Chapter 1 General Information
SPM20 CMS is a monitoring system especially to the power terminal by its micro
distributed multi-circuit monitoring unit. It consists the measurement module and
control module, and these two modules is connected by the PLbus general line
which is also researched by Pilot, and the connector plug is by the standard RJ12
which can simplify the installation on site.
SPM20 is suitable to Power distribution cabinet and switch cabinet of the
Low-voltage distribution system less than AC 220V（phase voltage）, and support to
single phase two wires and three-phase four-wires system. One monitoring unit can
support 30pcs measurement modules at most, and can monitor 10 three-phase
circuits or 30 single phase circuits, and have the measurement and metering function
to the general data of the three-phase branch (general power, total electric-energy).
Its current measurement is in maximum 63A, can satisfy the different application on
site.
The micro distribution multi-circuit measurement unit can be for multiple installation,
and the controller conforms to DIN35 rail install, and backboard screw fixation install;
There are the closed in line installation and opening buckle mounting for the option
as required. The connection between the measurement unit and controller is by the
standard RJ12 port, can make the wiring arrangement easy on site.
The Function realized as follows：
Real-time data measurement
1/3 phase voltage
1/3 phase current
Active power
Reactive power
Apparent power
Power factor
Frequency
Metering
Active energy
Reactive energy
Alarm
Under voltage
Over voltage
Over current
Module Fault
Communication
1 RS485 communication，Modbus-RTU protocal
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