Process controller
Setting of control characteristics
10
Function library
10.10
10.10.1
L
10.10-1
EDS82EV903-1.0-11/2002
10.10 Process controller
10.10.1 Setting of control characteristics
The process controller serves to put up control loops for controlling e.g. speed,
pressure, temperature, flow rate, humidity, level or dancer position.
The process controllerrequires asetpoint and an actualvalue(e.g.from asensor).
If setpoint and actual value are selected as analog values (potentiometer, PLC),
the controller must be equipped with an application I/O to build up a control
circuit.
Codes for parameter setting
Code Possible settings IMPORTANT
No. Name Lenze Selection
C0070 Process controller
gain
1.00 0.00
= P component not
active
{0.01} 300.00 ^
10.10-1
C0071 Process controller
readjust me nt time
100 10 {1} 9999
= I component not
active
^
10.10-1
C0072 Differential
component of
process controller
0.0 0.0
= D component not
active
{0.1} 5.0 ^
10.10-1
C0074 Process controller
influence
0.0 0.0 {0.1 %} 100.0 ^
10.10-1
C0238 Frequency 2
0 No precontrol (only process controller) Process controller has full influence
^
v
precontrol
1 Precontrol (total setpoint + process controller) Process controller has limited influence
10.10-1
2 No precontrol (only total setpoint) Process controller has no influence (not
active)
^
10.10-5
Total setpoint (PCTRL1-SET3) = Main
setpoint + additional setpoint
1. Control features must be coarsely adjusted according to the guide values in
the following tables.
2. Fine adjustment:
– Set C0070, C0071, and C0072 so that in the event of setpoint and actual
value changes the target value can be reached quickly and with minimum
overshooting.
Value in C0071 Resulting readjustment time T
r
10 ... 5000 10 ms ... 5000 ms
5000 ... 6000 5 s ... 10 s
6000 ... 7000 10 s ... 100 s
7000 ... 8000 100 s ... 1000 s
8000 ... 9998 1000 s ... 9998 s
Description
Adjustment
Scaling C0071
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