APPENDICES

MELSEC-Q

INPUT TERMINAL

This is a pin connector wired by the user for inputting data to the QD75 from an external source. It is connected to the motor drive unit or machine side.

This terminal is used to output the following.

DRIVE UNIT READY signal

START signal

STOP signal

,etc.

The input No. Xn is not directly related to the program, so it is not used.

JOG

Jog. This refers to moving the tool little by little. Inching.

Parameter setting is required to carry out JOG operation.

kPPS

This is the abbreviation for "kilopulses per second". 80kPPS equals 80,000 pulses per second.

INTERLOCK

In this condition, the machine is blocked from moving to the next operation until the operation in progress is complete. This function is used to prevent damage to devices and malfunctioning.

Y1

Y0 Forward run

Y0

Y1 Reverse run

INTERPOLATION OPERATION

The simultaneous operation of multiple motors to carry out a composite operation. Each motor can be freely set with the positioning distance,

LIMIT SWITCH

This is a switch set to stop a moving object at both ends, etc., of a movement device for safety reasons.

A circuit is created in which the moving body itself presses against the switch to activate the contact and forcibly shut the power OFF. For example, pressing on the actuator in the drawing below activates the internal microswitch. There are various other types.

 

Actuator

Push plunger

 

Rubber cap

 

Lead

Case

acceleration/deceleration time, speed, and other factors, which are combined to move a target in a straight line, circle, etc. Linear interpolation and circular interpolation are available. (The circular interpolation uses two motors.)

NC NO COM

Microswitch

INVERTER

This refers to a device to change a direct current (DC) to an alternating current (AC). The device actually changes the motor speed by changing 50Hz or 60Hz of commercial frequency to direct current once, then changing it again to a 5 to 120Hz alternating current and controlling the motor speed.

Appendix - 79

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Mitsubishi Electronics QD75D Kpps, Y0 Forward run Y1 Reverse run, Actuator, Push plunger Rubber cap Lead Case, Microswitch