SCS Series Manual — P/N 15712:L 7/18/16 135
Non-dedicated Smoke Control System Wiring Diagrams Ratings and Wiring Diagrams
Figure 5.26 Motorized Damper Control
Non-dedicated System - FSCS Switch Group Type 4
Figure 5.26 depicts a motorized damper in a non-dedicated system with the capability of
OPEN control and verification of the CLOSED state,
switch group type 4. In the above configuration, the CON
ON⁄OP
CM is activated. The CON
ON⁄OP
CM controls two contactors: a normally
closed contactor for the damper closed power line, and a dual normally open/normally closed contactor for the damper open power line.
When the CON
ON⁄OP
CM is activated, the normally closed contactor is opened (cutting any power supplied by the EMS to the damper closed
power line), the normally closed portion of the dual contactor is opened (cutting any power supplied by the EMS to the damper open power
line), and the normally open portion of the dual contactor is closed, thus supplying power to close the damper. When the CON
ON⁄OP
CM is
deactivated, the EMS is free to control the damper. The EMS is currently being overridden by the CON
ON⁄OP
CM.
When power is supplied to the damper open power line, the damper opens. When the damper completely opens, the damper open limit
switch is
CLOSED, indicating that the damper is in the OPEN position. The VER
OFF⁄CL
MM monitors the CLOSED position of the damper closed
limit switch. In this case the VER
OFF⁄CL
MM is deactivated because the damper is OPEN.
Power Source
1b, 1a listed contactor
Damper
Open
Power
ELR-47K
(use 3.9K listed ELR with FZM-1)
N/O
COM
Power Return
Listed
24 VDC
Power Source
FMM-1
dmo-nf4a-fs-2.wmf
SLC Loop
1a listed
contactor
CON
ON/OP
CM
(activated)
VER
OFF/CL
MM
(activated)
Limit Switch
for closed
position
Damper
Closed
Power
AC
MOTOR
DAMPER
OPEN
FCM-1
Energy
Management
System
*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.
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