Bernard Controls AQL Series User Manual

English
11
If the LED continues to blink after the automatic process, it is
indicating the following errors:
Times
blinking
2
3
4
5
Configuration
was not
correctly
loaded
4/20 mA signal
is lost
Actuator is
blocked
during travel
• Rotation direction is
wrong
• Actuator got to a
position out of
travel limits
• Actuator is pumping
How to set closing direction and fallback position
You can use SW2 dip switches to set closing direction (dip switch 1)
and fallback position (dip switches 2 & 3) in case signal is lost.
This setting must be done with power off.
Closing
direction
1
Fallback
position
3
ON
OFF
ON
Clockwise
2
ON
Stayput Closed
OFF
Counter-
clockwise
OFF
Open Stayput
8 TORQUE LIMITING DEVICE
In case of excessive torque on the actuator, a torque limitation
system shuts down actuator.
A LED behind switch board is lighting up when this protection is ON.
How to re-start the actuator if torque limiter went off
1. Switch power supply off.
2. Check if the issue comes from valve (stiff point or jamming)
or mechanical stops (over-travel or wrong mechanical stop
settings).
3. Fix the issue.
4. Switch power supply on and electrically operate actuator in
both directions.

LED remains lit a few seconds after power supply is switched off.
Wait those few seconds before switching power supply on again and
operating actuator.
12

Bernard Controls AQL Series Specifications

General

Brand	Bernard Controls
Model	AQL Series
Category	Switch
Language	English