Elevator Forum

AC drive ok . You should have noted that but it is cool.Over current: what does your bus voltage look like?aging units typically need new bus caps .Se...

After checking the above recommendations first,you may want to make sure your brushes are free on the machine. A open armature due to sticking brushes...

Thanks that might work.

If simm is present you don't need Cadi. If it is gone then you will need Cadi. It is done by generating the appropriate telegrams.

Get a cable tester and verify your rj45 connectors are ok. I have seen those things get corroded quite a bit.

I was surprized that the culpret was the 5volt. Usually in comm circuits the +-12 is the problem.

Earlier AC drives utilized a UT, DT module on the controller. Check those if you have them

Some of the Vvvf operators were prone to the little plastic cams not breaking the optic due to people standing on the operator box and bending the ang...

Got it. Issue with the power supply. I may have been picking up ripple on the 5volt. New power supply ie problem solved.

Address 21 Is DOI flag hi? What is the status of your DOL? Maybe the car gets enough shift to work at the top

Actually fixed a Vertitron last night on call. We have a bunch usually in department stores. They seem ok.To me it is a little over the top to really ...