BEKA BA524D, Manual

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Step 5 Position dummy decimal point
Select 'd.P' from the main menu and
then press
P . Using the Up and Down
push-buttons position the dummy
decimal point in front of the least
significant digit.
Press
E to return to the main menu.
Step 6 Calibrate display
With any input current between 4 and
20mA select 'SEt' from the main menu
and press
P. The indicator will display
'ZErO' in the sub-menu; press P to
reveal the existing zero display. Using
the
Up , Down and P push-buttons enter
the required zero display of -50.0
Press
E to return to the 'ZErO' prompt.
Again with any input current between 4
and 20mA press the
Up push-button
and the indicator will display 'SPAn'.
Press
P to reveal the existing span
display. Using the Up , Down and P
push-buttons enter the required span
display of 1050.0 Press
E to return to
the 'SPAn' prompt. Press E again to
return to the main menu.
Step 7 Return to display mode
Following completion of calibration
return to the display mode by pressing
'E '.
7. MAINTENANCE
7.1 Fault finding during commissioning
If a BA524D fails to function during commissioning
the following procedure should be followed:
Symptom Cause Solution
No display Incorrect There should be 1V
wiring between terminals 1 &
3 with terminal 1
positive.
No display Incorrect Check that a current
and no volts wiring or is flowing in the loop.
between no power
terminals supply.
1 and 3.
Insufficient Check supply voltage
loop voltage and voltage drops
to operate
caused by all
indicator components in the loop.
Indicator Positive The indicator has been
displays 1 over-range incorrectly calibrated &
is trying to display a
number greater than
19999.
Indicator Negative The indicator has been
displays -1 Over-range incorrectly calibrated &
is trying to display a
number less than
-19999.
Unstable 4/20mA input Check loop supply
display has a large voltage.
ripple content.
Unable to Incorrect Enter correct security
enter the security code or fit security
programme code link in override position.
mode entered. See Fig 7.
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