Hyster B60ZHD. All systems, all wires, all motors, all contactors. no battery bleed to frame, everything checks good. Yet the unit will wipe out truck perimeter programing of controller, and requires reflash of controller perimeters. 3rd controller from flight systems, see if it holds out. Wondering if anyone has had this same problem. Thanks guys, and sorry about my spelling.
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gsparks
actually the tires are what causes the static buildup (especially non-marking tires)
the static strap is the nylon strap that hangs down from the frame touching the floor.
if the nylon strap does not stay on the machine you can try hanging a small chain off the counterweight or somewhere you can attach it to the frame and have it drag on the floor.
Just don't make it too long, you don't want it to get caught on anything like a dock plate and get pulled off.
it only needs to 'just touch' the floor so it can discharge static from the machine.
No static strap other than the big one. (drive tire,unless all poly,straps don't stay on long) Will try if it comes back, thanks to all. Great input.
This sounds like a classic static discharge issue. Make sure you have a static strap on the truck.
static can certainly be an issue
i would definitely check and see if the truck has a static strap on it and that it is contacting the floor.
One other possibility is if the operator is plugging the battery charger into the truck instead of the battery accidentally.
Although most chargers and trucks these days have a failsafe built into their systems to help prevent the charger from starting unless a battery is plugged into it i have seen this happen where the truck may hold a residual charge enough to cause the charger to start when plugged into the truck and that initial burst from the charger when it does start wipe out a controller or logic card or display unit.
in my experience the latter does not happen on that wide of a scale though so the static strap scenario would be my first guess.
As for the battery backup theory i usually find battery backup cells in the display unit... generally. Never have found one inside a controller, but then usually i'm not taking a controller apart when one fails.... generally ;o)
?Non marking tires?
Is it used to move totes carrying liquids or fiber [like rugs]? (static build up). wood floors?
Some curtis controllers have a battery backup in the truck control (as a separate box from the traction controller).
No battery back up, not like Toyota dash displays or Raymond. Awesome input, thanks. Keep on thinking. I will have to let this go to the dealer if it fails again. I hate loosing. Even if it goes to the dealer, I want to know why it dose what it did. Old school I guess. Thanks, Forkingabout, see we think the same, but no battery. (Or so they tell me) LOL.
Is there a battery back up inside the controller?
Ive seen this problem before on other brands of forklift when the controller back up battery fails.
As soon as forklift had the battery unplugged, all settings went out the window.
Its basically like the little RTC / Bios battery in a PC or laptop.
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