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6.9 Compatible Adjustment Function
6-63
6
Adjustments
6.9
Compatible Adjustment Function
The
-V series SERVOPACKs have adjustment functions as explained in sections
to make machine
adjustments.
This section explains compatible functions provided by earlier models, such as the
-III Series SERVOPACK.
6.9.1
Feedforward Reference
This function applies feedforward compensation to position control and shortens positioning time.
Note: Too high value may cause the machine to vibrate. For ordinary machines, set 80% or less in this parameter.
6.9.2
Force Feedforward
The force feedforward function shortens positioning time.
The host controller finds the difference from the position reference to generate a force feedforward reference,
and inputs the force feedforward reference together with the speed reference to the SERVOPACK.
(1) Example of Connection with Host Controller
Connect a speed reference to V-REF (CN1-5 and -6) and a force feedforward reference to T-REF (CN1-9 and
-10) from the host controller.
SERVOPACK in Speed Control
The reference pulse input multiplication switching function is supported by software version 001A or later.
Pn109
Feedforward Gain
Classification
Setting Range
Setting Unit
Factory Setting
When Enabled
0 to 100
1%
0
Immediately
Tuning
Pn10A
Feedforward Filter Time Constant
Classification
Setting Range
Setting Unit
Factory Setting
When Enabled
0 to 6400
0.01 ms
0
Immediately
Tuning
+
+ +
-
Pn109
Pn10A
Position
reference pulse
Feedback pulse
Position loop gain (Kp)
Feedforward Gain
Differential
Feedforward Filter
Time Constant
Analog
Position
Position
COIN
SERVOPACK (in speed control)
M
Divider
Pn200.0
Pn218
Pn20E
Pn210
Pn400
T-REF
V-REF
K
FF
K
P
Pn300
Pn415
Pn281
Pn216
Pn217
Pn002.0
ENC
Kp
KFF : Feedforward gain
: Position loop gain
Pn000.1
Pn000.1
Speed reference input gain
T-REF filter time constant
Position
reference
Differe-
ntial
Host controller
Servomotor
Force reference input gain
Refer-
ence
pulse
form
Elec-
tronic
gear
Smooth-
ing
Position
feedback
Error
counter
Pn522
Positioning
completed width
Speed
conver-
sion
Speed
control
section
Current
control
section
Power
amplifier
Current feedback
Speed feedback
Position control
section
Encoder
output
pulse
B
A
*
Reference
Pulse
Multiplier
×
n
47
Summary of Contents for SGDV SERVOPACK
Page 23: ...www dadehpardazan ir 88594014 15 xxii ...
Page 53: ...www dadehpardazan ir 88594014 15 2 Panel Operator 2 10 ...
Page 203: ...www dadehpardazan ir 88594014 15 5 Operation 5 11 5 Precautions for Safety Functions 5 86 ...
Page 275: ...www dadehpardazan ir 88594014 15 6 Adjustments 6 9 7 Position Integral 6 72 ...