Datcon PQRM5100 11 U I Series, Instruction Manual

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PQRM5100 11 Ux Ix xx xx (PS)
20200205-V1
7
3.3. Operating principle
Area of application
The PQRM5100 11 Ux Ix xx xx (PS) Single Phase power
transmitter measures the characteristic for single-phase
network system.
The current input of the instrument is isolated from the
network with wideband current transformers. The voltage
input of the instrument is galvanic connection in the
network. The PQRM5100 11 Ux Ix xx xx (PS) Single Phase
power transmitter has many measurement configurations.
The measurement configuration and the output parameters
are configurable from PC via USB port with the help of a
free of charge configuration software.
Options:
• Two 4-20 mA / 0-20 mA or 0-5 mA / 1-5 mA galvanic
isolated, configurable, scalable analog output
• RS485 galvanic isolated communication output with
MODBUS RTU slave protocol. 32 instruments can be
connected to the PLC or to the computer.
One option can be installed (dual analog output or
communication output) at the same time.
Operating principle
The voltage divider output and current-transformer output
signals is led through the signal conditioner and protection
circuits to the 16 bit A/D converter inputs. The digitalized
signals are processed by the instruments microcontroller.
The calculated parameters are produced in IEEE754
standard “Single Precision” figure. The calculated energy
values (+E
P
, -E
P
, +E
Q
, -E
Q
) and the settings are stored an
EEPROM for an unlimited period of time. The switched-
mode power supply of the instrument produces two galvanic
isolated output voltages: one for the instrument circuitry and
one for the installed options.
Power supply
The instrument has two power supply version:
PQRM5100 11 Ux Ix xx xx 24 VDC
PQRM5100 11 Ux Ix xx xx PS 230 V AC/DC