Mitsubishi QD75M1, User Manual

Page: 654 / 882

15 - 7
MELSEC-Q
15 TROUBLESHOOTING
Related buffer memory
address
Axis 1 Axis 2 Axis 3 Axis 4
Set range
(Setting with sequence program)
Remedy
— — — — — —
— — — — —
• Check that there is no influence from noise.
• Check hardware for possibility of fault.
— — — — —
• Review the sequence program which turns ON/OFF
PLC READY signal (Y0).
• Cancel the error with an axis error reset.
(Refer to section 15.1[3])
— — — — —
Check the servo amplifier power, wiring with the servo
amplifier, and connection of connectors, and cancel the
error with an axis error reset. (Refer to section 15.1[3])
— — — — —
• Check that there is no error on the personal computer
side I/F to which a cable is connected.
• Change the transmission speed (serial communica-
tion baud rate selection) between the personal com-
puter and the QD75. (Refer to section 5.2.9 "
Pr.133
")
— — — — —
Moving the system to a position where an upper limit
signal is not input using the manual control operation
(refer to chapter 11) after the axis error reset (Refer to
section 15.1[3]).
— — — — —
Moving the system to a position where a lower limit
signal is not input using the manual control operation
(refer to chapter 11) after the axis error reset (Refer to
section 15.1[3]).
— — — — —
Check whether the stop commands (output
signals/external inputs to QD75) are turned ON or
OFF. Turn OFF the ON commands.
• Output signals to QD75
Axis 1: Y4, Axis 2: Y5, Axis 3: Y6, Axis 4: Y7
• External input
Connectors for external device connection:
Stop signals (STOP)
After confirming the stop command status, cancel the
error with an axis error reset. Then turn ON a start
signal. (Refer to section 15.1[3])
— — — — —
The PLC READY signal (Y0) is turned from OFF to ON
when all BUSY signal is turned OFF.
— — — — —
Do not request the start when the axis operation state
is other than "standby", "stop", and "step standby".