SCS Series Manual —
P/N 15712:L 7/18/16
145
Non-dedicated Smoke Control System Wiring Diagrams
Ratings and Wiring Diagrams
Figure 5.36 EP Damper Control, Non-dedicated System - FSCS Switch Group Type 5
Figure 5.36 depicts an EP damper in a non-dedicated system with the capability of
OPEN
control and verification of the
OPEN
state, switch
group type 5. In the above configuration, the CON
ON⁄OP
CM is activated. The CON
ON⁄OP
CM controls a normally closed contactor for the
pressure switch power line. When the CON
ON⁄OP
CM is activated, the normally closed contactor is opened. When the contactor opens, power
is cut from the pressure switch, which allows airflow to open 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 cut from the pressure switch, the damper opens. When the damper completely opens, the damper open limit switch is
CLOSED
and the damper closed limit switch is
OPEN
, indicating that the damper is in the
OPEN
position. The VER
ON⁄OP
MM monitors the
CLOSED
position of the damper open limit switch. In this case the VER
ON⁄OP
MM is activated because the damper is
OPEN
.
Airflow
PRESSURE
SWITCH
SMOKE
DAMPER
OPEN
Power
Source
Listed
24 VDC
Power Source
SLC Loop
DE
P-
NF5A
-fs-2
.wmf
Power
Return
ELR-47K
(use 3.9K listed ELR with FZM-1)
Pneumatic
Tubing
Energy
Management
System
N/O
COM
Limit Switch
for open
position
VER
ON⁄OP
MM
(activated)
FMM-1
1b listed
contact
FRM-1
CON
ON/OP
CM
(activated)
*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.