Category: Relay Grouping

Simulating Larger Relays with Smaller Relays

Relay grouping commands can help you save money, and in some cases, a lot of money.  Simulating large expensive relays with smaller low-cost relays is an excellent way to provide greater functionality at a much lower cost point.  Relay grouping is the process of controlling relays in groups rather than individual relays.  For instance, we do not offer 20-Amp DPDT relay.  Locating such a relay may be impossible or expensive, so instead, you can simulate a 20-Amp DPDT relay using two 20-Amp SPDT relays for a much more reasonable and accessible price.  Another common request we receive is a 10-Amp

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Relay Grouping Commands

The following relay grouping commands can be used to activate relays in groups, simulating DPDT, 3PDT, 4DPDT, and up to 8PDT relays using low-cost SPDT relays.  Note the Neighbor Parameter (N) has a maximum allowed value of 7.  Also note the (N) value cannot extend into the next bank.  For instance, Relay 1 has up to 7 neighbors, but Relay 8 has no neighbors because Relay number 9 is located in the next relay bank (Bank 2).  Here is a table of Neighbors allowed for each relay: Here are a few examples that properly apply neighbors:

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