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Operation Manual of INVT CHS100 AC Servo Drive 6 Detailed parameter description
67
SC2). See chapter 4.5.8.3 for details.
1: External analog speed command. At this time we can control the speed of the servo
motor by applying a voltage between -10V and 10V on the analog speed input
terminals (VA). By factory default, positive value means forward and negative value
means reverse. But it can be changed by setting parameters Pc.28 – Pc. 31. In the
case of analog speed command input, the ACC/DEC time parameters (Pc.00, Pc.01,
Pc.02, Pc.03) are inactive. In order to make the speed reach the speed setting
smoothly, the speed command filter time (Pb.12) can be set to filter the speed
command.
This parameter is used to select the input manner of the speed limit in the torque mode:
0: Internal speed limit. At this time we can select the internal multi-speed limit through
the speed selection terminal (SC1 and SC2). See chapter 4.5.8.3 for details. The
magnitude of the speed limit value is the absolute value of the corresponding
parameter, the direction of it is the same as that of the torque command.
For example, if the speed limit 1 is selected through the terminals (SC1=0, SC2=0,
PA.09=100.0), then the speed limit is as shown in the figure below:
Fig 6-6 Schematic diagram of the torque limit
1: External analog speed limit. At this time we can limit the motor speed by applying a
voltage between -10V and 10V on the analog speed limit terminals (VA). The
magnitude of the speed limit value is the absolute value of the analog input, the
direction of it is the same as that of the torque command.
Please note that in the torque mode, do not allow the motor to run under the condition
of negative load.
Function
code
Name
Unit
Range
Default
Mode
PA.08
Torque command/torque
limit selection
- 0~1 0 P.S.T
Limit speed
Reference
torque