- 4G LTE Cat 1
- Mobile network, 2G fallback
- RS485
- Modbus RTU
- 2
- Digital inputs
- 9 to 24 VDC
- Supply voltage
Overview
Where it works
GWU-4 is a DIN-rail communication module. It reads the devices on an RS485 Modbus RTU bus, sends their data to the EIM center over 4G LTE Cat 1 or 2G, and writes parameters received from the EIM center into their Modbus registers. It has two digital inputs for tamper contacts and switches and runs on 9 to 24 VDC.
Mounting: 35 mm DIN rail (IEC 60715)
- Full integration with the GridBit system for energy monitoring and management (EIM)
- Reading data from, configuring and controlling the other devices on the Modbus bus remotely over 4G LTE
- Monitoring the state of its two digital inputs, for example tamper contacts and switches
Datasheet
Technical data
Power supply
- Supply voltage
- 9 to 24 VDC
- Consumption
- max. 150 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
Wireless communication
- Mobile network
- 4G LTE Cat 1 (FDD/TDD), 2G (GSM/GPRS/EDGE)
- Wi-Fi
- 2.4 GHz, IEEE 802.11 b/g/n, up to 150 Mbpsoptional
- IoT application protocol
- MQTT
- Message format
- JSON
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 mobile operator
- COMOnConnected to the EIM center
- DI1OnDigital input 1 closed
- DI2OnDigital input 2 closed
- MBOnA device on the Modbus bus is missing or faulty
Installation
Dimensions and connection
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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