*B36, Display symbol and description for MODE
Input 2 ( IN2 ) sensor
break, or input 2
current below 1 mA if
4-20 mA is selected, or
input 2 voltage below
0.25V if 1 - 5V is
selected
Input 1 ( IN1 ) sensor
break, or input 1
current below 1 mA if
4-20 mA is selected, or
input 1 voltage below
0.25V if 1 - 5V is
selected
38
39
40
A to D converter or
related component(s)
malfunction
Error
Code
Display
Symbol
Error Description
Corrective Action
Replace input 2
sensor.
Replace input 1
sensor.
Return to factory for
repair.
*B35, PROG code description
Parameter
Value
Specified product
0.XX
1.XX
2.XX
3.XX
4.XX
BTC-2500 controller
BTC-9300 controller
L91 controller
BTC-8300 controller
BTC-4300 controller
Parameter
Value
Description
X.0
Perform normal mode
X.1
X.2
X.3
X.4
X.5
Enter calibration mode
Enter auto-tuning mode
Enter failure mode
Enter manual mode
Enter sleep mode
0.X
1.X
2.X
3.X
Unlock condition
SP1, SEL1 SEL5 are unlocked
Lock all parameters except SP1
All parameters are locked
28
Memory comparison
error, different value
detected in the
EEPROM and mapped
RAM
EEPROM can't be
written correctly
29
32
Cold junction
compensation device(s)
malfunction
Key switch shorted or
related PCB circuit
shorted
33
Input 2 ( IN2 ) signal
too low
Input 1 ( IN1 ) signal
too low
Input 2 ( IN2 ) signal
too high
Input 1 ( IN1 ) signal
too high
34
35
36
37
27
Incorrect calibration
procedure or tolerance
of analog component
too big to meet
specified accuracy
Fail to perform
auto-tuning function
26
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.
3.Dont change Event
input state during
auto-tuning
procedure.
4.Use manual tuning
instead of
auto-tuning.
1.Pay more attention
to the calibration
procedures.
2.Return to factory for
repair.
1.Check and correct
the wiring and
grounding problems
to minimize the
system noise.
2.Return to factory for
repair.
Return to factory for
repair.
Return to factory for
repair.
Return to factory for
repair.
1.Check if the input 2
sensor used is
accordant with IN2
type selection.
2.Check the
connection polarity
of input 2 sensor.
3.Replace input 2
sensor.
1.Check if the input 1
sensor used is
accordant with IN1
type selection.
2.Check the
connection polarity
of input 1 sensor.
3.Replace input 1
sensor.
1.Check if the input 2
sensor used is
accordant with IN2
type selection.
2.Replace input 2
sensor.
1.Check if the input 1
sensor used is
accordant with IN1
type selection.
2.Replace input 1
sensor.
XX indicates the program version
121
UM25001H
