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32 Freedom Sequence Intelligent Power Manager Owner’s Guide
Circuit Level Advanced Settings
Reconnect Margin
When a load circuit connected to either Line1 or Line2 is shed by Freedom
Sequence to avoid an overload condition, Freedom Sequence stores in its
memory the current that load circuit was drawing before it got shed (that is,
Last Load Shed current).
The Freedom Sequence continuously checks for the Headroom Current
1
and compares it with the Current To Reconnect value for the circuit. If the
Headroom Current is more than the Current To Reconnect for a time-
period that is more than the Connect Sequence Delay setting, Freedom
Sequence will reconnect that circuit.
Current To Reconnect is calculated based on Reconnect MGN and Last
Load Shed.
For example, if Circuit1 was set to a reconnect margin of 20% and the
Last Load Shed current in memory was 10 amps, Freedom Sequence will
wait for a Current To Reconnect of 12 amps calculated as:
Last Load Shed + (20% × Last Load Shed),
to be available before reconnecting the circuit.
By default, the factory setting of Reconnect MGN for all AC relays
is set to 10%.
Battery Voltage Triggers
The Freedom Sequence has four DC relays which can be used to connect
and disconnect DC loads on the system based on battery voltage thresholds.
Each DC relay has a N/O/N/C contact that will toggle (switch between N/O
or N/C) if the battery voltage sensed by Freedom Sequence exceeds a Batt
High Trig Set voltage or drops below the Batt Low Trig Set voltage.
The DC relay will toggle back to the normal position when the battery
voltage drops below the Batt High Trig Clear voltage or rises above
the Batt Low Trig Clear voltage. Each DC relay can be configured with
a unique set of Battery High/Low Trig Set and Battery High/Low
Trigger Clear voltages.
By default, each of these voltage triggers is configured to:
Each of the triggers can be configured using similar procedures shown in
Figure 11 on page 27.
1.Headroom current is also known as available capacity.
Battery Voltage Trigger Default
12-volts
Default
24-volts
Low Battery Trigger Set [10.5V] [21.0V]
Low Battery Trigger Clear [11.0V] [22.0V]
High Battery Trigger Clear [14.0V] [28.0V]
High Battery Trigger Set [14.5V] [29.0V]
FSequence IPM Owners Guide.book Page 32 Thursday, October 6, 2011 3:33 PM