Danfoss VLT 5000 Manuál s instrukcemi stáhnout pdf (Strana 34)

Wiring

• Digital Inputs

– Changing Setups

– 4-Position Switch and relay used for signal isolation

– P 004 must be set to Multi Setup

4-position with a relay for Changing Setups

In the diagram above a 4-position switch is used to shift between 4 different program

setups. Notice the binary chart for setups # 1 through # 4. In order for the setup change to

work, parameter 004 must be set for “Multi Setup”. A DPDT (double-pole double-throw)

relay is used when position 4 is selected. This is another way, besides diodes seen in the

last example, to keep feedback power from terminals 32 and 33. To complete the circuit for

the 24Vdc (terminal 12) relay one side of the relay is attached to terminal 39 (common for

power).

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Danfoss VLT 5000 Manuál s instrukcemi Strana 34