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110
SCS Series Manual —
P/N 15712:L 7/18/16
Ratings and Wiring Diagrams
Dedicated Smoke Control System Wiring Diagrams
Figure 5.3 Fan Control, Dedicated System - FSCS Switch Group Type 4
Figure 5.3 depicts a fan in a dedicated system with the capability of
ON
control and verification of the
OFF
state, switch group type 4. In the
above configuration, the CON
ON⁄OP
CM is deactivated. The CON
ON⁄OP
CM controls a normally open contact which switches power to the fan
(the contact is used when the power being switched is greater than 24 volts). When the CON
ON⁄OP
CM is deactivated, the contact is open,
thus cutting power to the fan. When power is cut to the fan, the fan is
OFF
and the sail switch is
CLOSED
, indicating no airflow in the duct. The
VER
OFF⁄CL
MM monitors the
CLOSED
position of the sail switch, which would indicate when the fan is
OFF
. In this case the VER
OFF⁄CL
MM
is activated because the fan is
OFF
and the sail switch is
CLOSED
.
Power Source
1b listed
contactor
Service
Disconnect
Switch
ELR-47K
(use 3.9K listed ELR with FZM-1)
Listed
Sail
Switch
N/O
COM
N/C
Power Return
Listed
24 VDC
Power Source
FMM-1
FCM-1
CON
ON⁄OP
CM
(deactivated)
VER
OFF/CL
MM
(activated)
FA
N-
Df4-fs-2
.wmf
SLC Loop
FAN OFF
*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.