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I have the relay described in this datasheet. I have the z-type. It has 6 pins on the bottom.

I want to control this relay with an Arduino device and all it has to do is work like a switch.

schematic

simulate this circuit – Schematic created using CircuitLab

How do I wire up my relay to function like this? Do I need to use all 6 pins? I don't understand the wiring diagram in the datasheet at all: -

enter image description here

I want to know what each pin on the relay does. Between which pins should I connect my load? Which pin controls the state of the relay?

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  • \$\begingroup\$ There is really not enough info. Are you askng what the pins on the relay are, or what circuit is needed to contol it with an MCU? Which also depends on which relay model it is to know the coil voltage, and what voltages you have available to drive the coil? \$\endgroup\$
    – Justme
    Mar 27, 2023 at 6:05
  • \$\begingroup\$ @Justme Yes, I want to know what each pin on the relay does. Between which pins should I connect my load? Which pin controls the state of the relay? \$\endgroup\$
    – Carl
    Mar 27, 2023 at 6:07
  • \$\begingroup\$ @Carl It would appear to be another Chinese quality datasheet. The two pins separate to the right are the coil, nothing else makes sense. \$\endgroup\$
    – Lundin
    Mar 27, 2023 at 6:56
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    \$\begingroup\$ @Lundin And in all other data sheets the white rectangle is the coil so what you suggest makes no sense. There are also other relays with 1Z contact arrangement and they match this relay. \$\endgroup\$
    – Justme
    Mar 27, 2023 at 7:24
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    \$\begingroup\$ @Lundin I don't know how one would design a relay like that - that's mechanical engineering. A relay with type QY23-012DC-Z has same pinout and data sheets show the coil as a coil. And the OP's relay is a signal relay, not intended for 4A 125VAC which can be just found by looking at the data sheet. \$\endgroup\$
    – Justme
    Mar 27, 2023 at 7:46

1 Answer 1

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The white rectangle is the coil so you drive the two pins leading to the coil.

The two pins on right are both the switch contact common terminal.

The pin on bottom left is the normally open switch contact.

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  • \$\begingroup\$ What? The white rectangle on the schematic is NOT the coil. These are standardized pin-outs, it's always the two separate pins that go to the coil. The datasheet is admittedly quite confusing. \$\endgroup\$
    – Lundin
    Mar 27, 2023 at 6:38
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    \$\begingroup\$ @Lundin But the white rectangle is the coil in the relay wiring diagram given. Two pins leading to the white rectangle are the coil pins. If they aren't then give a correct answer. \$\endgroup\$
    – Justme
    Mar 27, 2023 at 7:01

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