ALPHABETIC REFERENCE EXCEL CARE CONTROL ICONS
74-5577–33 (US) 110
EN2B-0184 GE51 R0518 (Europe)
Automatic Load Switch-On after Maximum OFF Time Expiration
Some electrical loads such as refrigerators or cold-storage houses cannot be
switched off for long periods of time or the plants or goods in them may sustain
damage. For these loads, Parameter P12 (maximum OFF time) sets a limit time
value. Each time an XFM 36-1/S/R switches off the load, a timer starts to measure
the time the load is OFF. If the timer exceeds the maximum OFF time (Parameter
P12), XFM 36-1/S/R switches on the load for the minimum ON time duration
(Parameter P10). The peak load and shutdown functions have absolute priority and
can prevent the XFM 36-1/S/R from switching on the unit after exceeding the
maximum OFF time.
Display Parameter P7 indicates the expiration of maximum OFF time. Automatic
load switch-on after the expiration of Maximum OFF Time sets P7 to 1. Otherwise,
P7 is set to 0. When the Maximum OFF time is exceeded,, the load switches on
and display Parameter P5 indicates that the minimum ON time (P5 = 1), function is
now active.
After the minimum ON time, the load will turn OFF (assuming that the power
demand system still wants it shed.)
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