Driver Unit Capacity Abnormal

Overview

Applicable Errors: 

84404421 - J1 Driver Unit Capacity Abnormal 

84404422 - J2 Driver Unit Capacity Abnormal 

84404423 - J3 Driver Unit Capacity Abnormal 

84404424 - J4 Driver Unit Capacity Abnormal 

84404425 - J5 Driver Unit Capacity Abnormal 

84404426 - J6 Driver Unit Capacity Abnormal 

84404427 - J7 Driver Unit Capacity Abnormal 

84404428 - J8 Driver Unit Capacity Abnormal 

Error Description: 

 The installed driver unit does not match the connected robot type.

Possible Remedy:  

• Installed Driver Unit capacity does not match the software value– Install the correct driver unit for the joint generating the error.   
• Driver Unit failure – Replace Driver Unit  
• Motion Board failure

Tools and Parts Needed

 Full sized teaching pendant 

#2 Philips screwdriver 

Step by Step Guide

Step 1 Identify the current hardware setting and software setting of the controller.   From main screen navigate to arm → Shift → Maintenance → Driver Unit.    **Incorrect driver unit setting will be identified by red lettering.
Step 2 Hardware setting can also be confirmed on controller label on top cover of controller.
Step 3 If there is a mismatch, correct the issue by replacing the affected driver unit. If you are unfamiliar with replacing the driver unit, please contact support@densorobotics.com.
Step 4 If the error persists after driver unit replacement, please investigate repair of the controller by contacting support@densorobotics.com

Next Steps:

• For repair options in the Americas please contact support@densorobotics.com 
• For repair options outside of the Americas, please contact your local Denso Service Center. 

Owner's Manual Reference

• Where can I find Manuals for the robot? : DENSO Robotics KB (freshdesk.com)
• Displaying Driver Unit Information (denso-wave.com)