9-7
Chapter 9. MAINTENANCE & TROUBLESHOOTING
■
The controller does not change to MANUAL mode by pressing
A/M
in the
basic display state
Cause
Remedy
ON-OFF control is being carried out by 0D and
6D outputs.
Set PID set
P
setting in use to other than 0.0 and switch
to PID control from ON-OFF control.
3-position-proportional control is selected by 3D
output.
Set setup data
C
4
5
setting to 0 and switch to PID con-
trol from 3-position-proportional control.
Key lock is enabled.
Set variable parameter
L
O
C
setting to 0 to 2.
■
The controller does not change to AUTO mode by pressing
A/M
in the
basic display state
Cause
Remedy
Key lock is enabled.
Set variable parameter
L
O
C
setting to 0 to 2.
■
Auto-tuning (AT) is not started by pressing
AT
in the basic display state
Cause
Remedy
The controller is in the READY mode.
Press
RUN/HOLD
to set the controller to the RUN mode.
The controller is in the MANUAL mode.
Press
A/M
t o set the controller to the AUTO mode.
Input 1 over-range
Correctly wire input 1 to correct input state.
Controller set not to execute AT.
Set variable parameter
A
T
setting to other than 0.
The controller is set to programmer functions by
5G output.
Set setup data
C
1
8
setting to 0.
This is a heat/cool model.
AT cannot be executed by 3D and 5K outputs.
Key lock is enabled.
Set variable parameter
L
O
C
setting to 0 to 2.
■
Auto-tuning (AT) is not canceled by pressing
AT
in the basic display
state
Cause
Remedy
Key lock is enabled.
Set variable parameter
L
O
C
setting to 0 to 2.
■
Setting group other than “
P
A
R
A
” is not displayed by pressing
PARA
by
selecting the setting group in parameter set state
Cause
Remedy
Key lock is enabled.
Set variable parameter
L
O
C
setting to 0, 1 or 3.
