Eaton TC 48, User Manual

Page: 54 / 56

Error
Code
Display
Symbol
Error Description
Corrective Action
Illegal setup values been used:
Before COOL is used for OUT2,
DIRT ( cooling action ) has already
been used for OUT1, or PID mode
is not used for OUT1 ( that is PB
= 0, and / or TI = 0 )
4
Communication error: bad function
code
10
Correct the communication
software to meet the protocol
requirements.
Communication error: register
address out of range
11
Don't issue an over-range
register address to the slave.
Communication error: attempt
to write a read-only data or a
protected data
14
Don't write a read-only data or a
protected data to the slave.
Communication error: write a
value which is out of range to a
register
15
Don't write an over-range data
to the slave register.
26
Fail to perform auto-tuning
function
EEPROM write error
29
Return to factory for repair. Return to factory for repair.
Input sensor break, or input
current below 1 mA if 4-20 mA is
selected, or input voltage below
0.25V if 1 - 5V is selected
39
Replace input sensor.
40
A to D converter or related
component(s) malfunction
Return to factory for repair.
Check and correct setup values of
OUT2, PB, TI and OUT1. IF OUT2
is required for cooling control, the
control should use PID mode ( PB
= 0, TI = 0 ) and OUT1 should
use reverse mode (heating action)
, otherwise, don't use OUT2 for
cooling control.
1.The PID values obtained after
auto-tuning procedure are out
of range. Retry auto-tuning. 1.The PID values obtained after
auto-tuning procedure are out
of range. Retry auto-tuning.
2.Don't change set point value
during auto-tuning procedure. 2.Don't change set point value
during auto-tuning procedure.
3.Use manual tuning instead of
auto-tuning. 3.Use manual tuning instead of
auto-tuning.
5. Don't set a zero value for TI. 5. Don't set a zero value for TI.
4. Don't set a zero value for PB. 4. Don't set a zero value for PB.
6. Touch RESET key 6. Touch RESET key
Cold junction compensation for
thermocouple malfunction
30
Return to factory for repair. Return to factory for repair.
54
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