RKC INSTRUMENT RB Series User Manual

9. TROUBLESHOOTING
IMR02C15-E4
9-7
Continued from the previous page.
Problem Probable cause Solution
Autotuning (AT) function not
activated
Requirements for performing
the Autotuning (AT) function
are not satisfied.
Satisfy the requirements for
performing the Autotuning (AT)
function by referring to
6.2 Autotuning (AT) (P. 6-8).
Autotuning (AT) suspended Requirements for suspending
the Autotuning (AT) function
are established.
Identify causes for Autotuning
(AT) suspension by referring to
6.2 Autotuning (AT) (P. 6-8)
and then remove them.
Then, execute the Autotuning
(AT) function again.
Acceptable PID values can not
be calculated by Autotuning
(AT)
The Autotuning (AT) function
does not appropriately meet the
characteristics of the controlled
object.
Set PID constants manually.
A temperature change (UP
and/or Down) is 1 °C or less per
minute during Autotuning.
Autotuning (AT) cannot be
finished normally
Autotuning (AT) is activated
when the set value is around the
ambient temperature or is close
to the maximum temperature
achieved by the load.
Set PID constants manually.
Output does not change. The Output limiter is set. Change the Output limiter
setting by referring to Output
limiter (high/low) (P. 8-38).
However, this is limited only to
when the Output limiter setting
can be changed.

RKC INSTRUMENT RB Series Specifications

General

Brand	RKC INSTRUMENT
Model	RB Series
Category	Temperature Controller
Language	English