DIP Switch Settings Program Options via DIP Switch
MS-2/MS-4 PN 51512:D 10/18/04 37
3.1.3.5 Strobe Synchronization
Switches 5 and 6 are used to program the Synchronization feature. This feature
controls the activation of notification appliances in such a way that all devices will
turn on and off at exactly the same time, This is particularly critical when activating
strobes which must be synchronized to avoid random activation and a potential
hazard or confusion. The FACP can be programmed to operate with a variety of
manufacturer’s devices. The following table lists the required switch settings to
accomplish synchronization:
The factory default setting is switches 5 and 6 OFF for No Synchronization.
3.1.3.6 Nonsilenceable Waterflow for Combination Circuit
If SW1 switch 8 is set to the ON position to select a Combination Waterflow/
Supervisory Circuit (refer to "IDC Combination Circuit" on page 34) and SW3
switch 7 is set to the ON position to select the Nonsilenceable Waterflow for the
Combination Circuit option, the following conditions will occur:
• MS-2 - NACs become nonsilenceable upon acitvation of IDC #1 (Combination
Circuit)
• MS-4 - NACs become nonsilenceable upon activation of IDC #2 (Combination
Circuit)
Notes:
1.If initial alarm activations are from IDCs other than the Combination Circuit,
the NACs will be either silenceable or nonsilenceable, depending on the
setting of SW3 switches 1 and 3 (refer to "NAC1 Nonsilenceable" on page 36
and "NAC2 Nonsilenceable (MS-4 only)" on page 36).
2.If alarm activation is from the Combination Circuit programmed for
nonsilenceable, all NACs will be nonsilenceable regardless of subsequent IDC
activations.
3.1.3.7 Spares
Switch 8 is a spare switch and has no function at this time. The switch should
therefore be left in the factory default setting of OFF.
Synchronization Feature Switch 5 Switch 6
No Synchronization OFF OFF
System Sensor Synchronization ON OFF
Gentex Synchronization OFF ON
Wheelock Synchronization ON ON
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