An open safety device, such as the pit or car-top stop switches, a final limit switch, or the slack chain/rope switch, will display a flashing lower case "d". The pump pressure switch on the hydraulic drive will also in the "safety device" circuit.
From what I can test everything appears to be ok, cycling open and closed with i manipulate the switches. I could be missing something obvious of course, please offer any suggestions anyone may have. Ive also heard that the software could have been currupted and thats not really something that can be fixed. Please help! Thanks
Michael
Since the board is obsolete a plc up grade was a slick solution where the drive is a seperate unit. The only issue is whether there is enough overhead space to fit the new equipment.
Also the remote run station is nice in isolating safety / door circuit issues.
On the bottom of the cab, on the rail side, is a micro-switch. This switch must be manually reset by pushing the button on the backside of the switch.
You also need to understand why it tripped.
As always, make sure you are not putting yourself in a compromising situation. There should be an e-stop on the first floor in the hoist-way. Make sure you know where that is and it is pushed in (i.e. stopped) while you are under the cab. Make sure the first floor door is open. I always put some automotive jack-stands under the rail where the cab would come down just in case.
Here is a photo:
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