www.hysecurity.com SDC Inputs & Wiring D0536 Rev. C 4-9
Relay No. Name Description Wire
Connection
19
Flasher Relay Flashes lights once per second. The relay is constantly pulsing
except when the open limit switch is triggered.
* Preferred connection is Relay 2, a solid state relay.
Relay 1 or 2*
20
Free Exit Loop Vehicle Detector
output
Active when the Free Exit Loop is tripped. Relay 1
21
Inside Obstruction Vehicle Detector
output
Active when the Inside Obstruction loops is tripped. Relay 1
22 Reset Loop Detector output Active when the Reset loop detector is tripped. Relay 1
23 External Latching Gate Lock Output Not used in the Smart DC Controller. Relay 1
24 Gate at Partial Open Position Active when the partial open position is reached or exceeded. Relay 1
25
DC Power Alert Deactivates when the software detects a low battery voltage (be-
low 21VDC, but greater than 18VDC) for a duration of 2 seconds
or more. To slow battery drain, accessory power loads are shed.
Relay 1
26
Free Vehicle Detector Pulse Activates when the Exit Loop Detector is tripped and causes a
250mS pulse output to occur.
Relay 1
27
Not Open (requires AC power) When AC power is detected, this relay activates when the gate
in NOT on the open limit. If AC power fails, or the gate is on the
open limit, the relay is deactivated.
Relay 1
28
Flasher (requires AC power) Controlsashinglightsthatpulse500mspersecond.Therelay
is constantly activating except when the open limit switch is
triggered or AC power fails.
Relay 1
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