Spirax Sarco SP7-20, Инструкция по установке и обслуживанию, Страница: 50 / 56

IM-P706-03 CTLS Issue 1
50
SP7-20 Smart Positioner
6.3 Alarm codes
Error code Possible cause Impact Troubleshooting
ALARM 1 Leakage between
positioner and actuator
Depending on how well the leakage can
be compensated, small control actions
are required at regular intervals.
Check the piping.
ALARM 2 The setpoint current is
outside the permissible
range, i.e. it is < 3.8 mA or
> 20.5 mA.
- Check the power
source.
ALARM 3 Alarm of the zero monitor.
The zero position has
shifted by more than 4 %.
–
In control mode, a position outside the
valve range can only be reached by
moving to the limit stops, as the setpoint
is limited from 0 to 100 %
Correct the mounting.
ALARM 4 Controlling is inactive,
because the device does
not operate in control mode
or the binary input is active.
The controller does not follow the
setpoint.
Switch to control
mode or switch off the
binary input.
ALARM 5 Positioning timed out.
The settling time needed
exceeds the configured
stroke time.
None, or adaptive control is performed (in
adaptive mode).
Ensure that
•the actuator is not
blocked.
•the supply
air pressure is
adequately high.
•the specified time
limit is higher than
1.5 times the longest
stroke time of the
actuator.
If adaption cannot run
uninterruptedly for
an actuator, adaption
should be switched on
until the alarm does
not occur anymore
during controlling
actions.
ALARM 6 The defined limit value for
the stroke counter has been
exceeded.
- Reset the counter
(only possible via a
connected PC with
suitable software).
ALARM 7 The specified limit value for
the travel counter has been
exceeded.
- Reset the counter
(only possible via a
connected PC with
suitable software).