Hardware Stroke Limit Function - Mitsubishi Electric QD75MH1 User Manual

12 CONTROL SUB FUNCTIONS

12.4.4 Hardware stroke limit function

When the hardware stroke limit is required to be wired, ensure to wire it in the negative logic using b-contact.
If it is set in positive logic using a-contact, a serious accident may occur.
In the "hardware stroke limit function", limit switches are set at the upper/lower limit of
the physical moveable range, and the control is stopped (by deceleration stop) by the
input of a signal from the limit switch. Damage to the machine can be prevented by
stopping the control before the upper/lower limit of the physical moveable range is
reached.
The hardware stroke limit is able to use "external input connector" of the QD75MH or
servo amplifier. (Refer to the "
The details shown below explain about the "hardware stroke limit function".
[1] Control details
[2] Wiring the hardware stroke limit
[3] Precautions during control
[4] When the hardware stroke limit is not used
[1] Control details
The following drawing shows the operation of the hardware stroke limit function.
DANGER
!
Pr.80 External signal selection".)
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