Selecting Torque Limits; Internal Torque Limits - YASKAWA SGD7S series Product Manual

6.11

Selecting Torque Limits

You can limit the torque that is output by the Servomotor.
There are four different ways to limit the torque. These are described in the following table.
Limit Method

Internal Torque Limits

External Torque Limits
Limiting Torque with an
Analog Reference
Limiting Torque with an
External Torque Limit and
an Analog Reference
Note: If you set a value that exceeds the maximum torque of the Servomotor, the torque will be limited to the maxi-
mum torque of the Servomotor.
6.11.1

Internal Torque Limits

If you use internal torque limits, the maximum output torque will always be limited to the speci-
fied forward torque limit (Pn402) and reverse torque limit (Pn403).
• Rotary Servomotors
Forward Torque Limit
Pn402 Setting Range
Reverse Torque Limit
Pn403 Setting Range
*
Set a percentage of the rated motor torque.
Note: If the setting of Pn402 or Pn403 is too low, the torque may be insufficient for acceleration or deceleration of
the Servomotor.
(Output to the maximum torque i po ible.)
The torque is always limited with the setting
of a parameter.
The torque is limited with an input signal
from the host computer.
An analog reference is used to set the
required torque limits.
The torque is limited by combining torque
limits for an external input signal and torque
limits for an analog reference.
Setting Unit
0 to 800 1%*
Setting Unit
0 to 800 1%*
Without Internal Torque Limit
Maximum torque
peed
Outline
position control, or
Default Setting
800
Default Setting
800
With Internal Torque Limit
Torque limit
Pn402
t
Pn40

6.11 Selecting Torque Limits

6.11.1 Internal Torque Limits
Control Method Reference
6.11.1
Speed control,
torque control
6.11.2
Speed control or
6.11.3
position control
Speed control or
6.11.4
position control
Speed Position Torque
When Enabled Classification
Immediately Setup
Speed Position Torque
When Enabled Classification
Immediately Setup
peed
t
6
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