DIAGNOSTIC - ALARM FUNCTIONS
N°
LEDs
behaviour
Error
Actuator use
Actuator behaviour
Typical trouble
shooting condition
Reset
procedure
Automatic calibration
(DIP N. 7 OFF)
Manual calibration
(DIP N. 7 ON)
1
RED ON
Valve stroke
less than
5mm
Calibration/
first
installation
The actuator pushes/pulls 2
times (unexpected stall) trying
to remove the possible obstacle.
After 2 tries an alarm is signalled
and the actuator moves to initial
position and does not respond to
control signal. Stroke value is not
updated because out of range
The actuator pushes/pulls 2
times against endpoint during
calibration and the actuator
moves to the initial position and
then it does not respond to the
control signal. The actuator keeps
the previous stroke
Valve with a stroke
length lower than
5mm
Remove
power and
power up
again
2
RED quick
bl
GREEN ON
Stroke longer
than 60mm
Calibration/
first
installation
The actuator exits the 60mm
stroke range and it moves toward
the new stroke limit signalling an
anomaly. The actuator pushes/
pulls 2 times against the new
stroke limit, then it goes back to
the initial position still signalling
the anomaly until it is not within
60mm. The actuator does not
calibrate the stroke after 10s
(wrong range)
The actuator exits the 60mm
stroke range and it moves toward
the new stroke limit signalling an
anomaly. The actuator pushes/
pulls 2 times against the new
stroke limit, then it goes back to
the initial position still signalling
the anomaly until it is not within
60mm. The actuator does not
calibrate the stroke after 10s
(wrong range)
Valve with a stroke
length longer than
60mm
Remove
power and
power up
again
3
RED Quick
Blinking
Unexpected
stall
within the
calibrated
stroke range
normal
operation
The actuator tries 5 times against
the new stall condition and then
after 10s the actuator updates
the new stroke length
The actuator tries 5 times against
the new stall condition. At the
end of the attempts the fault
will be signalled. The actuator
does not update the new stroke
length, but after 60s makes
other attempts to verify the stall
condition
Valve stuck
Inverted
control
signal
4
RED Quick
Blinking
Stroke
longer than
expected
Normal
operation
The actuator moves toward the
new stall condition with a lower
speed; after 10s the actuator
updates the new stroke value
The actuator moves toward the
new stall condition with a lower
speed; after 10s the actuator
does not update the new stroke
value
Stem connection
loose or valve
damaged
Inverted
control
signal
5
RED slow
Blinking
Low Power
Voltage
Normal
operation
The actuator is still working
but performance cannot be
guaranteed
The actuator is still working
but performance cannot be
guaranteed
1. Wrong
transformer size
Correct
Voltage
Power
2. Unstable power
6
RED slow
Blinking
High Power
Voltage
Normal
operation
The actuator is still working
but performance cannot be
guaranteed
The actuator is still working
but performance cannot be
guaranteed
1. Wrong
transformer size
Correct
Voltage
Power
2. Unstable power
1
st
Issue rev. b
04/2018
DBL564e
Page 6
