Mjk-automation Shuttle Ultrasonic Level Transmitter and Sensor Manual de usuario descargar pdf (Pagina 33)

SW 838023

GB Shuttle Manual 100316

Fault ﬁnding

Power failure

If one of the relay outputs is

set to NC (normally closed),

an external alarm is im-

mediately sent out at power

failure.

Fault ﬁnding table

Problem Cause Remedies

The display

is not lit

Power supply Wire mounting Is min. 10 mm of the insulation removed and ﬁrmly

mounted?

AC supply Is correct live voltage present between terminals L and

Is the right-hand fuse (40 mA@230 VAC, 100 mA@115

VAC) intact? Exchange if necessary.

DC supply Is 10 - 30 VAC present between terminals 10 and 12,

and is the polarity correct?

Is the left-hand fuse (200 mA) intact? Exchange if

necessary.

Shuttle

indicates

system error

Liquid

surface

Measuring Is the liquid surface foamy? Try changing the setting

method for measuring method from 'AP 1' to 'AP 2'.

(Shift + D)

Ultrasonic

sensor

Wire mounting Is a minimum of 10 mm of the insulation removed and

the wires ﬁrmly mounted?

Are the wires connected to the correct terminals? See

the connection diagram.

Cable Are there water in the connections, and are the

extensions extensions made correctly?

Condition Is the black part of the sensor miscoloured or

cracked? Miscolouring indicates that the sensor is not

suited for the environment on the installation site.

Function Is the sensor transmitting clicking sounds? If not, the

sensor is faulty.

Sensor Is the sensor mounted ABSOLUTELY VERTICAL?

mounting It is extremely important that the sensor is ﬁrmly

mounted in a vertical position. See the section

'Mechanical mounting of sensor'.

Measuring Is the sensor mounted so that the measuring distance

distance is less than the deadband and more that the max.

range? The max./min. measuring range must not be

exceeded.

EE-PROM error

Contack an MJK service

representative, if an EE-

PROM error appers.

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Mjk-automation Shuttle Ultrasonic Level Transmitter and Sensor Manual de usuario Pagina 33

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