Non-Dedicated Damper Control - Simplex 4100U Application Manual

Non-Dedicated Smoke Control System Wiring Diagrams,
Non-Dedicated
Damper Control
Feedback of the closure is accomplished using a 4090-9120 6-Point I/O Module to monitor the
closed position limit switch on the damper. The module also communicates with the Simplex
FACP via IDNet. Wiring from the module to the control relay is unsupervised, so it must be
mounted within three feet of the relay/damper in accordance with NFPA 72.
The figure below shows non-dedicated motorized damper control using the 6-Point I/O Module.
INPUT 1
INPUT 2
IDNet SLC
FROM FACP
6.8 K 1/2 W EOLR
(Per Installation Instructions, 574-876)
Figure 4-6. Non-Dedicated Motorized Damper Control
The two relay circuits of the 6-Point I/O Module are used, one to control opening the damper and
the other to control closing it. Relays [A] and [B] are activated to close the damper. One output
circuit controls Relay [A] to override the Energy Management System (EMS) and provide power
to the motor to close the damper. Relay [B] insures that no open power is provided to the motor
from the EMS. The other output circuit works in exactly the opposite fashion to control the
opening of the damper. The damper position is monitored by the two supervised inputs of the
6-Point I/O Module.
The wiring between the 6-Point I/O Module output circuits and the relays is unsupervised, so the
6-Point I/O Module must be mounted within three feet of the relays/dampers in accordance with
NFPA 72. The wiring to the limit switches is supervised, so no such restriction exists with the
monitor circuits.
1A @ 30 VDC
or
1/4 A @ 120 VAC
+24V
FROM
FACP
0V
(A)
COMM
N/O
COMM
N/O
OPEN POSITION
LIMIT SWITCH
N/O
COMM
SMOKE DAMPER
N/O
COMM
CLOSED POSITION
LIMIT SWITCH
4-11
Continued
POWER
SOURCE
EMS
LISTED
RELAY
(N/O)
LISTED
RELAY
(B)
(N/C)
LISTED
RELAY
(N/C)
LISTED
RELAY
(N/O)
DAMPER
OPEN
DAMPER
POWER
CLOSED
POWER
RETURN
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