Honeywell SYA14 Series Manual page 145

FF-SB Series Installation Manual
Emitter and Receiver Module Assemblies
Two module assemblies are located inside each emitter and receiver unit; the power supply
module and the optical controller module (see figure 4-4)
Figure 4-4 Emitter and Receiver Module Assemblies
The power supply module in the receiver unit has three mechanically linked relays. The power
supply module in the emitter unit has no relays. A fuse is located on the power supply module
of the emitter and receiver.
The optical controller module has a master module that controls the LEDs in the emitter unit
and the photoreceivers in the receiver unit. Some units may have one or more optical
extension modules connected to the master module (and any other extension modules) via a
flat ribbon cable.
64 Honeywell • MICRO SWITCH Sensing and Control
For application help: call 1-800-537-6945