Power Electronics SD700 Series User Manual

POWER ELECTRONICS
SD700
DESCRIPTION OF PROGRAMMING PARAMETERS
33
4.6. Group 6 – G6: PID Control
Parameter /
Default Value
Name /
Description
Range
Function
Set on
RUN
1 SEL REF=MREF
G6.1 / Source
selection for
introducing
reference signal
NONE
AI1
AI2
RESERV
MREF
LOCAL
LocPID
COMMS
It allows user to select the reference source for the setpoint of the PID regulator.
OPTION
FUNCTION
NONE
Source disabled.
AI1
PID setpoint introduced by Analogue Input 1.
AI2
PID setpoint introduced by Analogue Input 2.
RESERV
Reserved for future use.
MREF
PID setpoint introduced by Digital Inputs
configured as Multi-references.
LOCAL
PID setpoint introduced by keypad. Value can be
adjusted in screen 'G3.3 LOCAL SPD'.
locPID
PID setpoint introduced by keypad. Value is set in
'G6.2 PID LOC'. It allows user to have two speed
references because 'G3.3 LOCAL SPD' is not
modified.
COMMS
PID setpoint introduced by communications
NO
2 PID LOC=+100.0%
[5]
PID LOCAL SETPOI
G6.2 / PID local
reference
+0.0% to
+400%
When ‘locPID’ is set as setpoint source, the reference introduced by keypad will
be memorized in this parameter. The value of the parameter 'G3.3 LOCAL SPD' is
not modified and it is available if we want to use alternative speed reference.
YES
3 SEL FBK=AI2
G6.3 / Selection
of feedback
signal source
NONE
AI1
AI2
AI1+AI2
COMMS
MtrTrq
AbsMTq
Mtr I.
MtrPwr
BUSVdc
PhiCos
To select the source of the feedback signal for the PID control loop.
OPTION
FUNCTION
NONE
The PID function is not active
AI1
Feedback signal through the Analogue Input 1
AI2
Feedback signal through the Analogue Input 2
AI1+AI2
Feedback will be the addition of the signals
introduced through the Analogue Inputs 1 and 2
COMMS
Feedback signal through communications
MtrTrq
Motor torque
AbsMTq
Absolute motor torque
Mtr I.
Motor output current
MtrPwr
Motor output power
BUSVdc
Bus voltage
PhiCos
Phi Cosine
NO
4 GAIN Kp=8.0
PID PROPORTIONAL
G6.4 /
Proportional gain
of PID control
0.1 to 20
It allows setting the proportional gain value of the PID regulator. If you need a
higher control response, increase this value.
Note: If this value is increased too much, a higher instability in the system can be
introduced.
YES
5 INTEGRAL = 0.1s
PID INTEGRAL
G6.5 / Integration
time of PID
control
0.1 – 1000s,
Max
It allows setting the integration time of the PID regulator. If you need a higher
accuracy you should increase this value.
Note: If this value is increased too much, the system can become slower.
YES
6 DIFFEREN = 0.0s
PID DIFFERENTIAL
G6.6 / Derivation
time of PID
control
0.0 – 250s
It allows setting the derivate time of the PID regulator. If you need a higher
response, you can increase this value.
Note: If this value is increased too much, accuracy can decrease.
YES
7 INVERT PID=N
G6.7 / PID output
inversion
N
Y
It allows inverting the PID output of the drive.
OPTION
FUNCTION
N=NO
PID regulator responds in normal mode, that
means, when the feedback value is above the
reference signal value, speed will be decreased.
If the feedback value is below the reference
signal value, speed will be increased.
Y=YES
PID regulator responds in inverse mode. So,
when the feedback value is above the reference
signal value, speed will be increased. If the
feedback value is below the reference signal
value, speed will be decreased.
NO
8 Filt FB = OFF
G6.8 / Low pass
filter
OFF,0 to
20s
It allows setting the value of a low pass filter. It will be used to soften the feedback
in the PID.
YES
9 ERR PID = +0.0%
G6.9 / PID
control error
-400% to
400%
It shows the difference between the reference 'G6.1 SEL REF' and the feedback
signal of the process 'G6.3 SEL FBK'.
YES
Note: PID functions will be set here if this function is enabled in the parameters 'G3.1 REF1 SPD=LOCAL' or 'G3.2 2
REF2 SPD=LOCAL'.
[5]
It will be available if 'G6.1 SEL REF = locPID'.

Power Electronics SD700 Series Specifications

General

Brand	Power Electronics
Model	SD700 Series
Category	Inverter
Language	English