Table of Contents
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Parameter description
3.12
PID-controller
Parameters of this group are hidden unless the regulator is used as frequency reference
(P1.12= or P2.15=2)
P12.1
S
ETPOINT SOURCE SELECTION
0: fixed setpoint 1-2
1: analogue AI1
2: analogue AI2
3: fieldbus
P12.2
F
IXED
P12.3
F
IXED
Programmable setpoints. Setpoint 2 is activated with digital input defined in P4.16.
P12.4
F
EEDBACK SOURCE SELECTION
0: analogue AI2
1: analogue AI1
2: fieldbus
3: AI2-AI1 (differential)
4: temperature (only with board OPTBH, see P13.8-10)
P12.5
F
EEDBACK VALUE MIN
P12.6
F
EEDBACK VALUE MAX
Minimum and maximum feedback values, corresponding to minimum and maximum of the
signal.
P12.7
PID
GAIN
Proportional gain. If set to 100%, a variation of 10% on error causes a variation of 10% on reg-
ulator output.
P12.8
PID I
NTEGRATION TIME
Integral time constant. If set to 1s, a variation of 10% on error will cause a variation of 10% on
regulator output after 1s.
P12.9
PID D
Derivative time. If set to 1s, a variation of 10% in 1s on error causes a variation of 10% on reg-
ulator output.
P12.10
R
EGULATION INVERSION
0: direct control. Frequency increases if setpoint > feedback
1: inverted control. Frequency increases if setpoint < feedback
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S
1
ETPOINT
S
2
ETPOINT
ERIVATION TIME
vacon • 68
3
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