Mitsubishi Electric MELSEC-QD75MH1 User Manual page 717

15 TROUBLESHOOTING
Classification Error
of errors code
Flash ROM exceed
805
writing error
I/F
errors
Dedicated instruction
806
I/F error
Outside unit setting
900
range
Outside pulse
901 number per rotation
range
Outside movement
902 amount per rotation
range
Outside unit
903
magnification range
Outside bias speed
906
range
Parameter
setting range
errors
Outside speed limit
910
value range
Outside acceleration
911
time 0 range
Outside deceleration
912
time 0 range
Error name
Data is written to the flash ROM
continuously 25 times or more from
the PLC program.
Mismatching occurs between the
PLC CPU and QD75MH.
The set range of the basic parameter
1 "Unit setting" is outside the setting
range.
The set range of the basic parameter
1 "No. of pulses per rotation" is
outside the setting range.
The set range of the basic parameter
1 "Movement amount per rotation" is
outside the setting range.
The set range of the basic parameter
1 "Unit magnification" is outside the
setting range.
• The set range of the basic
parameter 1 "Bias speed at start" is
outside the setting range.
• The bias speed exceeds the speed
limit.
• The set range of the basic
parameter 2 "Speed limit value" is
outside the setting range.
• The value obtained by the
conversion of the speed limit value
with respect to the frequency
exceeds the maximum output
frequency of the unit.
• The speed limit value is smaller
than the OPR speed.
The set range of the basic parameter
2 "Acceleration time 0" is outside the
setting range.
The set range of the basic parameter
2 "Deceleration time 0" is outside the
setting range.
Error
At start: The system will not operate.
At start: The system will not operate.
The QD75 READY signal (X0) is not
turned ON.
When the power is turned ON or PLC
READY signal (Y0) is turned from
OFF to ON:
At start: The system will not operate.
15 - 24
MELSEC-Q
Operation status at error occurrence
QD75 READY signal (X0) is
not turned ON.