Mitsubishi QD75P1N - Page 527

12 - 29
MELSEC-Q
12 CONTROL SUB FUNCTIONS
POINT
The QD75 monitors the creep speed reach during the OPR control and updates the
"
Md.35
Torque limit stored value" to the "
Pr.54
OPR torque limit value".
Monitoring this value prevents the need to monitor the creep speed reach by the
program. If all controls of torque limit value are carried out by the program (1)
Reading data by the FROM instruction, this function must not be used.
[2] 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
Machine OPR control
Pr.17
Torque limit setting value
After the "
Pr.47
Creep
speed" is reached, this value
becomes the "
Pr.54
OPR
torque limit value".
OPR
control
Fast OPR control
1-axis linear control
2- to 4-axis linear
interpolation control
1-axis fixed-feed control
2- to 4-axis fixed-feed
control (interpolation)
Position
control
2-axis circular interpolation
control
1- to 4-axis Speed control
Speed-position switching control
Position-speed switching control
Pr.17
Torque limit setting value
Current value changing –
Major
positioning
control
Other
control
JUMP instruction, NOP
instruction, LOOP to
LEND
–
Setting value is invalid.
JOG operation, Inching operation
Pr.17
Torque limit setting value
Manual
control
Manual pulse generator operation
Pr.17
Torque limit setting value
: Set when required
– : Setting not required (Setting value is invalid. Use the initial values or setting values
within a range where no error occurs.)
: Shows the torque limit value when "
Cd.22
New torque value" is set to "0".