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CET Electric Technology
Figure 4-8 Current ON/OFF Status (L/LL Alarm Time Delay=0)
Please refer to
Figure 3-32 Current Alarm Setup Interface
and the
Setup =>
Alarm Setup
in
Section
3.3.2
to see where to configure the
Current OFF Alarm Enable
in the Web Interface and HMI,
respectively.
4.3.4 Current Alarms
PMC-592 provides four Current alarm levels (High-High, High, Low, Low-Low) for the Mains and Branch
Currents as well as the associated Current Demands with Time Delay parameters.
It should be noted that the
Alarm Limit
is calculated based on the
Breaker Rating
parameters.
Therefore,
it’s critical to set the Breaker Rating correctly for each Current channel for the Current Alarms to work
properly.
Channel Alarm Limit = Channel’s Breaker Rating x Alarm Threshold (%)
For High and High-High Alarms, which are conceptually similar to Over Setpoint:
Channel Alarm Return Limit = Channel Alarm Limit x (1 – Universal Hysteresis)
For Low and Low-Low Alarms, which are conceptually similar to Under Setpoint:
Channel Alarm Return Limit = Channel Alarm Limit x (1 + Universal Hysteresis)
The following table illustrates the Current Alarm setup parameters, which apply to both Mains-I/II and
all the Branch Circuits.
Parameters
Description
Range/Option
Default Value
Current Alarm Enable
Bit 0 = Mains-I, Bit 1 = Mains-II
Bit 2 = Branch, Bits 3 - 15 = Reserved
0 = Disabled
1 = Enabled
0
Current HH Alarm Threshold (%)
Current HH Alarm Threshold
0 to 100%
80%
Current HH Alarm Time Delay (s)
Current HH Alarm Time Delay
0 to 9999 (s)
10s
Current H Alarm Threshold (%)
Current H Alarm Threshold
0 to 100%
60%
Current H Alarm Time Delay (s)
Current H Alarm Time Delay
0 to 9999 (s)
10s
Current L Alarm Threshold (%)
Current L Alarm Threshold
0 to 100%
0
Current L Alarm Time Delay (s)
Current L Alarm Time Delay
0 to 9999 (s)
0
Current LL Alarm Threshold (%)
Current LL Alarm Threshold
0 to 100%
0
Current LL Alarm Time Delay (s)
Current LL Alarm Time Delay
0 to 9999 (s)
0
Current Demand Alarm Enable
Bit 0 = Mains-I
Bit 1 = Mains-II
Bits 2 - 15 = Reserved
0 = Disabled
1 = Enabled
0
Current Demand HH Alarm Threshold (%)
Current Demand HH Alarm Threshold
0 to 100%
0
Current Demand HH Alarm Time Delay (s)
Current Demand HH Alarm Time Delay
0 to 9999 (s)
0