CET PMC-53A User Manual

CET Electric Technology
48
Switching Time
Specify when to switch from one TOU schedule to
another. Writing 0xFFFFFFFF to this parameter disables
switching between TOU schedules.
Format:
YYYYMMDDHH
Default=0xFFFFFFFF
Table 4-15 TOU Setup Parameters
For each of the 8 Tariff Rates, the PMC-53A provides the following information:
Energy: kWh Import/Export, kvarh Import/Export, kVAh – Per Phase and Total
Peak Demand: kW/kvar/kVA of This Month (Since Last Reset) and Last Month (Before Last Reset).
TOU data is available through the front panel and communications.
4.7 Diagnostics
The PMC-53A provides wiring error detection for 3P4W and 3P3W wiring modes, which allow users to
check for possible problems especially during the initial commissioning stage. The following wiring
errors may be detected:
 Frequency Out-of-Range
 Voltage / Current Phase Loss
 Incorrect Voltage and Current Phase Sequence
 kW Direction per phase and Total
 Possible Incorrect CT Polarity
 Broken RTD
Please note the detections above are based on the assumptions below:
 The Voltage and Current Phase Sequence are consistent
 kW is kW Import, which means the kW is over 0
 The wiring is correct
 3P4W wiring mode supports all detections
 3P3W wiring mode does not support the detection of Voltage Phase Loss, kW Direction per phase
and CT Polarity
The Diagnostic register (0101) indicates the status of the wiring error detection with a bit value of 1
meaning active and 0 meaning inactive which are illustrated in table below:
Bit
Event
B00
Summary Bit (Set if any other bit is set)
B01
Frequency is out of range (45 to 65Hz) (3P4W or 3P3W)
B02
Any phase voltage < 10% of PT Primary (Register 6000) (3P4W only)
B03
Any phase current < 10% of CT Primary (Register 6004) (3P4W or 3P3W)
B04
RTD 1 broken (RTD Input option only)
B05
RTD 2 broken (RTD Input option only)
B06
Voltage Phase Reversal (3P4W only)
B07
Current Phase Reversal (3P4W or 3P3W)
B08
Negative kW Total may be abnormal (3P4W or 3P3W)
B09
Negative kWa may be abnormal (3P4W only)
B10
Negative kWb may be abnormal (3P4W only)
B11
Negative kWc may be abnormal (3P4W only)
B12
CTa polarity may be reversed (3P4W only)
B13
CTb polarity may be reversed (3P4W only)
B14
CTc polarity may be reversed (3P4W only)
B15
Reserved
Table 4-16 Wiring Diagnostic Register

CET PMC-53A Specifications

General

Brand	CET
Model	PMC-53A
Category	Measuring Instruments
Language	English