Troubleshooting
Operating Instructions 650-10 - 03.0 - 08/2016 141
2102 Error X-axis stepper motor:
• Stepper motor not moving 
fr
eely or blocked
• Encoder cable not connec-
ted or defective
• Stepper motor cable not  
connected or defective
• Encoder defective
• Stepper motor defective
• Remove the cause of the 
stif
f movement or blockage
• Check the encoder cable 
and rep
lace, if necessary
• Replace the encoder
If the stepper motor is not 
supplied w
ith current:
• Check the stepper motor 
cable and 
replace, 
if necessary 
• Replace the stepper motor
2103 Error X-axis stepper motor step 
l
osses:
• Stiff mechanical movement 
or
 blockage
• Remove the cause of the 
sti
ff mechanical movement 
or blockage
2121 Error X-axis stepper motor:
• Encoder plug (Sub-D, 
9-pin) not connected or 
def
ective
• Encoder defective
• Check the connection of 
the encoder cable and 
replace
, if necessary
2122 Information Magnet wheel search 
time
out 
• Check connection cables
• Check stepper motor for 
sti
ff movement
2130 Error X-axis stepper motor not res-
ponding
• Perform a software update
• Replace the control
2152 Error X-axis stepper motor over-
current
• Replace the stepper motor
2153 Error Excess voltage • Check the mains voltage
2155 Error X-axis stepper motor 
overload (I²T):
• Stepper motor not moving 
fr
eely or blocked
• Stepper motor defective
• Controller defective
• Remove the blockage or 
the cause 
of the stiff 
movement 
• Replace the stepper motor
• Replace the control
2156 Error X-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 control
Code Type Possible causes Remedial action