Mitsubishi MELSEC QD75P User Manual page 628

15 TROUBLESHOOTING
Classification Error
of errors code
Outside unit setting
900
range
Outside pulse
901 number per rotation
range
Outside movement
902 amount per rotation
range
Outside unit
903
magnification range
Pulse output mode
904
error
Rotation direction
905
setting error
Outside bias speed
906
range
Parameter
Outside speed limit
910
value range
Outside acceleration
911
time 0 range
Outside deceleration
912
time 0 range
Backlash
920 compensation
amount error
Software stroke limit
921
upper limit
Error name
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 "Pulse output mode" is outside the
setting range.
The set range of the basic parameter
1 "Rotation direction setting" 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.
The value converted into pulse
number using the movement amount
per pulse is 256 pulses or more.
• In the unit of degree, the set value
of the detailed parameter 1
"Software stroke limit upper limit
value" is outside the setting range.
• In a unit other than degree, the
software stroke limit upper limit
value is smaller than the software
stroke limit lower limit value.
15 - 24
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Error Operation status at error occurrence
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.
The QD75 READY signal (X0) is not
turned ON.
MELSEC-Q
QD75 READY signal (X0) is
not turned ON.