Do I need to enable something in MAX to turn on Iso Power for the outputs of a UMI?

[mboos]

Hello

I've been trying to set up a UMI-7772 to control some servo drives. I have V, C, Viso and Ciso inputs connected to a 24V power supply. When turned on, both the V and Viso lights turn on green. However, I cannot measure any voltage difference between the Iso Power and Iso Common pins on the Dsub outputs. Is there something in MAX I need to enable to get the UMI to turn on?

Thanks

Mike 

[Jochen]

Hi Mike,

there is no switching circuitry on the UMI, that could disable the Iso Power outputs and there is nothing you need to configure in MAX. If you can't measure a voltage between Iso Power and Iso Common pins on the Dsub outputs, the UMI might be defective (e. g. blown fuse). Please contact your local NI branch for repair options.

Thanks and kind regards,

Jochen