micrologix 1200 relay output?

Does this mean it can run 24vdc and 120vac relays depending on which of the 10 outputs are used? Whats the difference from OUT 0-9 and VAC DC 0-4?

thanks

Generally MicroLogix outputs are grouped together; there will be a group with a common source power terminal for the high-speed DC outputs, then another group with a common source power terminal for the standard DC outputs, then a couple of groups of relays.

The only way to be certain about how these are hooked up is to look at the connection diagram in the MicroLogix user manual for your specific controller.

MicroLogix termination confuses me, with the grouping and the staggered terminals. I always print out the connection diagram and keep it with me when I'm wiring a MicroLogix so I can double-check my schematic or hookup diagram against the actual controller.


The "VAC DC" label generally means it's the common source terminal for a dry relay contact.

Yes, you can run different voltages on adjacent but separate relays or relay groups.

I don't like to do it, but if I'm careful with my wiring (I almost always use ferrules if I'm mixing voltages) I will.

What is the exact hardware part number of the MicroLogix you are using ?

It is a 1762-L24BWA

Thanks

Okay, that model has only relays, and no DC solid-state outputs.

The relay "commons" are grouped together, both to fit the terminal count of the MicroLogix frame and to provide the mix of voltages or functions that most users will need.

Terminal "VAC DC0" feeds Output 0
Terminal "VAC DC1" feeds Output 1
Terminal "VAC DC2" feeds Outputs 2 and 3
Terminal "VAC DC3" feeds Outputs 4 and 5
Terminal "VAC DC4" feeds Outputs 6, 7, 8, and 9

The relays inside are identical, so the ampere capacity of all outputs are the same. The limit of 8A per output Group applies, as well as the ampere limit per relay.

In my humble opinion the group common wires should just read "V1" or "G1" instead of "VAC DC x". But I'm not a specialist in IEC-compliant multilingual product labeling.

Refer to Publication 1762-UM001G-EN-P - March 2011 page 3-14 for

Figure 3.12 1762-L24AWA, 1762-L24BWA, 1762-L24AWAR, and 1762-L24BWAR​

Output Wiring Diagram.

VAC DC 0 is the supply voltage terminal for OUT0
VAC DC 1 is the supply voltage terminal for OUT1
VAC DC 2 is the supply voltage terminal for OUT2 and OUT3
VAC DC 3 is the supply voltage terminal for OUT4 and OUT5
VAC DC 4 is the supply voltage terminal for OUT6, OUT7, OUT8 and OUT9

Ok... I think I got it.

thanks