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9 limiting torque – Yaskawa Sigma II Series SGMVH User Manual

Page 252

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8.9 Limiting Torque

8

Operation

8-71

8.9 Limiting Torque

The SERVOPACK provides the following four methods for limiting output torque to protect the machine.

8.9.1 Internal Torque Limit (Limiting Maximum Output Torque)

Maximum torque is always limited to the values set in the following parameters.

Setting

Level

Limiting Method

Reference Section

1

Internal torque limit

8.9.1

2

External torque limit

8.9.2

3

Torque limiting by analog voltage reference

8.9.3

4

External torque limit + Torque limiting by analog voltage reference

8.9.4

Pn402

Forward Torque Limit

Setting Range

Setting Unit

Factory Setting

Setting Validation

0 to 800

1%

800

Immediately

Pn403

Reverse Torque Limit

Setting Range

Setting Unit

Factory Setting

Setting Validation

0 to 800

1%

800

Immediately

The settings in these parameters are constantly enabled. The setting unit is a percentage of rated torque.
If the torque limit is set higher than the maximum torque of the servomotor, the maximum torque of the servomotor is used
(as is the case with the 800% factory setting).

No Internal Torque Limit

(Maximum Torque Can Be Output)

Internal Torque Limit

Too small a torque limit setting will result in insufficient torque during acceleration and deceleration.

Speed

Position

Torque

Speed

Position

Torque

Speed

Maximum torque

t

Speed

Limiting torque

Pn403

Pn402