ADC Scale 1 is usually set at 2.5v if the motor RPM is the actual RPM of the car. You can adjust this lower to decrease speed then adjust your PPR to attain the proper contract speed. The drive and the MSU must have the same ME Base speed which is usually the motor nameplate. The PPR adjustments must also be the same in both places.

what was the motor encoder rpm set to under MSU ADJUST. looks like you are only looking at the drive adjustments as john jay says above make sure the MSU adjustment s are correct as well

Well that didn't last very long!

Thanks john jay and Vatorgator I did double check those parameters you suggested. ADC scale is at about 2.57V and I made sure that the RPMs are the same in both MSU and drive.

The car started to run into the overhead! This is only happening on a one floor run from the floor below. If we ran it from multiple floors below the top or bottom to top it would come in fine . It would not run into the pit or thru the bottom landing. It's not overshooting any of the other floors in either direction. Please correct me if I'm wrong but If we have a good floor table the MSU is calculating the slowdown distances at all the landings? with terminal interference from the limits how does the car run into the overhead on a one floor run? Could the top landing mag switch be faulty? I can see that we may or may not get both speed switches on the ETS board on a one floor run, in either direction depending on the floor height but we get both every time on a one floor run into the top landing. It seems like the car is trying to get to full speed on that one floor run. Is there a parameter for an alternate profile for a one floor run? I found ALT PL1 & 2 PROFILE but that looks like it has to do with load weighing. We do not have any load weighing device. Thoughts?

First off, 2.57 is too high. Lower ADC to2.5 volts, then check to make sure the ME Base speed is the same RPM as the Motor Nameplate, in the Drive and MSU. Then raise or lower your speed with the PPR parameters, again in MSU and the Drive. Use the motion averages screen to see when you have attained contract speed.. Also to see when the speed switches are picking. As for the going into the overhead, you may be tripping your ETS switch. Get the speeds correct then see what happens on the one floor run.

Thanks john jay. I will be back there on Tuesday and will go thru those parameters. I will let you know how it turns out.

Good morning all,
john jay you hit the nail on the head! First thing I did was lower ADC Scale to 2.50 and the car immediately responded. I moved the RPM and PPR settings in the drive and MSU to achieve the most stable speeds I could and the car has been running since Tuesday. My natural curious side wants to know what must have changed in the system that necessitated the change in that parameter that was set from the day the car was adjusted 25+ years ago? I am very thankful that the damn thing is running! Thank you all very much for your help with this!

Glad to hear it. It must be those pesky Gremlins again. It would be hard for that unit to run with the ADC at 2.57 unless all the associated parameters, ME Base speed, and the PPR's were jacked also.

Check little yellow relays on board for brake. Usually spares not being used on board.