Mitsubishi Electric QD75MH1 User Manual page 736

15 TROUBLESHOOTING
Related buffer memory address
Axis 1 Axis 2 Axis 3 Axis 4
— — —
Auto tuning
30108 30308 30508 30708
Auto tuning response
30109 30309 30509 30709
— — —
Input signal logic selection
31 181 331
— — —
— — —
Input signal logic selection
31 181 331
— — —
Auto tuning
30108 30308 30508 30708
Auto tuning response
30109 30309 30509 30709
— — —
— — —
: The error check timing is shown below.
• When servo amplifier is power ON.
• When the QD75MH detects the rising edge (OFF
• When servo amplifier is reset.
• When the QD75MH is power ON.
Error Error
check process-
timing ing
—
—
481
—
When the servomotor shaft is
rotated with the servo off, the
cumulative feedback pulses
Imme-
should vary in proportion to the
—
Always
date stop
rotary angle. If the indication
skips or returns midway the
encoder if faulty.
481
—
—
When the servomotor shaft is
rotated with the servo off,
the cumulative feedback pulses
should vary in proportion to the
—
rotary angle. If the indication
skips or returns midway the
encoder if faulty.
ON) of the PLC READY signal [Y0].
Check point
15 - 47
MELSEC-Q
Corrective action
• Reduce load.
• Review operation pattern.
• Use servomotor that provides
larger output.
• Repeat acceleration/deceleration to
execute " Pr.108 Auto tuning".
• Change " Pr.109 Servo response"
setting.
• Set " Pr.108 Auto tuning" to OFF
and make gain adjustment
manually.
• Review operation pattern.
• Install limit switches.
Connect correctly.
Change servomotor.
• Review operation pattern.
• Install limit switches.
Connect correctly.
• Repeat acceleration/deceleration to
execute " Pr.108 Auto tuning".
• Change " Pr.109 Servo response"
setting.
• Set " Pr.108 Auto tuning" to OFF
and make gain adjustment
manually.
Change the servomotor.