Mitsubishi QD75P1N User Manual page 670

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 value of the basic parameter 1
"Unit setting" is outside the setting
range.
The set value of the basic parameter 1
"No. of pulses per rotation" is outside
the setting range.
The set value of the basic parameter 1
"Movement amount per rotation" is
outside the setting range.
The set value of the basic parameter 1
"Unit magnification" is outside the
setting range.
The set value of the basic parameter 1
"Pulse output mode" is outside the
setting range.
The set value of the basic parameter 1
"Rotation direction setting" is outside
the setting range.
• The set value of the basic parameter 1
"Bias speed at start" is outside the
setting range.
• The bias speed exceeds the speed
limit.
• The set value 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 value of the basic parameter 2
"Acceleration time 0" is outside the
setting range.
The set value 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.
Error
15 - 32
MELSEC-Q
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:
QD75 READY signal (X0) is not
turned ON.
At start:
The system will not operate.
The QD75 READY signal (X0) is
not turned ON.