"Duty factor warning" versus "Joint load

Robot Controller
1

Dear All

Hi, after using ABB Robot for 4 years, it’s a first time I got
Alarm 50263 (Duty factor warning).
“The duty factor for the gearbox of joint rob1_1 of robot ROB_1 is too high.
Continued running without adjustment may cause damage to motor and gearbox.
Contact your local ABB service support center.”
Action : Reduce the speed or increase the wait time.

In almost of all the cases, I ussually get Alarm 50055 (Joint load too high).

My question :

  1. What is the differences between “Duty factor warning” and Joint
    load too high?
    I see that they have the same remedy : reducing the speed.
    Is it right that “Duty factor warning” is a special case of “Joint
    load too high”?

  2. Actually the robot’s cycle time is close to the minimum limit ( I
    must catch up the target of speed).
    Is there anyone know the solution to solve this problem beside reducing the
    speed? May be there is a parameter that I can set by software?

Thanks and regards

2

Duty Factor, is error that raises the robot when, after evaluate the last 30 minutes of produccion (moves, speed, loads, acceleration, etc), thinks that a gearbox is working outside of the specification, and they life will reduce.

You can reduce the problem, if you change the following parameter:

MOTION_SYSTEM:

-name “system_1” -min_temp_ambient_cabinet 5 -max_temp_ambient_cabinet 45
-min_temp_ambient_robot 5 -max_temp_ambient_robot 45

Change 45 to 40.

/Jorge

3

Dear Mr Jorge

Thank you very much for sharring your experience. It’s very very helpful.

Regard

4

Jorge, por qué decidiste reducir la temperatura?

5

How do you solve 50055 alarm

6

To Amine108:

Regarding Error 50055, you need to follow the instructions in the troubleshooting manual as listed below.
Description: Actual torque on joint arg too high. Might be caused by incorrect load data, too high acceleration, high external process forces, low temperature or hardware error.
Recommended actions: • Check load data. • Reduce acceleration or speed. • Check hardware.
When it comes to H/W error, Motor power cable issues are most common.