N700E INSTRUCTION MANUAL
5-27
Output Deviation for PID Control [OD]
The PID loop error is defined as themagnitude(absolute value)
of the difference between the Set point (target value) and the
process Variable (actual value).
When the error magnitude exceeds the press value for C24,
the [OD] terminal signal turns on.
Refer to the PID loop operation.
Option
Code
Terminal
Symbol
Function Name
Input
State
Description
4
OD
Output deviation
for PID control
ON
When PID error is more than theset threshold
for the deviation signal
OFF
When PID error is less than the set threshold
for the deviation signal
Valid for inputs:
C13, C14, C15, C16, C17, C24
Required setting
4
Notes:
•The default difference value is set to 10%.
To change the value, change parameterC24.
(deviation level)
•Output terminal RN0-RN1 is a relay contact a.
In case of contact b, setup C16.
•Output terminal RN1-RN2 is a relay contact a.
In case of contact b, setup C17.
PID control
Deviation
signal
C24
Target value
Feedback value