Functions Of Qd74Mh - Mitsubishi Electric MELSEC Q Series User Manual

5 SPECIFICATIONS AND FUNCTIONS

5.2.2 Functions of QD74MH

Functions
• Proximity dog type
• Data set type
• Stopper type
• Dog cradle type
• Limit switch combined type
• Scale origin signal detection type
Linear control
• 1-axis linear control
• 2-axis linear interpolation
control
• 3-axis linear interpolation
control
• 4-axis linear interpolation
control
JOG operation
Incremental feed operation
Servo ON/OFF
Electronic gear function
Hardware stroke limit function
Software stroke limit function
Backlash compensation function
Speed limit function
Acceleration/deceleration control
Stop control
Sudden stop control
Forced stop control
Command in-position function
Pausing function
Torque limit function
Speed change function
Acceleration/deceleration time
change function
Functions of QD74MH are shown below.
This function mechanically establishes the positioning start point using a
proximity dog, stopper or limit switch.
This function executes the positioning to a target position in a linear path by the
address or movement amount set in the positioning data.
This function executes the positioning at the specified speed while the JOG start
signal is ON.
This function executes the positioning corresponding to minute movement
amount by manual operation.
This function executes the all axes servo ON/OFF or each axis servo ON/OFF.
This function changes the machine movement amount per commanded pulse by
setting of the movement amount per pulse.
This function executes a deceleration stop with the limit switch input via servo
amplifier.
If a command outside of the upper/lower limit stroke limit setting range set in the
parameters is issued, this function will not execute positioning for that command.
This function compensates the mechanical backlash amount. Feed pulses
equivalent to the set backlash amount are output each time the movement
direction change.
If the command speed exceeds "
function limits the commanded speed within the setting range of "
limit value".
This function adjusts the acceleration/deceleration for the control.
This function executes a deceleration stop with the stop command.
This function executes a sudden stop with the sudden stop command.
This function stops the all axes of servo amplifier by input from DC24V connected
to the forced stop input connector of QD74MH or input from PLC CPU.
This function calculates the remaining distance to reach the positioning stop
position at the automatic deceleration, if the value is less than the set value, the
"Command in-position (
This function pauses a positioning or continues a positioning from the interruption
position.
If the torque generated by the servomotor exceeds the torque limit value during
control, this function limits the torque generated within the setting range of torque
limit value
This function changes the speed during positioning operation.
This function changes the acceleration/deceleration time at the speed change.
Details
Speed limit value" during control, this
Pr.10
Status 2: b1)" signal turns ON.
Md.10
5 - 5
MELSEC-Q
Reference
section
Chapter 7
Chapter 8
9.1
9.2
10.1
10.2
10.3
10.4
10.5
Speed
10.6
Pr.10
10.7
10.8
10.9
10.10
10.11
10.12
10.13
10.14
10.15