Wika LSO.25 Bedienungsanleitung PDF herunterladen (Seite 29)

WIKA operating instructions models LSO.06, LSO.25 29

13334603.01 09/2010 GB/D/F/E

Conditions:

■

P1 and P2 middle position, ca. 3 - 4 s time delay if P2 is open

■

Transducer correct connected and in function

■

No failure present

The time delay is, with S2 open, = switched on, must suciently be pushed for a long time

the button so that the complete test can go o. No test can go o, the alarm was already

entitled taken there is with S1 open, S2 open and sensor tip immersed. The same applies

S1 closed, S2 open and sensor tip dry. Failure, LED red and a yellow one ashes, can go

o no test at.

The test function makes possible a checking the measuring chain switching amplier

separately and e.g. post-connected signal amplier, signaling devices, control devices or a

correction device at a connected and operating transducer and a reliable information gives

about the proper function of the circuit board.

7.5 Operating characteristics relay SIGNAL

see table "Fault effect to dry/immersed", page 25

7.6 Operating characteristics relay FAILURE

The relay failure is energized in the normal operation and releases under the following

conditions (fail safe behavior):

■

The supply voltage breakes down (>100 ms)

■

The internal supply voltage for the intrinsic safe circuit breakes down

■

Short circuit (BR-WS) or interruption to infrared-LED (BR)

■

Short circuit (GN-WS) or interruption to phototransistor (GN)

Behavior

of the LED's see table

"Fault eect to dry/immersed", page 25

7. Conguration

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Wika LSO.25 Bedienungsanleitung Seite 29