Possible causes

• Operator gearbox disengaged

• ’DBL’ has been selected for a single-leaf installation

• Loose connection on the sensor terminals

• Installation dimensions are not according to specification

• Crimped or cut cables

• Intermittent connection between DOSS and harness

• The operators in a double leaf installation are different versions, resulting in excess current draw from one operator’s encoder sensor

• Incorrect operator has been selected

• DOSS failure

• Faulty controller

• Faulty actuator

Solutions

• Ensure that the gearbox is engaged by turning the actuator override key fully clockwise

• Ensure that ‘SGL’ is selected when prompted to select the number of leaves (if it is indeed a single-leaf installation)

• Ensure that all connections outside of the unit are secure and that the cable has not been crimped, cut or otherwise damaged

• Ensure that the harness is still securely plugged into the encoder and has not been pulled and yanked loose - as this connection is internal to the actuator, it is preferable to replace it; the operation of the encoder can be tested as follows:

- Set your multimeter to read DC voltage

- Place the negative lead on Common and the positive lead on the purple wire

- Slowly move the gate by hand (the actuator must be disengaged)

- Read the voltage between common (black) and the purple wire

- Pulses should be evident by the voltage moving between +0V and +4.5V

- Repeat for blue wire

- Ensure that both operators in a double leaf installation are the same version (e.g. v2 - VECTOR2)

• Ensure that the correct operator has been selected:

• VC for VECTOR2

• VN for VANTAGE

• VX for VERT-X

• Replace faulty DOSS encoder/controller/actuator

• Replace controller

• Replace actuator