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122
SCS Series Manual —
P/N 15712:L 7/18/16
Ratings and Wiring Diagrams
Dedicated Smoke Control System Wiring Diagrams
Figure 5.13 EP Damper Control, Dedicated System - FSCS Switch Group Type 3
Figure 5.13 depicts an EP damper in a dedicated system with the capability of control and verification of the
OPEN
and
CLOSED
state, switch
group type 3. In the above configuration, the CON
OFF⁄CL
CM is activated. The CON
OFF⁄CL
CM controls a normally open contactor for the
pressure switch power. When the CON
OFF⁄CL
CM is activated, the normally open contactor is closed, thus supplying power to close the
damper. When the damper completely closes, the damper closed limit switch is closed, indicating that the damper is in the
CLOSED
position.
(When the damper is in the open position, the damper open limit switch is closed.) The VER
OFF⁄CL
MM monitors when the damper closed
limit switch is
CLOSED
. In this case the VER
OFF⁄CL
MM is activated and the VER
ON⁄OP
MM is deactivated because the damper is
CLOSED
.
Airflow
PRESSURE
SWITCH
SMOKE
DAMPER
CLOSED
1a listed
contactor
Listed
24 VDC
Power Source
SLC Loop
FCM-1
CON
OFF/CL
CM
(activated)
D
EP-
d
F
3
A
-f
s-
2.
wm
f
Power
Return
FMM-1
VER
OFF⁄CL
MM
(activated)
FMM-1
N/O
COM
Limit Switch
for closed
position
ELR-47K
(use 3.9K listed ELR with FZM-1)
Pneumatic
Tubing
N/O
COM
Limit Switch
for open
position
VER
ON⁄OP
MM
(deactivated)
Power Source
*If the SLC device
does not match the
one in this figure, refer
to the SLC manual
appendix, which
contains wiring
conversion charts for
type V and type H
modules.