Installation
MS-5UD/MS-10UD Series PN 52626:B 8/01/2008 31
2.4.4 Remote Synchronization Output
Synchronization is a feature that 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 to
individuals. Devices connected directly to the control panel’s NAC can be synchronized as
described in "Synchronized NAC Operation" on page 69.
Notification appliances connected to remote power sources may require synchronization with the
FACP’s devices. For the MS-5UD-3(E), MS-10UD-3(E), this can be accomplished by connecting
the Remote Synchronization Output from TB2 of the FACP to a compatible sync input of a power
supply such as the FCPS-24FS6/8. The 24 VDC, 40 mA signal from TB2 follows, that is mimics
the signal on NAC 1 (Out 1). This allows the devices connected to the power supply to be
synchronized with the devices connected to Out 1 on the FACP.
For the MS-5UD-7(C/E), MS-10UD-7(C/E), the Remote Sync Output is not
required.
Synchronization for remote power supplies is provided directly from NAC1 (Out 1). Note that
NAC 1 (Out 1) must be programmed for sync operation when used for this purpose.
The Remote Synchronization Output is power-limited and supervised and requires a 4.7KΩ ELR
resistor at the remote power supply end of the wiring.
Remote Power Supply
FACP main circuit board
4.7KΩ ELR
Sync Input
Remote Sync Output
Figure 2.10 Remote Sync Output
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