RY
OD
CM2
11
50
§
max
DC 27Vmax
Open collector output
Output Deviation for PID Control [OD]
The PID loop error is defined as the
magnitude(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 C23, the [OD]
terminal signal turns on. Refer to the PID
loop operation.
Current
set value
C
23
OD
signal
Process variable
Setpoint
Option
Code
Terminal
Symbol
Function Name
Input
State
Description
4
OD
Output deviation
for PID control
ON
OFF
when PID error is more than the
set threshold for the deviation
signal
Valid for inputs:
Required setting
C13, C23
none
Notes:
¡
The default difference value is set to 10%.
To change the value, change parameter
C23 (deviation level).
Example:
when PID error is less than the
set threshold for the deviation
signal
NOTE :
The example circuit in the table above drives a relay coil. Note the use
of a diode to prevent the negative-going turn-off spike generated by the coil
from damaging the inverter's output transistor.
8-22
ENDA E-100 INSTRUCTION MANUAL
