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)
FAN-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.
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