WEST 8800 Operating Manual page 15

Process controller
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g
Saved alarms (Err-LED is lit) can be acknowledged and deleted with the digital
input di1/2/3, the è-key or the Ò-key.
Configuration, see page 37: ConF / LOGI / Err. r
g
If an alarm is still valid that means the cause of the alarm is not removed so far
(Err-LED blinks), then other saved alarms can not be acknowledged and deleted.
Self-tuning heating ( ADA. H ) and cooling ( ADA. C ) error status:
Error
Description
status
0
No error
3
Faulty control action Re-configure controller (inverse i direct)
4
No response of process
variable
5
Low reversal point
6
Danger of exceeded
set-point (parameter
determined)
7
Output step change
too small (∆y > 5%)
8
Set-point reserve too
small
9
Impulse tuning failed The control loop is perhaps not closed: check sensor, connections
DAC function ( DAC) error status:
Error
status
0
No error
3
Output is blocked
4
Wrong method of operation
5
Fail at Yp measurement
6
Calibration error
8800 process controller
Behaviour
The control loop is perhaps not closed: check sensor, connections
and process
Increase ( ADA. H ) max. output limiting Y. H i or decrease
( ADA. C ) min. output limiting Y. L o
If necessary, increase (inverse) or reduce (direct) set-point
Increase ( ADA. H ) max. output limiting Y. H i or reduce
( ADA. C ) min. output limiting Y. L o
Acknowledgment of this error message leads to switch-over to
automatic mode.If self-tuning shall be continued,
increase set-point (invers), reduce set-point (direct)
or decrease set-point range
(r PArA / SEtp / SP. L O and SP. H i )
and process
Description
Check the drive for blockage
Wrong phasing, defect motor capacitor
Check the connection to the Yp input
Manual calibration necessary
15
Behaviour
Error list / Mainenance manager
Operation

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