Table 6: Programmable User Relays
Relay No.
Name
Description
Wire
Connection
18
DC Power Failure output
DC operators only.
The relay activates when the battery power
is very low, but the output ceases when the battery is dead. The
relay is triggered when the battery is less than 20 volts.
Relay 1
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
(below 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)
Controls flashing lights that pulse 500ms per second. The relay
is constantly activating except when the open limit switch is
triggered or AC power fails.
Relay 1
r
evenue
C
ontrol
p
arkIng
a
pplICatIons
Additional mechanical relay options are shown in Table 5. Any of the options can be configured through the
relays on the Smart DC Controller. If you need additional mechanical relay terminals, an optional extended
relay module with 8 terminals is available from HySecurity.
NOTE:
System baud rate: 38,400
Table 7: Programmable User Relays, Revenue Control
Table 7: Programmable User Relays, Revenue Control Parking Applications
Relay No.
Name
Description
Wire Connection
29
Outer Arming Loop Active Output
OALD
Input. Interlocks an entry device to prevent
pedestrian use. This output is active whenever the
Outer Arming Loop Detector is tripped.
NOTE:
If
the Center Loop is tripped before the Outer Arming
Loop (indicating a vehicle is exiting the facility), this
relay will not energize.
R1, R3 through R10
30
Inner Arming Loop Active Output
IALD
If the Center Loop is tripped before the Inner Arming
Loop (indicating a vehicle is entering the facility), this
relay will not energize.
R1, R3 through R10
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SDC Inputs & Wiring
MX3650-01 Rev. D
41
