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Sigma II User's Manual
5.1.3
Limiting Torques
The SGDH servo amplifier limits torques as follows:
•
Level 1: Limits maximum output torque to protect the equipment or workpiece.
•
Level 2: Limits torque after the servomotor moves the equipment to a specified
•
Level 3: Always limits output torque rather than speed.
•
Level 4: Switches between speed and torque limit.
Application of levels 1 and 2 in the torque limit function are described below.
n
Setting Level 1: Internal Torque Limits
Maximum torque is limited to the values set in the following parameters.
Parameter
Pn402
Forward Torque Limit
Pn403
Reverse Torque Limit
Sets the maximum torque limits for forward and reverse rotation.
Used when torque must be limited due to equipment conditions.
The torque limit function always monitors torque and outputs the signals
below when the limit is reached.
The following signals are output by the torque limit function.
Signal
/CLT
Monitor Mode (Un006)
The torque limits are specified as a percentage of the rated torque.
Note: If torque limit is set higher than the maximum torque of the servomotor, the maximum torque of the
servomotor is the limit.
position (internal torque limit).
Signal
Range: 0 to 800
Default Setting: 800
Range: 0 to 800
Default Setting: 800
Generated when Pn50F.0 allocates an output terminal from SO1 to SO3.
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5-9
Chapter 5: Parameter Settings and Functions
Setting
Control Mode
(%)
Speed/Torque Control,
Position Control
Speed/Torque Control,
Position Control
Description
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