Altivar 71 Not Responding to Stop Command?

Priority stops on the graphic display terminal....

Even if the graphic display terminal is not the active command channel, pressing the STOP key on the graphic display terminal will trigger a freewheel stop if:

• the [Stop Key priority] (PSt) parameter has been configured as [Yes] (YES) (factory setting) in the [1.6 - COMMAND] (CtL-) menu, via the terminal.

If the graphic display terminal is the active command channel, the STOP key will trigger a stop according to the type of stop configured with the [Type of stop] (Stt) parameter, regardless of the value of the [Stop Key priority] (PSt) parameter.

The role played by the graphic display terminal is independent of the profile.

http://www.adara-bg.com/img/140113115826ATV71-Comm-param-EN.pdf

http://www.perceptiveindustries.com/manual/Telemecanique/ALTIVAR%2071%20Programming%20Manual.pdf

pst is yes ,and also through the integrated display terminal its working fine only problem with LI4 ,[some times only ],now i changed stt setting ramp to freewheel now its working good , but still i don't know why the drive didn't stop at ramp mode

correction :start/stop terminal is LI1 not LI4

Are you using a separate external logic power supply? Or the internal with PWR pin tied to +24 logic supply pin?

Is this voltage good?

Is the LI4 terminal damaged from ESD or other external surge?

Is the stop switch good? It could have damaged terminals from operator striking it with fist.

Diagram of unit below:

Try using a different input discrete, and change the programing parameter to use that discrete input.

Did someone mess with the SW1 switch logic programing, but most likely not as you probably could not start the drive.

1.using internal power supply

2.this voltage is good

3.stop switch is good and i observed that all external controls are working fine ,

also i measured voltage across terminal 13 and 14

Sorry to every body L14 is fault reset ,drive start /stop by LI1