12
1.
Overview of the unit
1.1 Main features
• Supports international standards
It complies with the international IEC accuracy standards and can be connected using generic CTs.
• Multi-circuit metering
Multi-circuit metering is possible with one unit, with up to four circuits metered by 1-phase 2-wire, and up to 2
circuits metered by 1-phase 3-wire and 3-phase 3-wire. It is also possible to measure multiple 1-phase 2-wire with
different phases branching off a 1-phase 3-wire, and to simultaneously measure both 1-phase 3-wire and 1-phase
2-wire.
• Multi-address system
There can be a maximum of 4 circuits in one unit. The circuits act as independent power monitors, each able to
measure, each having different settings, and each able to be allocated different communications addresses. You
can manage individual circuits as electricity monitors from a host system, so it is easy to build a communications
system and add places for measuring.
• Pulse output
The unit has 4 ports for outputting pulses each time the active energy exceeds set values. You can allocate each
circuit a pulse output port in a multi-circuit metering setup.
• RS-485 communications
You can use the Modbus (*1) and CompoWay/F (*2) protocols for RS-485 communications.
*1.
Modbus is a communications control system that conforms with the RTU Mode of the Modbus Protocol.
*2.
CompoWay/F is Omron's unified communication procedure for general serial communications. It has a unified
framework format and has commands compliant with FINS which works well with Omron programmable controllers, for
instance, simplifying communications between host devices (computers for example) and components.
