Accumulated Pulse Error Detection Function - Mitsubishi Electric MELSEC Q Series User Manual

11.9

Accumulated Pulse Error Detection Function

The accumulated pulse error detection function outputs an alert and immediately stops the positioning when the
accumulated pulses reached the amount specified by the user before the pulses exceed the amount set in
"Accumulated pulse setting" in the switch setting and an excessive error occurs.
This function enables to detect abnormal operating status in early stages and minimize the influence on the
mechanical system.
(1) Control details
The following figures show the operation of the accumulated pulse error detection function.
Immediate stop accumulated
pulses (maximum value)
Alert output accumulated
pulses (maximum value)
Reference value
(maximum value)
Cd.18 Accumulated pulse
error detection request
Start signal (Y20 to Y26)
BUSY signal (X14)
Excessive error signal (X17)
Error detection signal (X18)
Servo ON signal (SVON)
Error code (ERR.1)
Md.3
Md.21 Deviation counter value
(pulse)
Accumulated
An alert occurs because the
pulse accumulated pulses have
exceeded the amount of Alert
output accumulated pulses
(maximum value).
ON
OFF
ON
OFF
ON
OFF
OFF
OFF
ON
0
Inconsistent
CHAPTER 11 CONTROL SUB FUNCTIONS
Positioning stops immediately because
the accumulated pulses have exceeded
the amount of Immediate stop
accumulated pulses (maximum value).
(Accumulated pulse clear)
The accumulated pulses increase
because the workpiece hit something
and stopped.
ON
ON
OFF
130
0
Executed by the QD73A1
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