Pr
o
Minent
®
Page 70
Operation
Note text
Symbol
Effect
Alarm with
Remarks
Remedy
on metering on control
acknowledgement
Pause contact
Pause
Stop
Stop
No/Yes*
No further fault check
–
Pause/Hold
PI-part
frozen
Stop button
Stop
Stop
Stop
No
Relay drops out
–
During checking sensor
Basic load
Stop
No
No error processing
–
of measured variable
Measured 40 mV > buffer
Measured value high
Measured 40 mV < buffer
Measured value low
Basic load
Stop
No
Check sensor,
Probe signal too unsteady
Measured value
replace if necessary
unsteady
During servomotor setting
Position feed back wrong
Direction check
Without correct
Check connection of relay,
Upper position <40 % max. value
Final value small
adjustment the last
potentiometer. Adjust the
Lower position >30 % range
Final value big
valid values are still used
operation region of the
servomotor correctly
Fault
Fault text
Symbol
Effect
Alarm with
Remarks
Remedy
on metering on control
acknowledgement
Measured value
Checkout time exceeded
Check mV sensor
Basic load
Stop
Yes
Function defeatable
Check function of sensor
measured value
Signal exceeded/drops below value
mV input faulty
Basic load
Stop
Yes
Signal <3.0 ± 0.2 mA
Check sensor, transducer and
or >23 ± 0.2 mA
cable connection
Check sensor with error
mV calibration
Basic load
Stop
No
Metering continues in
Check sensor, replace if
faulty
case of error with unsteady necessary,
recalibrate
measured values
if necessary
Correction measured variable
Signal exceeds/drops below
te-input
Yes
Pt100 Signal > 138,5
Ω
Check sensor, transducer
value
Signal <3.0 ±0.2 mA
and cable connection
or >23 ±0.2 mA
Value last validated is used
Feed forward control
Signal drops below value
feed fwd. <4 mA
Yes
Signal <3.8 ±0.2 mA
Check sensor,
multiplicative
stop
continue
or >23 ±0.2 mA
transducer and cable
additive
continue
continue
Value last validated
connection
Signal exceeded
feed fwd. >23 mA
continue
continue
is
used
Limit transgression
mV-limit value 1
Function defeatable
Defi ne cause,
after checkout time
mV-limit value 2
reset values if necessary
Control “on”
Yes
Control “off”
Stop or
Stop
Yes
basic load
Servomotor
Position not reached
Servomotor defective
Yes
Servomotor closes
Check servomotor
Electronics error
System error
Stop
Stop
Yes
Electronic data defective
Call in servive
8.5.3
DULCOMETER
®
D1C and DULCOTEST
®
Sensor for Redox/ORP,
Troubleshooting
Controller
Redox/ORP
Possible
values
Initial value
Increment
Lower value
Upper value Remarks
Buffer values Measured valve 1 mV
-2000 mV
+2000 mV
185–265 mV 220 mV
425–505 mV 465 mV
Error message
Condition
Remarks
Measured value high
Measured value
Return to permanent display:
40 mV > buffer
Basic metering load
Measured value low
Measured value
Return to permanent display:
40 mV < buffer
Basic metering load
* Depends on whether “alarm off” or “alarm on” in “General Settings”.
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24.02.2009 11:56:07 Uhr
