Hi, we have a few robots but I find that one of our ABB IRB 6400R always seems to get a battery low voltage error anytime the power cuts out which would indicate that the backup battery pack is low. Has anyone encountered a similar problem and know why this might happen? I thought that these batteries are meant to last a few years. The batteries must be draining somehow but I'm not sure how.
ABB IRB 6400R Backup Battery issues
- David.mms
- Thread is Unresolved
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The IRB6400R robot was used with 3 controller models: S4C (M99), S4C+ (M2000) and IRC5 (M2004).
All 3 have different battery configurations. Which controller is this one?
Could you supply the actual error number?
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The controller is an S4C. See below the error that comes up on the teach pendant.
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With the power on, disconnect one battery at a time and measure its voltage. Both of the lithium 'D' cells need to measure over 3.6VDC. Always check battery voltage on new batteries before installing - they should measure 3.70 to 3.73 volts.
Battery life depends on many things. The amount of time the controller is off is the obvious one but some other possibilities are:
- Improper storage of the battery before it was installed. Battery shelf life decreases with temperature.
- Old battery that was sitting in the back of a inventory bin for the last 12 years before being found and used.
- Damaged from being dropped may diminish a battery's capacity.
- Manufacturing defect. Murphy has laws regarding this.
- Cheap aftermarket battery. Some of them are cheap because they use questionable batteries. The vendor we purchase from uses the same Saft batteries and protection ABB uses.
- Bad component on one of the computer unit circuit boards or backplane causing increased current draw when the controller is off that depletes the batteries sooner.
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