Mitsubishi Electric MELSEC-L LD75P User Manual page 729

Positioning module

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(2) Connection example of LD75D and MR-J3-A (Differential driver)

Near-point dog

External command

Manual pulse generator

The logic for each I/O terminal can be changed with "[Pr.22] Input signal logic selection" and "[Pr.23] Output signal logic

selection" in detailed parameters 1. (Negative logic is used for all terminals in the example above.)

The LD75D upper limit (FLS) and lower limit (RLS) are used in the OPR retry function. Set these signals inside the

servo amplifier limit switches.

These are limit switches for the servo (for stop).

This indicates the distance between the LD75D and servo amplifier.

Use the same logic (positive logic/negative logic) for the LD75D and servo amplifier. The LD75D is initially set to

negative logic.

It is recommended to make differential driver connection since differential driver connection is more excellent than open

collector connection in max. output pulse and max. connection distance between servos. ( Page 49, Section 3.1)

Configure a sequence to turn OFF the MC at alarms

and emergency stops.

Power supply

Single-phase 200VAC

External emergency stop

Forward run stroke end

Reverse run stroke end

Electromagnetic brake interlock

Positioning complete

Cutoff when a servo ON

signal turns OFF and an

alarm signal turns ON.

When connecting an open collector,

make connection as shown below.

PULSE COM 16

PULSE COM 18

Electromagnetic

Personal computer

Troubleshooting

Melsec-l ld75d