Manual

Name
Description Cause Possible remedial action
LooP
Control loop alarm
(LOOP)

Input signal defective or not
connected correctly

Output not connected correctly

Check heating or cooling circuit

Check sensor and replace it, if
necessary

Check controller and switching
device
AdA.H
Self-tuning heating
alarm
(ADAH)

See Self-tuning heating error
status

see Self-tuning heating error
status
AdA.C
Self-tuning heating
alarm cooling
(ADAC)

See Self-tuning cooling error
status

see Self-tuning cooling error
status
LiM.1
stored limit alarm 1

adjusted limit value 1 exceeded

check process
Lim.2
stored limit alarm 2

adjusted limit value 2 exceeded

check process
Lim.3
stored limit alarm 3

adjusted limit value 3 exceeded

check process
Inf.1
time limit value
message

adjusted number of operating
hours reached

application-specific
Inf.2
duty cycle message
(digital ouputs)

adjusted number of duty cycles
reached

application-specific
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 or the.
Configuration, see page 36: 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.
Not applicable to heating current alarm.
Error status:
Self-tuning heating ( ADA.H) and cooling ( ADA.C ) error status:
Error status
Description Behaviour
0
No error
3
Faulty control action Re-configure controller (inverse i direct)
4
No response of process
variable
The control loop is perhaps not closed: check sensor,
connections and process
5
Low reversal point Increase ( ADA.H) max. output limiting Y.Hi or
decrease ( ADA.C) min. output limiting Y.Lo
6
Danger of exceeded set-point
(parameter determined)
If necessary, increase (inverse) or reduce (direct)
set-point
7
Output step change too small
(
{y > 5%)
Increase ( ADA.H) max. output limiting Y.Hi or
reduce ( ADA.C) min. output limiting Y.Lo
8
Set-point reserve too small Increase set-point (invers), reduce set-point (direct)
or increase set-point range
(r PArA / SEtp / SP.LO and SP.Hi )
9
Impulse tuning failed The control loop is perhaps not closed: check sensor,
connections and process
Operation
KS50/52-1 15 Maintenance manager / Error list