
HONEYWELL E-MON® MMU-STYLE METERS
7
62-0417—02
4.0 DESCRIPTION OF MULTIPLE METER
UNITS (MMU)
MMU cabinets can be used to house Class 1000, Class 2000, Class 3200 and
Green Class meters. IDR’s, (Interval Data Recorders) can also be installed in the
MMU cabinets with the meters.
These units are briefly described below:
4.1 Class 1000/2000 Meters
The Class 1000 and Class 2000 meters are power meters for use in sub metering
applications. The devices take inputs from current sensors and the line voltage
and output kW hours in pulses.
Refer to Sections 5, 6, &7 for general installation instructions on installing Class
1000 or Class 2000 meters into a MMU Cabinet.
4.2 Class 3200 Meters
The Class 3200 meter is a 3-element meter with communication. The device is
used to monitor electric power usage after the utility meter and store kW and
kVAR data for automatic meter reading.
Refer to Sections 5, 6, &7 for general installation instructions on installing Class
3200 meters into a MMU Cabinet.
4.3 Green Class Meters
The Green Class Meter is a power meter for use in sub metering applications. The
devices take inputs from current sensors and the line voltage and output kW
hours in pulses.
Refer to Sections 5, 6, &7 for general installation instructions on installing Class
3200 meters into a MMU Cabinet.
4.4 IDR (Interval Data Recorders)
The Interval Data Recorder (IDR) is an energy data collection device with
communication. The device is used to count digital pulses of the utility meter and
store data for automatic meter reading. Various communications types are
provided, EZ7, Modbus RTU, Modbus TCP/IP, BACnet MS/TP, BACnet IP, and
Lonworks TP/FT-10.
Refer to Sections 5, 6, &7 for general installation instructions on installing IDR
meters into a MMU Cabinet.
62-0417_B.fm Page 7 Tuesday, May 8, 2018 1:35 PM