3: Style Z (Class A) Nac Wiring; Remote Synchronization Output - Fire-Lite MS-9200UD User Manual

Installation
Notification Appliance Circuit
polarity shown in alarm state

2.6 Remote Synchronization Output

34
2.5.3 Style Z (Class A) NAC Wiring
2 Style Z (Class A) Notification Appliance Circuits,
supervised and power-limited
Polarized Bell
+
Polarized Strobe
+
+
Polarized Horn
B A A B
- -
+ +
NAC 1
TB3
Figure 2.9 NAC Style Z (Class A) Wiring
Synchronization is a feature that controls the activationof 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 NACs can be synchronized as described in "Type" on page 90.
Notification appliances connected to remote power sources may require
synchronization with the FACP's devices. This can be accomplished by connecting the
Remote Synchronization Output from TB2 of the MS-9200UD 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 NAC1. This allows the devices connected to
the power supply to be synchronized with the devices connected to NAC1 on the FACP.
The Remote Synchronization Output is power-limited and supervised and requires a
ferrite bead (refer to "UL Power-limited Wiring Requirements" on page 35). A 4.7 kΩ
resistor must be connected to the end of the wiring at the remote power supply.
Remote Power Supply
Sync Input
4.7 kΩ ELR
MS-9200UD
Figure 2.10 Remote Sync Output
Remote Synchronization Output
Polarized Bell
+
Polarized Strobe
+
+ Polarized Horn
B A A B
- -
+ +
NAC 2
TB4
Remote Sync Output
TB3
TB1 TB2
JP4
1
+ -
+ 24V - + 24V -
2
REMOTE PWR
RST
NON-RST
3
SUPPLY SYNC
POWER POWER
MS-9200UD PN 51906:A 12/10/02
TB4
B+ A+ A- B- B+ A+ A- B-
1B+ 3B+ 3B- 1B- 2B+ 4B+ 4B- 2B-