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Electrical Transducers
LP-VD MODBUS® RTU Voltage Transducer

Data sheet
Modbus Instructions

LP-VD MODBUS® RTU Voltage Transducer

The LP-VD transducer converts an ac voltage input into an output signal which is proportional to the rectified arithmetic mean of the input.
Accurate measurement assumes a sinusoidal input waveform.
The output of the transducer is via RS485 serial data bus using MODBUS® RTU protocol.

Ordering information: LP-VD, input, output.
Example: LP-VD, input 0-250Vac, supply 230Vac.

Basic Specifications:
InputAll system voltages to 440V
Burden: 1mA @Vnom
Overload: 1.2xVnom continuous, 1.5xVnom for 10 seconds
Frequency: 50Hz, 60Hz
OutputRS-485 standard up to 32 stations on a twisted pair cable
Protocol: MODBUS® RTU
Data register: Unsigned 16 bit or signed 15 bit at location 40001
Baud rate: 9600 or 19200
Accuracy: Class 0.5 to IEC 60688
Range: 0 to 120% of nominal input
Power Supply: 24V, 110V, 230/240V ac ±20%, 1.5VA
: 24V dc ±20% or 110V/125V dc (88V-138V), 2W
IsolationGalvanic isolation between input, output circuit and auxiliary supply
Test voltage: 4kV 50Hz ac for 1 minute
TemperatureOperating: 0°C to +23°C to +60°C
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