Encoder System Down Failure

Modified on Fri, 11 Oct at 6:22 PM

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Overview

Applicable Errors:

85404671 - J1 encoder system down

85404672 - J2 encoder system down

85404673 - J3 encoder system down

85404674 - J4 encoder system down

85404675 - J5 encoder system down

85404676 - J6 encoder system down

85404677 - J7 encoder system down

85404678 - J8 encoder system down

Error Description:

Failed to read the encoder information of the corresponding axis.

Possible Causes:

1.Dead Batteries in the robot. Batteries inside of the robot operate at 3.6V +/- 20%. If the batteries are low the batteries in the robot arm need to be replaced, the affected encoder(s) need to be reset, cycle power on the controller,

2. A motor was changed or was unplugged from the wiring harness inside of the robot arm. To resolve this error - confirm affected joints, reset encoder(s), cycle power on the controller, and calibrate robot.

3.Temporary disconnection of the power conversion board inside of the robot.

4. A motors encoder has become damaged. Exchange the motor, reset encoder, calibrate affected joint.

Remedy:

Identify and resolve the cause of the error and then reset the encoder using the guide below.

Tools and Parts Needed

Full Sized Teaching Pendant

Step by Step Guide

Step 1 Confirm affected joint(s) by using the full sized teaching pendant.	Displaying Encoder Information (denso-wave.com)
Step 2 Identify the affected joint(s)	Joint(s) affected by this error can be identified by a red circle in the System Status column.
Step 3 Reset encoder(s) for affected joint(s)	Resetting Encoder (RC8 / RC8A) : DENSO Robotics KB (freshdesk.com)
Step 4 Cycle power on your controller.
Step 5 Calibrate all joints that were reset.	How do I perform a CALSET for the robot? : DENSO Robotics KB

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)