Terminal descriptions – Linear SLC User Manual
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• SLC • SLD Slide Gate Operator Installation Guide
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227968 Revision X19 8-11-2011
Terminal Descriptions
TERMINAL
GROUP
FUNCTION
AC N
24 VOLT INPUT
FACTORY CONNECTED TO 24 VAC FROM TRANSFORMER OR 
24 VDC FROM CONTINUOUS DUTY DC SUPPLY.
AC
DC -
ACCESSORY POWER
PROVIDES 24 VOLT DC POWER FOR ACCESSORIES. (.5A MAX)
DC +
RESET
RESET BUTTON
FACTORY CONNECTED TO THE CONTROLLER’S RESET BUTTON.
COMMON
C
COMM LINK
FOR 3-WIRE NETWORK CONNECTION TO SECOND OPERATOR IN DUAL GATE INSTALLATIONS.
B
A
COMMON
SINGLE BUTTON INPUT
CONNECT TO NORMALLY OPEN SWITCH FOR SINGLE BUTTON OPERATION. ALTERNATES 
BETWEEN OPEN-CLOSE OR OPEN-STOP-CLOSE DEPENDING ON PROGRAMMING.
SINGLE
COMMON
FIRE BOX INPUT
CONNECT TO NORMALLY OPEN SWITCH IN FIRE BOX FOR FIRE DEPARTMENT ACCESS.
FIRE DEPT
COMMON
OPEN INPUT
CONNECT TO NORMALLY OPEN DEVICES (KEYPAD, CARD READER, KEYSWITCH, 
TELEPHONE ENTRY SYSTEM) TO OPEN THE GATE. A CONSTANT OPEN INPUT WILL 
OVERRIDE THE MID-TRAVEL STOP AND HALT THE AUTO CLOSE TIMER UNTIL RELEASED.
OPEN
OPEN
3-BUTTON 
STATION INPUT
CONNECT TO 3-BUTTON STATION FOR OPEN-CLOSE-STOP CONTROL. A CONSTANT OPEN INPUT 
WILL OVERRIDE THE MID-TRAVEL STOP AND HALT THE AUTO CLOSE TIMER UNTIL RELEASED.
CLOSE
COMMON
STOP
COM
OPEN
OBSTRUCTION
INPUT
CONNECT TO NORMALLY OPEN DEVICES (GATE EDGE, PHOTO BEAM) TO DETECT AN 
OBSTRUCTION DURING OPENING. WHILE GATE IS MOVING, ANY OPEN OBSTRUCTION 
SIGNAL WILL CAUSE THE GATE TO STOP, REVERSE A SHORT DISTANCE, AND THEN STOP 
AGAIN. AT THIS TIME THE AUTO CLOSE TIMER IS DISABLED, AND A RENEWED INPUT 
WILL BE REQUIRED TO START THE GATE AGAIN. SHOULD THE GATE BE RESTARTED 
AND THE OBSTACLE SIGNAL OCCUR AGAIN PRIOR TO REACHING A LIMIT, THE GATE 
WILL STOP AGAIN, LOCKOUT, AND SOUND THE CONTINUOUS TONE ALARM.
O-OBS
C-OBS
CLOSE
OBSTRUCTION
INPUT
CONNECT TO NORMALLY OPEN DEVICES (GATE EDGE, PHOTO BEAM) TO DETECT AN 
OBSTRUCTION DURING CLOSING. WHILE GATE IS MOVING, ANY CLOSE OBSTRUCTION 
SIGNAL WILL CAUSE THE GATE TO STOP, THEN REVERSE AND TRAVEL TO THE FULL 
OPEN POSITION. SHOULD A OPEN OBSTRUCTION INPUT OR AN OPEN DIRECTION 
INHERENT ENTRAPMENT CONDITION OCCUR PRIOR TO THE GATE REACHING THE 
OPEN LIMIT, THE OPERATOR WILL LOCKOUT AND SOUND THE CONTINUOUS TONE 
ALARM. IF THE AUTO CLOSE TIMER IS SET, WHEN THE CLOSE OBSTRUCTION INPUT 
IS CLEARED, THE GATE WILL CLOSE WHEN THE AUTO CLOSE TIMER EXPIRES. 
COM
COM
REVERSE
CONNECT TO NORMALLY OPEN DEVICES TO CAUSE A REVERSAL WHEN THE GATE IS 
TRAVELING CLOSED. THE GATE WILL REVERSE TO THE FULL OPEN POSITION.
REV
OPEN LOOP
OPEN LOOP
CONNECT TO OPEN LOOP/FREE EXIT LOOP. THE GATE WILL OPEN 
WHEN THE LOOP IS TRIGGERED, AND REMAIN OPEN AS LONG AS 
THE LOOP IS TRIGGERED. REQUIRES LOOP DETECTOR.
OPEN LOOP
REVERSE LOOP
REVERSE LOOP
CONNECT TO REVERSE LOOP. TRIGGERING THE LOOP WILL CAUSE A 
REVERSAL WHEN THE GATE IS TRAVELING CLOSED. THE GATE WILL REVERSE 
TO THE FULL OPEN POSITION. REQUIRES LOOP DETECTOR.
REVERSE LOOP
SHADOW/RESET LOOP
SHADOW/RESET LOOP
CONNECT TO SHADOW/RESET LOOP TO KEEP THE GATE IN ITS FULLY OPEN 
POSITION AS LONG AS THE SIGNAL IS PRESENT. USED TO KEEP GATE OPEN 
WHILE VEHICLE IS PASSING THROUGH. REQUIRES LOOP DETECTOR.
SHADOW/RESET LOOP
-
ALARM
FACTORY CONNECTED TO THE ALARM BEEPER.
+
N.O.
AUX RELAY
FOR CONNECTION TO AUXILIARY DEVICES (MAGNETIC LOCK, SOLENOID LOCK, 
STROBE LIGHT) FOR ACTIVATION (OR DEACTIVATION) DURING GATE OPERATION.
COM
N.C.
+
24 VOLT SOLAR PANEL
FOR CONNECTION TO 24 VOLT SOLAR PANEL FOR BATTERY CHARGING.
-
+
24 VOLT BATTERY
FACTORY CONNECTED TO BATTERIES IN DC MODEL OPERATORS.
-
