Delta 20-140 User Manual download pdf (Page 3)

Product data sheet

Technical Description

RE88865175

Function Q: Star-Delta Starting

Description

On energisation, the star contact closes instantaneously during the timing period T. At the end of the timing period, the star contact opens. At

the end of the timing period Ti (interswitching time), while the contact is open, the delta contact closes and remains in this position.

Legend

Relay de-energised

Relay energised

Output open

Output closed

C Control contact

G Gate

R Relay or solid state output

R1/

2 timed outputs

inst.

The second output is instantaneous if the right position is selected

T Timing period

Ta Adjustable On-delay

Tr Adjustable Off-delay

U Supply

1 2 3 4 5

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Delta 20-140 User Manual Page 3