NHR 4808 DC Power Module Only Works if It Has the Termination Plug Connected to the "Parallel In" Port

Updated Jan 30, 2025

Issue Details

I am trying to work with the 4808 DC Power Module and according to the user manual a termination plug is required to connect to Parallel Out on standalone modules or to the final module operated in parallel, however, I have to connect it to Parallel In port to be able to work with the module.

Solution

This behavior is because the pins E-STOP and DISABLE (on the left side of your NHR-4808) have to be in short circuit, when you connect the termination plug in Parallel In port, you are causing the short circuit on these pins.

You must install a jumper from pin 1 to pin 2 and another jumper from pin 3 to pin 4, then, you will be able to work with the module connecting the termination plug in the Parallel Out port as is mentioned in the manual.

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