Error Messages
ERROR MESSAGES
Temp
Setpoint
Cycle
75% SP
Start
TUNE
TUNE
Tuning
DAC
PID
New PID
values
entered
Time
(100% output)
oS 1
oS 2
Ct A
Ct b
Ct 3
Ct 4
uS
Ct 1
Ct 2
SENSOR FAULT
Display flashing:
INPT
and
FaiL
Indicates:
thermocouple burnout RTD/Pt100 open or
short circuit or negative over-range.
Action:
Check sensor/wiring
NON-VOLATILE MEMORY ERROR
Display flashing:
DATA
and
FaiL
Action:
De-power briefly. Replace unit if problem
persists
MANUAL POWER ERROR
Display flashing:
DATA
and
FaiL
SP1 set to ON/OFF in
CYC.t
Action:
Select proportional mode
IMMEDIATE FAIL ON AUTOTUNE START
Display flashing: (setpoint),
TUNE
and
FaiL
1. No setpoint entered
Action:
Enter setpoint
2. SP1 set to ON/OFF in
CYC.T
Action:
Select proportional mode
Note:
To reset and clear error press
▲▼
together briefly to
cancel message.
FAIL LATER DURING AUTOTUNE CYCLE
The thermal characteristics of the load exceed the Autotune
algorithm limits. The failure point indicated by any display
0.0 in
TECH
eg. Ctb = 0.0 see diagram below.
Action: 1. Change the conditions. eg. raise setpoint
2. Try
TUNE
At.SP
3. Check SP1.P percentage power
(see
IMPROVING CONTROL ACCURACY)
4. If the error message persists, call CAL for advice.
READING AUTOTUNE TUNING CYCLE
RESULTS IN
TECH
1. Index to
TECH
, release
▲
or
▼
, display will
alternately display
TECH
and
Ct.A
2. Press and hold
✱
, the display will alternate
Ct.A
and value
(eg. 10.4)
3. Keep
✱
pressed and press
▲
once, the display
Ct.B
and
value (eg. 19.6)
4. Repeat step 3 above to view:
Ct 1, Ct 2, Ct 3, Ct 4, oS 1, uS
and
oS 2
.
Autotune tuning data and limits
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