VDOT-ASD-100 Aspiration Detector
Velocity Detection
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VDOT-ASD-100 Aspirating Smoke Detector User’s Manual V1
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Relay Connections
There are 7 configurable relays on the termination board.
l
Isolated (NO/NC)
l
Fault (NO/NC)
l
Alert (NO)
l
Action (NO)
l
Fire-1 (NO)
l
Fire-2 (NO)
l
Aux (NO)
Note: NO=Normally Open
NC=Normally Closed
Com=Common
The relay rating is 2A@30Vdc. If load connected is more than the relay rating, a transfer
relay suitable for the rating should be used.
Every relay has its indicator (LED) on board to indicate it’s on/off status. It’s easy for the
user to know the relay status and to trouble shoot if the connected device doesn’t go
out properly.
All relays are configurable to one of the following functions: Alert, Action, Fire 1, Fire 2,
Fault, Isolate, and Auxiliary. The relay output function printed on the termination board
is the factory default setting. Users can change the relay function using front panel
display or the Management computer Software to change the setting. However, the
second relay, which circuit is designed to normally closed to give a trouble signal when
the device is powered off. Care should be taken for the relay’s NO or NC connection
when changing relay functions.
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GPI, General Purpose Input
There are eight General Purpose Input terminals on VDOT-ASD-100 termination board.
Those inputs are designed to monitor the status of the connected devices. The connected
devices monitored by the GPI can be just a button, a fault relay from the power supply, or
even alarm relay from other detector. Short circuit the pair of the input pins makes ASD to
activate associated function defined in the GPI settings. There are 16 possible functions falls
in the following categories: