Som-4, Drm-4, Notification appliance circuit (nac) – Potter PFC-9000 Series User Manual

Page 42

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42

PFC-9000 • 5403535 • REV G • 9/08

S (IN)

24+ (OUT)

SOM-4

24- (OUT)

24+ (IN)

24- (IN)

OUT ( + )

OUT ( - )

SC (IN)

S (OUT)

SC (OUT)

FROM PFC-9000

TO NEXT

DEVICE

10K EOL

DWG# PFC-9000-29A

All wiring shown

is supervised and

inherently power

limited.

UL Listed regulated,

power limited supply

for fire protection

signaling service for

audible devices.

DRM Relay Module

The DRM is a relay module that is controlled by the fire alarm panel and correlated to the inputs of the system. The DRM has two

independent form C relays that activate simultaneously. Both relays must be wired either power limited or non-power limited.

When the device is activated the red LED will latch on and the relays will change position. When the device is being polled the

LED will flash. Contacts are rated 2 Amps at 30 VDC.

Use only FPL, FPLR, or FPLP wiring in accordance with Article 760 of the National Electrical Code.

S (IN)

NO1

DRM-4

COM1

NC1

NO2

COM2

NC2

SC (IN)

S (OUT)

SC (OUT)

FROM PFC-9000

TO NEXT

DEVICE

DWG# PFC-9000-29B

All wiring shown

is supervised and

inherently power

limited.

(FORM “C”

CONTACTS NON-

SUPERVISED)

SET 2

SET 1

All wiring shown on contact

terminals are shown in standby

mode.

Inputs to both sets of Form “C” contacts must be either Power Limited or Non-Power Limited. Do not mix Power Limited

wiring with Non-Power Limited wiring on contact side.

Notification Appliance Circuit (NAC)

NAC installation wiring shall not exceed 50 Ohms

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