Securitron EXD User Manual

Page 11

PN# 500-13350

Page 11

Rev. E, 11/11

CONNECTIONS FOR POWER SUPPLY USING CCS-8 BOARD

BATTERY
PACK

(OPTIONAL)

AC
FUSE

TERMINALS R1-R8
COMMON NEGATIVE

DC RETURN (0 VOLT)

TERMINALS P1-P8
SUPPLY +V TO THE TIMER.

EACH TERMINAL IS ON
A SEPARATE POLYSWITCH
WHICH IS APPROPRIATE

FOR INSTALLATIONS
WITH MULTIPLE TIMERS

SLIDE SWITCHES POWER AND DE-POWER EACH
“P” OUTPUT. LED’S SHOW OUTPUT STATUS

DC
FUSE

OF
F

FIRE ALARM
N.C. CONTACTS

OPEN WHEN
ALARM ACTIVE

RED

BLACK

B- B+

Terminal FA is a free parking terminal used only with Securitron’s Power Supply Monitor. If you
are using this product, wiring with the FA terminal is shown in the PSM manual. The H terminal

carries +V with the full output of the power supply. It is used for specialty applications where
the full output must be directly connected to a large load. EXD systems always operate off the
“P” terminals so the “H” terminal is never used.

Interconnection between the fire alarm system and the power supply is a vital part of the exit

delay system function. In a fire, all doors must release immediately. The EXD systems
accomplish this by mandating a connection with the fire alarm that cuts off all DC power to the
doors. This is the simplest and most sure way to accomplish the function. A UL listed fire
alarm system must be used with latching type dry contacts designed for "auxiliary"
operation. Alarm or trouble contacts may not be used. The contacts must be of
sufficient capacity to switch the total DC current output of the EXD power supply

selected. Figure 4 clearly shows the interconnection for the three EXD power supply types.

6.2.4 BATTERY BACKUP
All EXD system power supplies (BPS series) are capable of charging batteries and therefore
continuing operation if local AC power fails. Certain code versions permit use of battery backup

and certain ones forbid it. See Section 4 for the details. We also recommend that if battery
backup is desired, its acceptance be confirmed with the local approving authority.