Command Pulse Train Monitoring Function [A]; Setting A Command Frequency Error Threshold; Setting Pen (Command Input Permission Signal) - Mitsubishi Electric MELSERVO-J5 Series User Manual

3.21

Command pulse train monitoring function [A]

Available on servo amplifiers with firmware version A5 or later.
It is recommended to use this function for safety aspect.
Use this function so that a command pulse train will not be input incorrectly due to such a factor as noise, which results in
unexpected operation.

Setting a command frequency error threshold

Set [Pr. PC90 Command frequency error threshold].
If the frequency of a command pulse train input is detected to be larger than the setting value, [AL. 035 Command frequency
error] occurs.

Setting PEN (Command input permission signal)

Assign PEN (Command input permission signal) to an input device.
Page 117 Assigning I/O devices
A command pulse train input is not accepted while PEN is turned off.
A command pulse train input is accepted by turning on PEN.
If PEN has not been assigned to the input device, a command pulse train input is always accepted.
If PENS (Command pulse train input permitted) has been assigned to an output device, PENS is turned on when a command
pulse train input can be acceptable.
There is a delay from the time PEN is turned on until PENS is turned on, or from the time PEN is turned off until PENS is
turned off.
The following shows a timing chart of command pulse train input acceptance.
Command pulse train input not permitted
PEN
PENS
RD
3 BASIC FUNCTION
152
3.21 Command pulse train monitoring function [A]
Command pulse train input permitted
Less than
100 ms
Command pulse train input not permitted
Less than
100 ms