Controlli MVH56E - DIAGNOSTIC - ALARM FUNCTIONS; Automatic Calibration DIP N. 7 OFF; Manual Calibration DIP N. 7 ON

DIAGNOSTIC - ALARM FUNCTIONS
N°
LED
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/
rst installation
The actuator
pushes/pulls 5 times
(unexpected stall) trying
to remove the possible
obstacle. After 5 tries
an alarm is signalled
(RED LED ON) 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. Alarm is
signalled (RED LED
ON) and the actuator
moves to the initial
position and then it
does not respond to
the control signal
Valve with a
stroke length
lower than
5mm
Remove
power and
power up
again
2 RED ON
Stroke
longer than
60mm
Calibration/
rst installation
The actuator exits the 60
mm stroke range and it
moves toward the new
stroke limit signalling an
anomaly (RED LED ON).
The actuator does not
calibrate the stroke
The actuator pushes/
pulls 2 times against
endpoint during
calibration. Alarm is
signalled (RED LED
ON) and the actuator
moves to the initial
position and then it
does not respond to
the control signal
Valve with a
stroke length
longer than
60mm
Remove
power and
power up
again
3
RED Quick Blinking +
GREEN ON
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; During these 10s
RED LED is ON
The actuator tries
5 times against the
new stall condition.
At the end of the
attempts the fault will
be signalled (RED LED
ON). 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 +
GREEN ON
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;
During these 10s RED LED
is ON
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 05/2017 DBL466e Page 5