- Mobile network
- 2G GSM/GPRS
- Modbus RTU
- RS485
- Digital inputs
- 2
- Supply voltage
- 9 to 36 VDC
Overview
Where it works
GWU-2 is a DIN-rail communication module. It reads the devices on an RS485 Modbus RTU bus and sends their data to the monitoring platform over GSM (GPRS), and it can also write parameters received from the monitoring platform into the Modbus registers of the connected devices. It has two digital inputs for tampers, switches and similar contacts, and runs on 9 to 36 VDC.
Mounting: 35 mm DIN rail (IEC 60715)
- Integration with the GridBit monitoring platform
- Data retrieval, remote configuration and control of the devices on the Modbus bus over GSM 2G
- Monitoring the state of the two digital inputs, for tampers, switches and similar contacts
Datasheet
Technical data
Power supply
- Supply voltage
- 9 to 36 VDC
- Consumption
- max. 50 mA
Digital inputs
- Number
- 2
- Type
- IEC 61131-2 Type 1
Modbus RTU
- Interface
- RS485
- Protocol
- Modbus RTU
- Baud rate
- 9600, 19200, 38400, 57600default 9600
- Parity
- 8N1, 8E1, 8O1, 8N2default 8N1
Mobile network
- Standard
- 2G GSM/GPRS
- Frequency bands
- GSM 850 MHz, EGSM 900 MHz, DCS 1800 MHz, PCS 1900 MHz
Environment
- Operating temperature
- -20 to 60 °C
- Storage temperature
- -20 to 80 °C
- Relative humidity
- below 95 %, non-condensing
Status LEDs
- POWOnInput voltage present
- COMBlinkingConnecting to the GSM operator
- COMOnConnected to the monitoring platform
- Di1OnDigital input 1 closed
- Di2OnDigital input 2 closed
Installation
Dimensions and connection
Systems
Used in
Electrical infrastructure digitalization
GridBit MV/LV transformer monitoring
Temperature, load and alarms of the MV/LV transformer in a secondary substation, in real time. Sensors and a gateway go into the existing substation without changing the primary equipment.
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Electrical infrastructure digitalization
GridBit LV switchgear monitoring
Current, voltage, power and power quality on every phase of the low-voltage board, and the state of each outgoing feeder, fuse and protection, from DIN-rail Modbus modules and one gateway.
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Transport, warranty and maintenance
- Transport and storage
- Protect the module from shocks and avoid extreme conditions. Store it in the original packaging.
- Warranty
- Two years from the date of manufacture against manufacturing defects. Modifications to the product after the publication date of its documentation release the manufacturer from liability. The manufacturer is not responsible for typographical or other errors in the documentation.
- Maintenance
- Under normal conditions the module needs no maintenance. Light dirt comes off with a dry or slightly damp cloth; for heavier dirt use non-aggressive cleaning products. Always disconnect the power supply first, keep liquids out of the housing and reconnect the power only when the module is completely dry.
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