Operation Manual
Troubleshooting
Operating Instructions 610-10/630-10 - 00.0 - 01/2016 127
2402 Error U-axis stepper motor:
• Stepper motor not moving
fr
eely or blocked
• Encoder cable not connected
or
defective
• Stepper motor cable not
connected or defective
• Encoder defective
• Stepper motor defective
• Remove the cause of the stiff
movement o
r blockage
• Check the encoder cable and
r
eplace, if necessary
• Replace the encoder
If the stepper motor is not supplied
with cu
rrent:
• Check the stepper motor cable
and
replace, if necessary
• Replace the stepper motor
2403 Error U-axis stepper motor step
lo
sses:
• Stiff mechanical movement or
blocka
ge
• Remove the cause of the stiff
mechanical movement or
blockage
2421 Error U-axis stepper motor:
• Encoder plug (Sub-D, 9-pin)
no
t connected or defective
• Encoder defective
• Check the connection of the
encoder
cable and replace,
if necessary
2422 Information Magnet wheel search timeout • Check connection cables
• Check stepper motor for stiff
movement
2430 Error U-axis stepper motor not
responding
• Performing a software update
• Replace the controller
2452 Error U-axis stepper motor over
c
urrent
• Replace the stepper motor
2453 Error Excess voltage • Check the mains voltage
2455 Error U-axis stepper motor overload
(I²
T):
• Stepper motor not moving
fr
eely or blocked
• Stepper motor defective
• Controller defective
• Remove the blockage or the
cause of the stif
f movement
• Replace the stepper motor
• Replace the controller
2456 Error U-axis stepper motor:
• Stepper motor not moving
fr
eely
• Stepper motor defective
• Controller defective
• Correct the cause of not moving
fr
eely
• Replace the stepper motor
• Replace the controller
2462 Error • U-axis stepper motor distur-
bance (IDMA auto increment)
• Switch the machine off and on
again
Code Type Possible causes Remedial action










