Overcurrent (RC8)

Modified on Mon, 21 Oct at 10:00 AM

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Overview

Applicable Errors:

84404571 – J1: Motor Overcurrent

84404572 – J2: Motor Overcurrent

84404573 – J3: Motor Overcurrent

84404574 – J4: Motor Overcurrent

84404575 – J5: Motor Overcurrent

84404576 – J6: Motor Overcurrent

84404577 – J7: Motor Overcurrent

84404578 – J8: Motor Overcurrent

844044B1 – J1: Excessive current error

844044B2 – J2: Excessive current error

844044B3 – J3: Excessive current error

844044B4 – J4: Excessive current error

844044B5 – J5: Excessive current error

844044B6 – J6: Excessive current error

844044B7 – J7: Excessive current error

844044B8 – J8: Excessive current error

84404431 – J1: Driver unit Overcurrent (U-Phase)

84404432 – J2: Driver unit Overcurrent (U-Phase)

84404433 – J3: Driver unit Overcurrent (U-Phase)

84404434 – J4: Driver unit Overcurrent (U-Phase)

84404435 – J5: Driver unit Overcurrent (U-Phase)

84404436 – J6: Driver unit Overcurrent (U-Phase)

84404437 – J7: Driver unit Overcurrent (U-Phase)

84404438 – J8: Driver unit Overcurrent (U-Phase)

84404441 - J1: Driver unit Overcurrent (V-Phase)

84404442 – J2: Driver unit Overcurrent (V-Phase)

84404443 – J3: Driver unit Overcurrent (V-Phase)

84404444 – J4: Driver unit Overcurrent (V-Phase)

84404445 – J5: Driver unit Overcurrent (V-Phase)

84404446 – J6: Driver unit Overcurrent (V-Phase)

84404447 – J7: Driver unit Overcurrent (V-Phase)

84404448 – J8: Driver unit Overcurrent (V-Phase)

Error Description:

Current flow through the motor or the driver unit of the corresponding axis exceeded the permitted value.

Possible Remedy:

Reduce the robot speed, acceleration and deceleration.
Confirm the end of arm load is not in excess of parameter value & arm capacity.
Motor encoder cable broken.
Robot is not colliding with any external obstacle.
Driver Unit failure
Robot internal wiring is damaged.
Mechanical failure of drive component in specified joint
Motor failure

Tools and Parts Needed

Full Sized Teaching Pendant

#2 Phillips Screwdriver

Hex Wrench Set

Step by Step Guide

Step 1 Confirm the end of arm load is not in excess of parameter value & arm capacity.	Identify specifications of tooling (mass of payload, COG, & Moment of inertia). Confirm parameter value (arm – aux – config – parameters 1 through 7).
Step 2 Verify the motor encoder cable is not broken or damaged.	Confirm visually.
Step 3 Robot is not colliding with any external obstacle.	Confirm visually.
Step 4 Verify Driver unit operation.	Replace Driver unit of erroring joint with driver unit of same size within controller, or install new card from spare parts.
Step 5 Verify no damage to wiring harness inside of robot.	Remove arm covers and confirm visually.
Step 6 Verify there is no mechanical failure of drive component in specified joint.	Release brake of specified joint and move joint by hand. Check for seizing, inconsistent movement or rough movement.
Step 7 Motor failure	Release brake of specified joint and check for seizing or tightness when moving.

Next Steps:

For repair options in the Americas please contact [email protected]
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)

Overcurrent (RC8)

Overview

Step by Step Guide

Step 1

Step 2

Step 3

Step 4

Step 5

Step 7

Next Steps:

Owner's Manual Reference