CET PMC-690, User Manual

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CET Electric Technology
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Number of Parameters 0 to 64 (user defined) 64
Parameters 1 to 64 See Section 5.8.10
Table 4-22 Setup Parameters for SDR
The SDR Log is only operational when the values of Recording Interval and Number of Parameters are
all non-zero.
4.4.3 Max./Min. Log
The PMC-690 provides 4 Max./Min. Logs and capable of recording 20 parameters each since Last Reset
(This Month) or before Last Reset (Last Month). Each record includes relevant parameter values and
timestamp. The recorded data is stored in non-volatile memory and will not suffer any loss in the event
of a power failure. All Max./Min. Log can be accessed over communication.
The PMC-690’s Max./Min. Log can record the following parameters:
Max./Min. Parameters
Ua Ub Uc Uab Ubc Uca
Ia Ib Ic kW Total kvar Total kVA Total
P.F. Total Ua Pst Ub Pst Uc Pst Ua Plt Ub Plt
Uc Plt
Ua Over
Deviation
Ub Over
Deviation
Uc Over
Deviation
Uab Over/Under
Deviation
Ubc Over/Under
Deviation
Uca Over/Under
Deviation
Freq. Deviation U0 Unbal. U2 Unbal. I0 Unbal. I2 Unbal.
U4 RMS I4 RMS U1 U0 I1 I0
Ua THD Ub THD Uc THD Ia THD Ib THD Ic THD
kW Total TH kvar Total TH kVA Total TH P.F. Total TH kW Total H01 kvar Total H01
kVA Total H01 P.F. Total H01 Frequency
Ia/Ib/Ic/I4
K-Factor
U2 I2
Table 4-23 Max./Min. Measurements
The programming of the Max./Min. Log is only supported over communications. Each Max./Min. Log
provides the following setup parameters:
Parameters Value
Self-Read time

A zero value means that the Self-Read will take place at 00:00 of the first day of each month.
(Default)

A non-zero value means that the Self-Read will take place at a specific time and day based
on the formula: Self-Read Time = Day * 100 + Hour where 0 ≤ Hour ≤ 23 and 1 ≤ Day ≤ 28.
For example, the value 1512 means that the Self-Read will take place at 12:00pm on the 15
th
day of each month.

A 0xFFFF value will disable the Self-Read operation and replace it with manual operation. A
manual reset will cause the Max./Min. Log of
This Month to be transferred to the Max/Min.
Log of Last Month and then reset. The terms This Month and Last Month will become Since
Last Reset and Before Last Reset .
Number of Parameters 0 to 20
Parameter 1 to 20 All real-time data can be configured to parameters, please see Section 5.8.11
Table 4-24 Setup Parameters for Max./Min. Log
4.4.4 Pst Log
The PMC-690’s Pst Log can store up to 52560 events per 10 minutes about voltage Pst in its non-volatile
memory. Each event record includes the event classification, its relevant parameter values and a
timestamp in 1ms resolution.
All events can be retrieved via communications for display. If there are more than 52560 events, the
newest event will replace the oldest event on a first-in-first-out basis. The Pst Log can be reset from the
front panel or via communications.