Siemens SITRANS L Pointek ULS200 사용 설명서 - 페이지 29

{카테고리_이름} Siemens SITRANS L Pointek ULS200에 대한 사용 설명서을 온라인으로 검색하거나 PDF를 다운로드하세요. Siemens SITRANS L Pointek ULS200 47 페이지. Ultrasonic non-contacting switch

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1. Startup

6.4

Low level alarm switch

This application uses the device to provide one or two low level alarms.

If the material can fall below the unit's range, the device loses the echo, and if prolonged,

defaults to fail-safe operation. The fail-safe default should be set to suit the application.

Fail-safe = 1, 2, or 3

①

Low-low (e.g. 4.5 m)

②

Low (e.g. 3.5 m)

③

Blanking (e.g. 0.5 m)

④

Range limit (e.g. 5.5 m)

Application adjustments

Alarm function

Alarm setpoint

Fail-safe alarm

Pointek ULS200

Operating Instructions, 01/2019, A5E32268616-AB

Fail-safe = 2 or 3

①

Low-low (e.g. 4.5 m)

②

Low (e.g. 3.5 m)

③

Blanking (e.g. 0.5 m)

④

Range limit (e.g. 5.5 m)

3 - low/low-low alarm

•

5 - low/LOE alarm

•

Set the low and/or low-low alarms to the desired

values.

1 - high

•

2 - low

•

3 - hold

•