Omron E5EK User Manual

CHAPTER 8 TROUBLESHOOTING
E5EK
8--6
8.4 Checking Operation Restrictions
With the E5EK controller, auto-tuning or self-tuning sometimes do not
operate depending on the way functions are combined. The table below
summarizes the main operating restrictions.
If the E5EK controller is not operating properly, first check whether
operating conditions violate the restrictions in this table.
R
e
s
t
r
i
c
t
i
o
n
Inoperable or Invalid Functions
R
estr
i
ct
i
on
ST Execution AT Execution Limite r Function Other
At analog input
¢
At heating and
cooling control
¢
40%AT
At position-pro-
portional control
¢
40% AT
Manipulated variable ON/OFF control
At ON/OFF
control
¢ ¢
Manipulated variable
MV change rate
ST = ON
¢
Manipulated variable
MV change rate
SP ramp function
At AT execution
--
MV change rate Paramete r setting
At stop
¢ ¢
Manipulated variable
MV change rate
Items marked by a “x” indicates combinations of conditions not acceptable during ST or AT execu-
tion.
Items marked by “ --- ” are impossible combinations.

Omron E5EK Specifications

General

Brand	Omron
Model	E5EK
Category	Controller
Language	English