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126
SCS Series Manual —
P/N 15712:L 7/18/16
Ratings and Wiring Diagrams
Non-dedicated Smoke Control System Wiring Diagrams
Switch group type 8 would never be needed unless redundancy in
OFF
and
ON
control were necessary. Type 8 is used for
ON
and
OFF
control
and verification of the
ON
state. When the CON
ON⁄OP
CM is deactivated, the CON
OFF⁄CL
CM is activated, and vice versa. The CON
ON⁄OP
CM
controls a normally closed contactor which switches power to the pressure switch. The CON
OFF⁄CL
CM controls a normally open contactor
which switches power to the pressure switch. When the CON
ON⁄OP
CM is deactivated, the contactor is closed, thus supplying power to the
pressure switch. When the CON
OFF⁄CL
CM is activated, the contactor is closed, thus supplying power to the pressure switch. Both control
modules are not necessary to supply or cut the power to the damper: one is sufficient.
Switch group type 9 would never be needed unless redundancy in
OFF
and
ON
control were necessary. Type 9 is used for
ON
and
OFF
control
and verification of the
ON
and
OFF
state. When the CON
ON⁄OP
CM is deactivated, the CON
OFF⁄CL
CM is activated, and vice versa. The
CON
ON⁄OP
CM controls a normally closed contactor which switches power to the pressure switch. The CON
OFF⁄CL
CM controls a normally
open contactor which switches power to the pressure switch. When the CON
ON⁄OP
CM is deactivated, the contactor is closed, thus supplying
power to the pressure switch. When the CON
OFF⁄CL
CM is activated, the contactor is closed, thus supplying power to the pressure switch.
Both control modules are not necessary to supply or cut the power to the damper: one is sufficient.
5.4 Non-dedicated Smoke Control System Wiring Diagrams
5.4.1 Fans
Figure 5.17 Fan Control, Non-dedicated System - FSCS Switch Group Type 1
Figure 5.17 depicts a fan in a non-dedicated system with the capability of
OFF
control and verification of the
OFF
state, switch group type 1.
In the above configuration, the CON
OFF⁄CL
CM is deactivated. The CON
OFF⁄CL
CM controls a normally closed contactor which switches
power to the fan (the contactor is used when the power being switched is greater than 24 volts). When the CON
OFF⁄CL
CM is deactivated, the
contactor is closed, thus allowing the EMS to freely control the fan. In this case the EMS is
OFF
, so no power is being supplied to the fan.
When no power is supplied 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
due to the EMS. When the CON
OFF⁄CL
CM is activated, the normally closed contactor opens, thus cutting any power to
the fan that was being supplied by the EMS.
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
FCM-1
CON
OFF/CL
CM
(deactivated)
VER
OFF/CL
MM
(activated)
fa
n-
nf1
-f
s
-2
.w
m
f
SLC Loop
FAN OFF
Listed contactor
for Energy
Management
System
Energy Management System
Listed
24 VDC
Power Source
FMM-1
*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.