IOMod Meter – meter module for LV and MV.

Overview

IOMod Meter is a stand-alone metering measurement module for voltages and currents based on sensors technology with communication support based on Modbus RTU, IEC 60870-5-101, and IEC 60870-5-103 protocols.

Designed to measure voltage and current values with high accuracy in real-time. IOMod Meter can be used for numerous applications like electrical distribution substations, photovoltaic and hydropower plants, and railway power supplies where the user needs them.

IOMod Meter calculates neutral current and voltage RMS values I0 and U0 as well as many other measurements like active, reactive, apparent power for every phase, power factors per phase, phase angles for currents and voltages, and harmonics.

Features

Analog inputs measurement in 16-bit resolution
3x low-power (LoPo) current measuring inputs (225 mV) or 3x1A/5A CT with the adapter.
3x low-power (LoPo) voltage measuring inputs (3.25 V/√3) or 3x100V/400V VT with the adapter.
Frequency acquisition (nominal frequency 45 to 65 Hz).
Calculation of RMS values for currents, phase, and phase-to-phase voltages.
Calculation of:
- Frequency;
- Active, reactive, and apparent power;
- Neutral voltage, neutral current;
- Power factor;
- Phase angle;
- Harmonics calculation;

Communication port: RS485
Communication over Modbus RTU, IEC 60870-5-101, and IEC 60870-5-103 protocols.

Specifications

Article number	IOMOD-Meter v1
Product Description	3 Current sensor inputs and 3 Voltage sensor inputs module
Configuration software	IOMOD Utility, Serial console (putty)*
Warranty	2 years
Measurement values and functions
Analog inputs	6x 16-bit resolution
Input types	Channel-independent
Current inputs	3
Current inputs measurement range	225 mV (IEC 60044-8) with external adapter 1A / 5A
Current input impedance	1 MΩ; < 170 pF
Accuracy	1%
Voltage inputs	3
Voltage inputs measurement range	3.25 V/√3 AC (IEC 60044-7) with external adapter 100VAC / 400VAC
Voltage input impedance	1 MΩ; < 170 pF
Accuracy	1%
Frequency measurement range	45..65 Hz
Overvoltage protection	±20V
Interface and communication
RS485 interface	ANSI/TIA/EIA-485-A-1998
Communication protocols	– Modbus RTU Slave; – IEC 60870-5-101 Slave; – IEC 60870-5-103 Slave.
Baudrate	600 – 115200
Parity	None, Even, Odd
Terminating resistors	120 Ohm (configurable)
USB interface
Type	Mini USB
Use	Configuration/Firmware upgrade
Power supply
Auxiliary power supply	9-33VDC (full range)
Power consumption	40mA @ 12VDC, 20mA @ 24 VDC
Insulation voltage	3 kV
Operating conditions
Operating temperature	-40°C … 85°C
Storage temperature	-40°C … 85°C
Humidity	max. 95 % relative Feuchte bei 40° C
Protection class	IP20
Dimensions and installation instructions
Case height x width x depth	119 x 17.5 x 101 mm
Installation type	DIN Rail mounting

* IOMOD Utility is configuration tool for IOMOD devices with firmware v2.x, for devices with fw v1.x configuration can be done via USB port as Serial console interface like Putty.