Honeywell MS-2 User Manual download pdf (Page 37)

DIP Switch Settings Program Options via DIP Switch

MS-2/MS-4 PN 51512:E 01/18/05 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.

3.1.3.5.1 Maximum Number of Strobes for Synchronization

The total current draw for each Notification Appliance Circuit cannot exceed 2.5

amps. Refer to the manufacturer’s documentation supplied with the strobes to

determine the maximum current draw for each strobe and ensure that the circuit

maximum is not exceeded.

To ensure proper strobe and circuit operation, there is also a limit to the number of

strobes that can be attached to each circuit. Following is a list of the strobes that

have been tested with this FACP and the maximum number that can be connected to

each NAC. Make sure that the NAC maximum current is not exceeded:

 System Sensor: 40 Strobes

 Wheelock: 25 Strobes

 Gentex: 23 Strobes

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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Honeywell MS-2 User Manual Page 37

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