Inovance MD800 Series - Synchronous Motor PMVVC; Wobble Control Function

Function Applications
-494-
4.4.12 Synchronous Motor PMVVC
Para. No. Name
Value Range
Default
Description
F0-01
Motor 1 control mode
0: SVC
2: V/f control
5: PMVVC control (for
synchronous motors
only)
0
-
F1-24
Number of motor pole
pairs
0 to 65535 2
-
F3-01
Torque boost
0.0%: Automatic torque
boost
0.1% to 30.0%
Model
dependent
The torque boost function
generally applies to the AC drive at
low frequency. The output torque
of the AC drive in V/f control mode
is proportional to the frequency.
Under the condition of low
frequency, the torque is very low
when the motor is running at a low
speed. In this case, you can set this
parameter to increase the output
voltage of the AC drive, thereby
increasing the current and output
torque.
Do not set this parameter to a
large value, otherwise, overload
protection may be triggered.
A9-40
Low-speed closed-loop
current selection (for
VVC)
0: Disabled
1: Enabled
0
-
A9-41
Low-speed closed-loop
current (for VVC)
30% to 200% (rated
motor current as the
base value)
50%
-
A9-42
Oscillation suppression
damping coefficient (for
VVC)
0 to 500 100%
-
A9-43
Initial position
compensation angle
(for VVC)
0 to 5 0
-
4.4.13 Wobble Control Function
With the wobble control function, the output frequency of the AC drive wobbles up and down around
the frequency reference (F0-07). This function is applicable to industries such as textile and chemical
fiber and winding and unwinding applications.