Obtain and Review the Relay DC Drawings


Obtain and Review the Relay DC Drawings

Topic Progress:

The DC Schematic gives us insight into what this relay is supposed to do when it operates.  Watch this video to see what I look for on schematics to help me connect my test-set to the relay as well as get clues to what my test plan will look like.

Download the DC Schematic to follow along

Click “Mark Complete” below after watching the video so you can keep track of your progress.

Collapse Comments

Anyone notice another red flag on this schematic?

I do a lot of retrofit and installation commissioning. OUT102 has the wrong relay connection points (A05 and A06 instead of A03 and A04). Also the non-sequential ordering of the outputs increases the concern. Likely a copy paste error, but a wiring/setting inspection will verify the correct outputs.

Chris Werstiuk (Administrator) December 26, 2017 at 11:16 am

Good eye. That was a cut and paste error originally and I left it in as an example of a common mistake.

by the way those 86 NO contact in series with the 86 coil should be NC or you never trip the 86

Chris Werstiuk (Administrator) May 18, 2024 at 8:37 am

Good eye!

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