13 - 24
Chapter 13 Control Sub Functions
13.4.2 Torque limit function
The "torque limit function" limits the generated torque to a value within the "torque limit
value" setting range when the torque generated in the servomotor exceeds the "torque
limit value".
The "torque limit function" protects the deceleration function, limits the power of the
operation pressing against the stopper, etc. It controls the operation so that
unnecessary force is not applied to the load and machine.
The details shown below explain about the "torque limit function".
[1] Relation between the torque limit function and various controls
[2] Control details
[3] Precautions during control
[4] Setting the torque limit function
[1] Relation between the torque limit function and various controls
The following table shows the relation of the "torque limit function" and various
controls.
Control type
Torque limit
function
Torque limit value *
OPR
control
Machine OPR control
"
Pr.17
Torque limit setting value
" or
"
Cd.101
Torque output setting
value
".
: After the "
Pr.47
Creep speed
"
is reached, this value
becomes the "
Pr.54
OPR
torque limit value
".
Fast OPR control
"
Pr.17
Torque limit setting value
" or
"
Cd.101
Torque output setting
value
".
Major
positioning
control
Position
control
1-axis linear control
2 to 4-axes linear
interpolation control
1-axis fixed-feed control
2 to 4-axes fixed-feed
control (interpolation)
2-axis circular interpolation
control
1 to 4-axes speed control
Speed-position switching control
Position-speed switching control
Other
control
Current value changing
–
Setting value is invalid.
JUMP instruction, NOP
instruction, LOOP to LEND
–
Manual
control
JOG operation, Inching operation
"
Pr.17
Torque limit setting value
" or
"
Cd.101
Torque output setting
value
".
Manual pulse generator operation
Expansion
control
Speed-torque control
Torque limit value before
switching control mode is
continued.
: Set when required (Set to " – " when not used.)
– : Setting not required (Use the initial value or a value within the setting range.)
: Shows the torque limit value when "
Cd.22
New torque value/forward new torque value
"
or "
Cd.113
New reverse torque value
" is set to "0".
Summary of Contents for MELSEC-L Series
Page 2: ......
Page 30: ...MEMO ...
Page 70: ...2 10 Chapter 2 System Configuration MEMO ...
Page 83: ...3 13 Chapter 3 Specifications and Functions MEMO ...
Page 103: ...3 33 Chapter 3 Specifications and Functions MEMO ...
Page 107: ...3 37 Chapter 3 Specifications and Functions MEMO ...
Page 111: ...3 41 Chapter 3 Specifications and Functions MEMO ...
Page 115: ...3 45 Chapter 3 Specifications and Functions MEMO ...
Page 140: ...4 22 Chapter 4 Installation Wiring and Maintenance of the Product MEMO ...
Page 253: ...5 113 Chapter 5 Data Used for Positioning Control MEMO ...
Page 342: ...5 202 Chapter 5 Data Used for Positioning Control MEMO ...
Page 438: ...7 20 Chapter 7 Memory Configuration and Data Process MEMO ...
Page 440: ...MEMO ...
Page 485: ...9 25 Chapter 9 Major Positioning Control MEMO ...
Page 594: ...9 134 Chapter 9 Major Positioning Control MEMO ...
Page 624: ...10 30 Chapter 10 High Level Positioning Control MEMO ...
Page 656: ...11 32 Chapter 11 Manual Control MEMO ...
Page 690: ...12 34 Chapter 12 Expansion Control MEMO ...
Page 798: ...13 108 Chapter 13 Control Sub Functions MEMO ...
Page 866: ...14 68 Chapter 14 Common Functions MEMO ...
Page 884: ...15 18 Chapter 15 Dedicated Instructions MEMO ...
Page 899: ...16 15 Chapter 16 Troubleshooting MEMO ...
Page 1036: ...Appendix 88 Appendices MEMO ...
Page 1039: ......