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PURGE PANEL
CONTROLLER
Graphic Annunciators * Water Leak Detection
Fireman’s Smoke Control Panels * ARA Systems
109 Portwatch Way Wilmington, N.C. 28412 Phone: (800) 251-2512 Fax: (800) 251-9878
Internet: www.ledinc.com Email: sales@ledinc.com
Features
Adaptable to most 12-24VDC Control
Units.
Low standby current consumption.
Rugged solid-state construction.
Large .8 Inch LCD back-lit digital
readout.
FS
SERIES
Precision quartz crystal reference one
second incremental countdown.
Field programmable for desired delay
from 1-99 seconds or 1 second to 99
minutes in 59 seconds.
Output to trigger external relay when
countdown reaches 0.
On-board selectable Sonalert “ticks”
in one second intervals and sounds
continuously when time reaches zero.
On-board LED drivers indicate Power
On, Panel Activated, Purge Ready and
Purge Running.
The Model TA-123PP comes with a key
switch controller for Purge Panel
applications. When the Purge Running
LED is illuminated, a 24VDC output
voltage is supplied to activate a remote
relay. The remote relay contacts operate
the exhaust fans.
Model TA-123PP
Operation
When the extinguished agent is discharged, the
releasing panel activates the purge panel controller. The controller disables the key operated
purge switch, lights the Panel Activated indicator
and starts the timing cycle.
The purge fans can NOT be activated until the
preset “agent soak time” has expired. When the
time cycle is complete, the Purge Ready indicator is activated and the Purge switch is enabled.
Operation of the purge switch will light the Purge
Running indicator and activate the remote relay
output. This 24vdc output is used to energize a
Start Relay (relay by others), located at the
purge fan(s).
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PURGE PANEL
FS
SERIES
CONTROLLER
Simplified Hook-up Diagram
FACP TA-123PP
24 vdc power
Discharge Contact in FACP
+
Power Input - 24 VDC
-
+
Trigger Starts Timer Sequence
+
R
1
Relay - Mounted at Purge Fan
Purge Fan
N
H
120 VAC - Typical for Purge Fan
24 VDC Output
-
for remote relay
Setting the Purge Delay
Switches S1 - S4 are used to set the initial count down time of the TA-123PP. Each is set to the digit of the initial
count in the format of MM:SS where MM is the minutes to count and SS is the seconds to count. You may set
the minutes to count on S1 and S2 (S1 is 10 min and S2 is 1 min) from 0 to 99 minutes. S3 and S4 set the
seconds to count from 0 to 59 seconds. If S1 and S2 are set to 00 minutes, then S3 and S4 may be set from 0
to 99 seconds.
Additional Information
Purge timer is activated by the suppression system discharge contacts. After the preset user-adjustable time
delay has expired, the Purge Key Switch is enabled. Operate Key Switch to energize the Purge Fan start relay.
Remote relay contacts close to start the Purge Fan.
Specifications: 24 vdc input filtered and regulated 155ma standby, 175ma activated and 335ma purge
engaged.
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