Start here for access to our Knowledge Base to get answers to over one hundred thousand questions online in seconds.Find Answers
...See what we've been doing in some of our major markets.Find your Location
Access tailored services, 24/7 self-service and expert help. Anywhere, anytime, any project.Discover now
Everything you need to know about our IoT technology backbone.Learn more
Explore our global offerings or select your country from one of our five regions.Global
Découvrez nos offres globales ou sélectionnez votre pays dans l’une de nos cinq régions.
How do you perform a diode static check on the Flex58 drives?
Flex58 or ATV58
Checking diodes to see if they are shorted.
Before starting make sure you turn off ALL POWER on the drive. Wait 15 mins so that the DC bus has time to discharge below 24vdc on PA+ and PC-.
Using a multi-meter with a diode checker , measure between the DC Bus terminals PA/+ to L1-L2-L3 , then reverse the meter leads and read again between PA/+ to L1-L2-L3. In one direction you should read 0.30 to 0.60 and in the reverse direction you should read OL. Repeat this measurement with the blue wire (PC/-) on the J18 connector or on the (PC-) terminal. If "shorted circuit" is read in any of the readings, I recommend repair or replace the drive.