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Why is my Altivar Process Drive display screen blank?

Issue:
Why is my Altivar Process Drive display screen blank?

Product Line:
Altivar Drive AC Drive ATV630 ATV930

Environment:
All

Cause:
Electrical Continuity

Resolution:
If remotely mounted, try connecting to the face of the drive.  If that doesn't resolve it, check +10v dc and +24v dc terminals to COM. If customer using Communications for Monitoring or Control, ensure that no one connected the Ehternet Cable to a Modbus/HMI Port.  If not an Ethernet issue, and the +10v, +24v are not present, check PA to PC on the bottom of the drive near line and load terminals.  You should read the {Line Voltage x 1.414} around 650v dc if 460v system, or 340v dc if 230v system.  If you have no measurable voltage on PA to PC, check your Line Terminals to ground On The Drive.
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