Programming the Control
Signal Terminals
01/02 AWB8230-1413GB
98
PID control deviation signal (OD)
The relay output configured as OD is activated when a user
definable PID deviation (of the actual value from the setpoint
value) is exceeded.The OD output remains active as long as this
differential is exceeded.
X
If you configure a programmable relay output as OD, you must
also, under PNU C044, enter the threshold at which the OD
signal is activated when the value is exceeded.
X
Then, program one of the relay outputs K23-K24 or K33-K34 as
OD by entering the value 04 in the corresponding PNU (C021 or
C022) or in PNU C026 for signalling relay contacts K11-K12.
Figure 95:
Relay output K23-K24 configured as OD (PID control
deviation)
Figure 96:
Function chart for OD (PID control deviation)
a
Setpoint
b
Actual value
5...30 V
0
.
250 V
D
K23 K24
OD
PNU C044
PNU C044
OD
a
b
PNU
Name
Adjustable in RUN mode
Value
Function
WE
Normal
Extended
C044
PID regulator
deviation
–
j
0 to 100 %
If the deviation between the setpoint and actual value
exceeds the value entered here when PID control is active,
the OD signal is activated.
3.0
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