CET Electric Technology
87
*There are no unit types for kvarh and kVAh in BACnet so the return values are in unit of kWh.
Notes:
1) When the Wiring Mode is 3P3W, the per phase line-to-neutral voltages, kWs, kvars, kVAs and
PFs have no meaning, and their registers are reserved.
2) Uan/Ubn/Ucn THD = Uab/Ubc/Uca THD in 3P3W Wiring Mode and represent the harmonics
of the line voltages.
3) Uan/Ubn/Ucn Angle = Uab/Ubc/Uca Angle in 3P3W Wiring Mode and represent the phase
angles of the line voltages.
4) Analog Value Objects (PMC-53A’s Basic Setup Registers)
Optional Properties Supported: Description, Relinquish_Default, Priority_Array
Writable Properties: Present_Value, Out_Of_Service, Units, Relinquish_Default
Use the Present Value property of the Analog Value object for some writable variables in the
meter other than those used specifically for BACnet configuration or Time Synchronization.
Values are checked when written, and errors are returned for invalid entries. The table below
describes how the Setup Registers of the PMC-53A are represented in BACnet, their valid ranges,
their defaults as well as how they are used. PMC-53A supports the Description,
Relinquish_Default and Priority_Array optional properties. Writable properties include
Present_Value, Out_Of_Service, Units and Relinquish_Default, but Units are not non-volatile
after modification.
0 = DEMO
1 = 1P2W L-N
2 = 1P2W L-L,
3 = 1P3W L-L-N
4 = 3P3W, 5 = 3P4W
0 = IEC, 1 = IEEE, 2 = -IEEE
Number of Sliding Windows
Clear Present Peak Demand
Default = 0
Writing
“0xFF00” to the
register to
execute the
described
action.
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