Potter PFC-9000 Series User Manual

Page 41

PFC-9000 • 5403535 • REV G • 9/08

FRCM-4

IN-A

IN-B

FRCM-2

DWG. #PFC-9000-27

10k RESISTOR

SLC -

SLC +

IN-B

SLC -

SLC +

10k RESISTOR

IN-A

Modules

All of the SLC modules, except for the FRCM-2, mount in 4” square electrical boxes and have an off white cover plate that

allows the LED on the module to be seen. In addition, all of the modules have the same foot print. All of the modules, except the

PSCI, require addressing in order to operate as part of the system. The FRCM-4, SOM and DRM utilize a remote programming

cable that plugs into the module. The cable plug is marked with a number 1 and that must coincide with the plug 1 on the module.

The FRCM-2 utilizes the cable without the plug for programming. When programming the modules, at least one of the SLC wires

must be removed.

FRCM Fast Response Contact Module

The Fast Response Contact Modules, the FRCM-2 and FRCM-4, are essentially the same device because of the way they

function. The main difference is the mounting used for each device and the FRCM-4 has a status LED. The FRCM-2 mounts into

a single gang electrical box behind a pull station or in a sprinkler-monitoring device. The FRCM-4 will only mount in a four-inch

square electrical box. The FRCM’s both operate on the SLC loop and utilize an end-of-line resistor for supervision of the dry

contact. In addition, the FRCM’s will only monitor normally open contacts.
SOM Supervised Output Module

The SOM is a supervised output module designed to provide an output that is controlled by the fire alarm panel through the SLC

loop and can be put anywhere on the loop. The SOM must have 24VDC power from a listed regulated power supply. Failure to

provide power will result in the module being a missing device on the SLC loop. The SOM utilizes an end of line resistor to fully

supervise the wiring to the notification appliance. The wiring to the notification appliance cannot exceed 50 ohms. When the SOM

is activated the red LED will latch on the device. The LED will flash when the device is being polled by the loop.