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Voltage measurement transducer MB-3U-1
3F voltage measurement transducer with MODBUS RTU output.
MB-3U-1 transducer is designed to measure the voltage and to transmit the data via RS-485 port using MODBUS RTU protocol.
MB-3U-1 transducer is designed to measure the voltage and to transmit the data via RS-485 port using MODBUS RTU protocol.
Functioning
The module continuously measures the values of the input alternating voltage and input direct voltage (three-phase alternating current voltage or voltage circuits of direct current). Readout of recorded voltage and setting of all communication parameters are carried out through RS-485 port using the MODBUS RTU communication protocol. Power up is indicated by a green LED U light. Valid data exchange between the module and the second device is indicated by a yellow LED Tx light.
The transducer measures the effective value of TrueRMS voltage, which ensures high accuracy even with distorted flow.
For alternating voltage measurement is made in relation to the neutral conductor N. For direct voltages measurement is made in relation to a common power supply point- or GND. Do not perform simultaneous measurement of direct and alternating voltages.
PLEASE NOTE!
Measurement channels are not galvanically isolated from each other. Measurement channels are galvanically isolated from the transducer power supply input and the RS-485 communication port. RS-485 port is not separated from the power supply.
Reset communication settings
Under cover is available code switch.
Details of resetting available in the instructions below.
- Power supply voltage
- 9÷30 V DC
- WE-WY breakthrough voltage
- 3 kV
- ports
- RS-485
- Communication protocol
- MODBUS RTU
- The type of work
- SLAVE
- Baudrate
- 1200÷115200 bit/s
- Data bits
- 8
- Stop bits
- 02-sty
- Bits of parity
- EVEN / ODD / NONE
- Address
- 1÷247
- Maximum measuring error
- 0,50%
- Processing error
- ±0,5%
- Measurement range TrueRMS - alternating AC voltage
- 0÷285 V
- Measurement range TrueRMS - DC voltage
- 0÷400 V
- Power consumption (max)
- 50 mA
- Precision of reading the register
- 1 V
- Sampling frequency
- 10 Hz
- Relative air humidity (for 30
- 85%
- Terminal
- pluggable terminal blocks 2,5 mm²
- Tightening torque
- 0,4 Nm
- Dimensions
- 1 module (18 mm)
- Assembly
- on rail 35 mm
- Ingress Protection Marking
- IP20
Module in RS-485 network
Setting the network address
Measurement voltage
Reset communication settings
Communication parameters MODBUS RTU protocol
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3F voltage measurement transducer with MODBUS RTU output.
MB-3U-1 transducer is designed to measure the voltage and to transmit the data via RS-485 port using MODBUS RTU protocol.
MB-3U-1 transducer is designed to measure the voltage and to transmit the data via RS-485 port using MODBUS RTU protocol.