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E.2 CONTROL MODULE LOAD SHEDDING SEQUENCE
Load
shedding
command
received
?
CM
load shed
enabled?
Y
Y
Y
Y
N
N
N
N
N
N
Y
Y
Y
All
other
contact inputs
active?
[2]
Is
communications
active? [3]
Has
CM
power
been
reset?
Fail
safe
mode
enabled?
CM temp.
at low temp.
alarm SP?
[4]
N
Control at low
temp. alarm
setpoint.
CM holds its output
OFF for 30 seconds.
Normal mode
control.
All matching CMs set
their outputs to OFF
CM display indicates
load shedding mode. [5]
2. If an control module is associated with more than one remote contact input, all inputs must
be activated before the control module will go into a Load Shedding mode.
3. If communications between a control module and the AC 2000+ are interrupted, or if the
power has been reset to the control module, then the control module will hold its output OFF,
waiting for a Load Shedding command.
4. Only if the Low Temperature Alarm is ENABLED.
5. The display on CM 2000/CM 2000+ control modules will flash “Prl” (priority) when load
shedding is active in place of the load current reading.
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