distance of 1200 meters between the RGU-100B and the master unit.
7�3�1�- VARIABLES OF THE RGU-100B AND INSTALLATION Function 0x02 is used for these variables. Functions 0x01 and 0x05 are used for the variable Save the new installation. Table 10: Modbus Memory Map: RGU-100B - INSTALLATION (Table 1)� RGU-100B - INSTALLATION Parameter...
RGU-100B Table 13: Status of RGU-100B� Possible statuses of RGU-100B Value Description Device in startup process Device idle Device tripped due to activation of the TRIP input 7�3�2�- CHANNEL VARIABLES Function 0x04: reading of registers, is used for these variables Table 14: Modbus Memory Map: Channel variables�...
RGU-100B Table 18 (Continued)� Modbus Memory Map: Events� Parameter Format Address Function Value Type of event: 0: Tripping of the channel's relay Unit [16] 1388 1: Prealarm activated 2:Individual test 3: Error in transformer Unit [16] 1389-138A Event date (Epoch format)
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RGU-100B Table 20 (Continued): Modbus Memory Map: Relay curve or delay table� Relay curve or delay table� Parameter Format Address Value 1000 ms - 0 Value 9 Unit [16] 0x04 100C Value 10 Unit [16] 0x04 100D 3000 ms - 0...
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RGU-100B 7�3�5�3�- Clock setup Table 23: Modbus Memory Map: Clock setup� Clock setup Configuration variable Format Address Valid data range Default value Clock setup Unit [32] 283C - 283D Date and time are given in Epoch format 7�3�5�4�- Password Table 24: Modbus Memory Map: Password�...
RGU-100B 8.- TECHNICAL FEATURES 8�1�- RGU-100B AC Power supply Rated voltage 230 V ~ ± 15% Frequency 50 ... 60 Hz Consumption 7.5 VA Installation category CAT III 300V Monitoring features Rated frequency of the monitored circuit DC: 0 Hz - AC: 50 Hz - 1 kHz Rated residual non-operating current 0.5 Idn...
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Self-extinguishing V0 plastic Standards Low-voltage switchgear� Part 2: Automatic switch protection IEC 60947-2-M General safety requirements for residual current operated protective devices IEC 60755 Measurement conditions for Type B waveform specified in IEC 60755. 52.5 Figure 35: Dimensions of RGU-100B� Instruction Manual...
Ø 110.5 mm Weight 235 g. 355 g. 555 g. 750 g. Enclosure Self-extinguishing V0 plastic Cable from WGB to RGU-100B Connector RJ45 standard Cable cross-section 4 x 2 x AWG24/7 Temperature range -20 ºC ... +70 ºC Length 1.5 m Length of the cable included with the WGB.
RGU-100B 9.- MAINTENANCE AND TECHNICAL SERVICE In the case of any query in relation to device operation or malfunction, please contact the CIRCUTOR, SA Technical Support Service. Technical Assistance Service Vial Sant Jordi, s/n, 08232 - Viladecavalls (Barcelona) Tel: 902 449 459 ( España) / +34 937 452 919 (outside of Spain) email: sat@circutor.com...
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