Panasonic AKT7112100J Digital Temperature Controller AKT7112100J Fiche De Données

20 

The PV display keeps 
indicating the value which 
was set during Scaling low 
limit setting. 

• Check whether the input signal source for DC voltage (0 to 5V DC, 

0 to 10V DC) and DC current (0 to 20mA DC) is disconnected. 

How to check whether the input signal wire is disconnected 
[DC voltage (0 to 5V DC, 0 to 10V DC)] 
If the input to the input terminals of the instrument is 1V DC and 
if the value corresponding to 1V DC is indicated, the instrument 
is likely to be operating normally, however, the signal wire may 
be disconnected. 
[DC current (0 to 20mA DC)] 
If the input to the input terminals of the instrument is 1mA DC and
if the value corresponding to 1mA DC is indicated, the instrument 
is likely to be operating normally, however, the signal wire may be
disconnected. 

• Check whether the input lead wire terminals for DC voltage (0 to 

5V DC, 0 to 10V DC) or DC current (0 to 20mA DC) are securely 
mounted to the instrument input terminals. 

The indication of PV display 
is abnormal or unstable. 

• Check whether sensor input or temperature unit (  or  ) is correct. 

Select the sensor input and temperature unit (  or  ) properly. 

• Sensor correcting value is unsuitable. Set it to a suitable value. 
• Check whether the specification of the sensor is correct. 
• AC leaks into the sensor circuit. Use an ungrounded type sensor. 
• There may be equipment that interferes with or makes noise near

the controller.    Keep equipment that interferes with or makes   
noise away from the controller. 

[

] is indicated on  

the PV display. 

• Internal memory is defective. 

Please contact our agency or us. 

Unable to set SV, P, I, D, 
proportional cycle, alarm 
value, etc. 
The values do not change 
by the 

, 

 keys. 

• Set value lock (Lock 1 or Lock 2) is selected. 

Release the lock selection. 

• During PID auto-tuning or auto-reset 

Cancel the auto-tuning if necessary. 
Auto-reset ends 4 minutes after starting. 

The setting indication does 
not change within the input 
range even if the 

, 

  keys are pressed, and 

new values are unable to be set. 

• Scaling high limit or low limit may be set at the point where the 

value does not change. 
Set it to a suitable value while in Auxiliary function setting  
mode 2. 

 

Temperature does not rise. 
 

• Sensor is out of order. Replace the sensor. 
• Check whether the sensor is securely mounted to the  

instrument input terminal.  
Check whether control output terminals are securely  
mounted to the actuator input terminals. 
Mount the sensor or control output terminal securely. 

• Check whether the wiring of sensor or control output terminals is correct.

The control output remains 
in an ON status. 

• OUT low limit value is set to 100% or higher in Auxiliary function 

setting mode 2.    Set it to a suitable value. 

The control output remains 
in an OFF status. 

• OUT high limit value is set to 0% or less in Auxiliary function 

setting mode 2.    Set it to a suitable value. 

• For all other malfunctions, please contact our main office or dealers. 
 

 

Matsushita Electric Works, Ltd.      Automation Controls Business Unit 
Head Office : 1048 Kadoma, Kadoma-shi, Osaka 571-8686, Japan 
Telephone  : Japan (81) Osaka (06) 6908-1050 
Facsimile  : Japan (81) Osaka (06) 6908-5781