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.
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.
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|Power supply voltage||9├Ě30 V DC|
|WE-WY breakthrough voltage||3 kV|
|Communication protocol||MODBUS RTU|
|The type of work||SLAVE|
|Speed ??- adjustable||1200├Ě115200 bit/s|
|Bits of parity||EVEN / ODD / NONE|
|Maximum measuring error||0,50%|
|Measurement range TrueRMS - alternating AC voltage||0├Ě285 V|
|Measurement range TrueRMS - DC voltage||0├Ě400 V|
|Maximum power consumption||50 mA|
|Precision of reading the register||1 V|
|Sampling frequency||10 Hz|
|Relative air humidity (for 30||85%|
|terminal||screw terminals 2,5 mm┬▓|
|Tightening torque||0,4 Nm|
|dimensions||1 module (18 mm)|
|Assembly||on rail 35 mm|
|Level of security||IP20|
Communication parameters MODBUS RTU protocol