All-O-Matic SL-90 DC PRO Manuals & Support

The All-O-Matic SL-90 DC PRO is a 1/2 HP, 24 VDC slide gate operator for gates up to 50 ft and 1,600 lb. A brushless motor drives #41 chain through a 20:1 gearbox at 6 to 12 in per second.

It has a compact low-profile frame, a mechanical foot pedal release and two 7 Ah backup batteries for about 150 cycles on a 1,000 lb gate. The ALL-BLDC PRO board has an LCD, wireless primary and secondary and solar charging.

Identify your model

The model and serial number are on the label inside the control box. DC PRO units have the ALL-BLDC PRO board with an LCD display. Earlier DC units have an LED-only board; use the earlier board manual below for those.

Key specs

Max gate	1,600 lb / 50 ft
Motor	24 VDC brushless, 1/2 HP
Speed	Adjustable 6 to 12 in per second
Duty cycle	Continuous
Power	115 or 230 VAC single phase, or 24 VDC solar
Gearbox	20:1 with internal disconnect
Chain	#41 (20 ft included)
Battery backup	Two 12 V, 7 Ah; about 150 cycles on a 1,000 lb gate
Release	Mechanical foot pedal
Size	15.5 x 18.5 x 16 in
Temperature range	-40 to 160 °F

Manuals and documents

Troubleshooting

The ALL-BLDC PRO control board has an LCD and input LEDs. Note which LEDs are on before you change any settings.

Gate does not run and the ALARM LED is on

The gate hit an obstruction twice before it reached full close, and the operator shut down.
Press the red RESET button next to the radio connector, then check that the gate is not bound up or jammed.
Retest the ERD (obstruction) sensitivity after you clear the cause.

Gate does not run

STOP LED on: the STOP input is open. It is a normally closed input, so check the device or the jumper.
FP_DISABLE LED on: the foot pedal release is down. Lift it to clear the kill switch.
MON_FAULT LED on: a monitored photo eye or edge is missing or faulty. The gate then runs only on constant pressure.

Opening or closing LED is on but the gate does not move

If the AC PWR LED blinks, replace the fuse at the bottom right of the board.
Check that the gate moves freely and the limits are set correctly.
Check that the motor harness is plugged in tight with no loose wires.

MODE LED blinks

1 blink every 2 seconds: motor sensor feedback problem. Check the motor harness.
2 blinks: motor overload.
3 blinks: the gate is jammed.

No power or slow gate

AC PWR_ON LED off: check main power, the AC power switch and the 10 A fuse on the EMI board. If the fuse blows again, check the bridge rectifier.
Gate runs slow: set the variable speed to 100%, then relearn the soft stop. Put the gate on the closed limit, press and release RESET, and run one full cycle without stopping.

Common questions

UL 325 (2018) boards need monitored entrapment devices for the open and close directions. If a device is missing or faulty, the MON_FAULT LED lights and the gate runs only on constant pressure. Wire monitored photo eyes or edges, then press RESET.

Press down the foot pedal release on the operator. The pedal also cuts power to the motor, so lift it before you run the gate again.

It uses two 12 V, 7 Ah batteries in the control box. Check battery voltage on the LCD, and replace both batteries together when they no longer hold a charge.

The operator shuts down after two obstructions before full close. Clear the obstruction, then press the RESET button next to the radio connector.

Identify your model

Key specs

Manuals and documents

Installation Manual

Parts List

Spec Sheet

Brochure

Other documents