All-O-Matic SW-350 Manuals & Support

The All-O-Matic SW-350 DC PRO is a 24 VDC brushless swing gate operator for commercial and industrial gates up to 22 ft: 2,000 lb with the 1/2 HP motor or 2,500 lb with the 1 HP motor.

It has a low-profile heavy-duty frame, a 60:1 gearbox with internal clutch, a foot pedal release and two 7 Ah backup batteries for up to 250 cycles. The SW-350 AC is discontinued, and the DC PRO is its replacement.

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.

AC units (SW-350 AC and AC2) are discontinued. Parts and manuals for them are still on this page.

Key specs

Max gate	DC PRO: 2,000 lb (1/2 HP), 2,500 lb (1 HP); 22 ft
Motor	24 VDC brushless, 1/2 or 1 HP
Open time	16 to 29 seconds per 90°
Duty cycle	Continuous
Power	115 or 230 VAC single phase, or 24 VDC solar
Gearbox	60:1 with internal clutch
Chain	#50
Battery backup	Two 12 V, 7 Ah; up to 250 cycles
Release	Mechanical foot pedal
Size	14 x 24 x 18 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.

AC models

Press RESET and count the MON-FAULT blinks to see the UL mode.
If the ERD keeps tripping, check the gate swings freely, then check the ERD jumper above MOTOR 2.

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.

The SW-350 DC PRO fits the same applications. Choose the 1/2 HP or 1 HP model by gate weight.

Identify your model

Key specs

Manuals and documents

Installation Manual

Parts List

Spec Sheet