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)
1RED ON
Valve stroke
less than
5mm
Calibration/rst
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 LED
quick
blinking +
GREEN ON
Stroke longer
than 60mm
Calibration/rst
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
3RED 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
4RED 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
5RED 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
6RED 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
1aEmissione / 1st Issue rev. d 03/2020 7 DIM266
