Dungs GW A4 Series 매뉴얼 - 페이지 2

{카테고리_이름} Dungs GW A4 Series에 대한 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Dungs GW A4 Series 13 페이지. Compact pressure switch for gases and air
Dungs GW A4 Series에 대해서도 마찬가지입니다: 사용 설명서 (12 페이지), 사용 설명서 (12 페이지), 사용 설명서 (16 페이지), 매뉴얼 (12 페이지)

페이지 인쇄

Functional description

Single-acting pressure switch or pres-

sure limiter in pressure range.

The pressure switches and/or pres-

sure limiters work without using any

auxiliary power.

GW A4 pressure switch

The control unit responds to pressure.

If the set reference value is exceeded

or undershot, the circuit is switched

on, off or over.

GW A4 switching function

As pressure rises:

1 NC opens, 2 NO closes

As pressure falls:

1 NC closes, 2 NO opens

2 NO

COM

1 NC

Definition of switching difference

The switching difference p is the

pressure difference between the up-

per and lower switching pressures

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ÜB A4, NB A4 pressure limiters

The control unit responds to pressure.

Interlock is performed when the set

reference value is exceeded or under-

shot.

The "Locked" switching state is indi-

cated by a glow lamp.

Restart is only possible by activating

the reset button on the setting wheel of

the pressure limiter after the operating

pressure is attained.

ÜB A4: Switches and locks when the

set pressure is exceeded.

NB A4: Switches and locks when the

set pressure is undershot.

ÜB A4 switching function

As pressure rises

2 NO closes, 1 NC opens

Glow lamp ON, locked.

2 NO

COM

1 NC



Pressure

at meter

Setting tolerance

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Double pressure switch

GW A4 / GW A4

Combination of two GW A4 single pres-

sure switches flanged together. The

setting of the two reference values is

performed separately and independ-

ently. This permits a combination of

different reference value setting rang-

es. The same medium and pressure

are applied to the two control units.

NB A4 switching function

As pressure falls

2 NO opens, 1 NC closes

Glow lamp ON, locked.

COM

Operating state

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2 NO

1 NC

Upper switching

pressure

Lower switching

pressure

2 ... 6