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S1 Global Options DIP Switch
Command Input #1
Power supply Output circuits can be configured to "follow" a sync pattern that is input to Command Input #1 (TB5), either immediately
(Input#1 Normal Configuration), or only after a trigger signal (Input #1 Sync Configuration) is applied at Command Input #2 (TB6) or Com-
mand Input #3 (TB7), if applicable. In Input #1 Sync Configuration, an output circuit will only output the Command Input #1 sync pattern
when Command Input #2 (or Command Input #3 on the SK-PS10) is receiving a valid (9V - 32V) trigger signal.
•
Input #1 is dedicated as the follower input for any synchronization signal received into this input. Do not apply the trigger signal to this
input.
•
Input #2 is used for the trigger input for either the 6 amp or 10 amp models. Do not apply the synchronization signal to this input.
•
Input #3 can also be used for the trigger input, but is only available on the 10 amp model. Do not apply the synchronization signal to
this input.
•
Use only one input (Input #2 or #3) at any one time for the trigger input. When using the Global DIP switch S1 #1 and #2 = ON,ON,
both Input#2 and Input#3 will be used as the trigger input.
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A trigger signal between 9-32VDC is required for proper operation.
If the sync signal is lost in Input#1 Normal Configuration or only the trigger signal is present at Input#2 or #3 in Input#1 Sync Configuration,
the output circuit behavior will depend on the operating mode configuration:
•
In Default Mode (Input#1 Normal Configuration, S1 DIP switch 3 ON, 9 ON, 10 ON):
– If the there is no sync signal, the NAC output circuits will be turned OFF immediately.
– If the sync signal is suddenly lost (due to wiring failure), the power supply will turn NACs OFF immediately until a sync signal
appears.
– If the sync signal becomes active after being previously lost (while the trigger signal is ON), the outputs will immediately follow the
Sync signal and NAC configurations.
•
In Default Mode (Input#1 Sync Configuration, S1 DIP switch 3 OFF, 9 ON, 10 ON):
– If the there is no sync signal at Input #1, the NAC output circuits will be turned OFF immediately, even if there is a trigger signal at
input #2 or Input#3.
– If the sync signal is suddenly lost at Input #1 (due to wiring failure), the power supply will turn NACs OFF immediately, even if
there is a trigger signal at input #2 or Input#3, until a sync signal appears.
– If the sync signal becomes active after being previously lost, the outputs will immediately follow the Sync signal (provided the
trigger is present at Input#2 or Input#3) and NAC configurations.
•
In Retrofit Mode (Input#1 Normal configuration, S1 DIP switch 3 ON, 9 OFF, 10 OFF):
– If there is no sync signal, the NAC circuits will be turned off immediately.
– If the sync signal is suddenly lost (due to wiring failure), the power supply will turn NACs off immediately until a sync signal
appears.
– If the sync signal becomes active after being previously lost (while the trigger signal is on), the outputs will immediately follow the
sync signal and NAC configurations.
•
In Retrofit Mode (Input#1 Sync Configuration, S1 DIP switch 3 OFF, 9 OFF, 10 OFF):
– The sync signal is monitored continuously and is declared lost if the signal is off for 3 consecutive seconds. The sync signal is
declared restored (after being previously lost) after it is back on.
– If the trigger signal is activated while the sync signal is in lost state, the power supply will turn NACs on steady with no sync until
the sync signal is restored. The NACs will turn off when the trigger input becomes inactive.
– If the sync signal goes missing while the trigger signal is active, the power supply will turn NACs off until the sync goes into Sync
Lost state (3 sec). After the three seconds, the power supply will turn NACs on steady with no sync.
– If the sync signal goes into the restore state after being previously lost while the trigger signal is active, the outputs will follow the
sync signal and NAC configurations.
Charger Enable/Disable
The SK-PS battery charger can be disabled to accommodate an external battery charger, such as the CHG-75 or CHG-120F. Setting DIP
switch position 4 to the OFF position will disable the charger. Setting DIP switch position 4 to the ON position will enable the charger. It
should only be disabled if an external battery charger is being used for the SK-PS.
AC Loss Door Holder Dropout Timer
Any output can be configured as a NAC, aux power, or door closer circuit. Configuring an output circuit as a door closer circuit will provide
a steady 24 VDC to door holders until an alarm condition or an AC fail condition. Upon an alarm condition, power to door holder circuits
will be removed, causing doors to close immediately. During an AC fail condition, the door holder will remain energized until the pro-
grammed AC fail indication delay expires. Programmed delays are only applicable to AC loss conditions. Refer to Table 3.1 for UL-compli-
ant settings.
DIP switch positions 5 and 6 are used to select the door holder dropout timer as listed below:
SK-PS Series Instruction Manual — P/N LS10227-002SK-E:C 2/2/2022
Position 5
Position 6
OFF
OFF
ON
OFF
OFF
ON
ON
ON
Table 3.4 Door Holder Dropout Settings
Door holder dropout delay after AC loss
Power does not drop out with AC loss
5 minutes
60 seconds
15 seconds
Programming Options
25
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