Velleman-projects K2633 Assembly instructions Manual do Utilizador descarregar pdf (Página 6)

Construction & connection

7. Connection

Connect the power voltage of the relay to the 9V DC points.

 This voltage needs not to be stabilised.

The connection of the loads to the relays is very simple : at the outputs the name of the contact is given.

• C stands for the common contact.

• NC for the contact of the inverter that is closed in rest.

• NO for the normal open contact.

In most cases you will only use C and NO.

 In order to avoid disturbances and bum-in of the contacts when switching inductive loads (motors, heavy-duty-relays, ...)

we recommend to install a VDR over the contacts.

When this should not be an adequate cure against disturbances in the control circuit, you have to place the relay print

nearby the load itself.

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Velleman-projects K2633 Assembly instructions Manual do Utilizador Página 6