4. Cabling the inputs and outputs#

As already specified, the MVK01 provides 8 digital inputs and 8 digital outputs. Each group is divided into two sets, with its independent common terminal (Figure 10). By default, all inputs and outputs are normally open. Also, each group of four inputs or four outputs has its own common (i.e., OUT 1–4 share COM1, OUT 5–8 share COM2, IN 1–4 share COM3, and IN 5–8 share COM4).

The four connectors on the MVK01 for the digital IOs
The four connectors on the MVK01 for the digital IOs

Figure 10 The four connectors on the MVK01 for the 8 digital inputs and 8 digital outputs#

Warning

Each group of four inputs or outputs has its own independent common terminal.

You must use the four push-in cable connectors provided (Figure 2) to wire your inputs and outputs. Refer to the specifications of these connectors for details: Phoenix Contact, P/N 1778861.

Figure 11 and Figure 12 show the electric diagrams that you must follow to connect devices to the inputs and outputs of the MVK01.

Electric diagrams for connecting devices at the inputs
Electric diagrams for connecting devices at the inputs

Figure 11 Electric diagrams for connecting devices at the inputs#

Electric diagrams for connecting non-inductive and inductive loads at the outputs
Electric diagrams for connecting non-inductive and inductive loads at the outputs

Figure 12 Electric diagrams for connecting non-inductive and inductive loads at the outputs#

Warning

Inductive loads such as relays and solenoids must include a flyback (freewheel) diode in the circuit as depicted in Figure 12 (right). Otherwise, the MVK01 will be damaged permanently by the high voltage spike at the release of the inductive load..