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3-26
Programming and Parameters
SPEED COMMAND
Pr
oc
ess PI
Important: Parameters in the Process PI Group are used to enable and tune the
PI Loop. To allow the PI Loop to control drive operation, parameter 080 must be
set to 2 “Process PI”.
124 [PI Configuration]
Sets configuration of the PI regulator.
thru
Option Descriptions
Excl Mode
Enabled: Selects speed regulation (PI output used as speed
command).
Disabled: Selects trim regulation (PI output summed with speed
command).
Invert Error
Enables/disables the option to invert the sign of the PI error
signal. Enabling creates a decrease in output for an increasing
error and an increase in output for a decreasing error.
Preload Mode
Enabled: Initializes the PI integrator to the commanded speed
while the PI is disabled.
Disabled: The PI integrator is loaded with the PI Pre-load (133)
while PI is disabled.
Ramp Ref
Enables/disables ramping the PI reference using PI Feedback
as the starting point and ramping to the selected PI Reference
after PI is enabled. The active accel time is used for the PI ramp
reference slew rate. The ramping is bypassed when the
reference equals the setpoint. The ramp used is set by the
active ramps (parameters 140 to 143).
Zero Clamp
Enables/disables option to limit operation so that the output
frequency at the PI regulator always has the same sign as the
master speed reference. This limits the possible drive action to
one direction only. Output from the drive will be from zero to
maximum frequency forward or zero to maximum frequency
reverse.
Feedback Sqrt
Enables/disables the option of using the square root of the
feedback signal as the PI feedback.
Stop Mode
Enabled: PI loop continues to operate during the decel ramp
after a stop command is issued. (Frame 2, 3, 4, 5, & 6)
Disabled: Drive performs a normal stop.
Anti Wind Up
Enabled: The PI loop automatically prevents the integrator from
creating an excessive error that could cause instability. The
integrator will be controlled without the need for PI Reset or PI
Hold inputs. (Frame 2, 3, 4, 5, & 6)
F
ile
Gr
oup
No
.
Parameter Name and Description
See
page 3-2
for symbol descriptions
Values
Re
lated
0
0
0
0
0
0
0
0
x
x
x
x
x
x
x
x
10
0
1
2
3
4
5
6
7
8
9
11
12
13
14
15
1
=Enabled
0
=Disabled
x =
R
eserved
Bit #
Factory Default Bit Values
Excl
M
ode
In
ve
rt Error
Preload
M
ode
R
amp
R
ef
Zero Clamp
Feedbak
S
qr
t
S
top
M
ode
A
nti-
W
ind Up
N
ibble 1
N
ibble 2
N
ibble 3
N
ibble 4
Содержание 9VT201-007HTNNN
Страница 1: ...VTAC 9 AC Drive Firmware Version 3 xx User Manual ...
Страница 4: ...soc 2 ...
Страница 14: ...P 8 Overview Publication 9VT UM001D EN P Notes ...
Страница 56: ...1 42 Installation Wiring Publication 9VT UM001D EN P Notes ...
Страница 62: ...2 6 Start Up Publication 9VT UM001D EN P Notes ...
Страница 130: ...3 68 Programming and Parameters Publication 9VT UM001D EN P Notes ...
Страница 150: ...4 20 Troubleshooting Publication 9VT UM001D EN P Notes ...
Страница 176: ...A 26 Supplemental Drive Information Publication 9VT UM001D EN P Notes ...
Страница 196: ...B 20 Using the LCD OIM Publication 9VT UM001D EN P Notes ...
Страница 212: ...C 16 Application Notes Publication 9VT UM001D EN P Notes ...
Страница 223: ......