BEKA BA526C, Manual

16

Step 3

Select frequency of max rejection

Scroll though the main menu until
'Cond' is displayed.

Enter the sub-

menu by pressing

P

twice and select

the 'FrE' function.

Using the

Up

or

Down

buttons select '50',

and then

press

E

twice to return to the main

menu.

Step 4

Define function of

 P

 push-button

Select 'C--P' from the main menu and
press

P

to reveal the function of the

P

button in the display mode. Select '4-
20' and return to the main menu by
pressing 

E

.

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 digital 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

000.0

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 1500.0 Press

E

to return to

the 'SPAn' prompt. Press

E

again to

return to the main menu.
The

analogue

bargraph

will

be

automatically calibrated to display 0
with 4mA input and full scale with 20mA
input.

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 BA526C 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

between

no power

loop.

terminals

supply.

1 and 3.

Insufficient

Check supply

loop voltage

voltage and

to operate 

voltage drops

indicator

caused by all
components in the
loop.

Indicator 

Positive

The indicator has

displays 1

over-range

been incorrectly
calibrated & is trying
to display a number
greater than 19999,
or input current is
greater than
approximately 1mA.

Indicator

Negative 

The indicator has

displays -1

0ver-range

incorrectly calibrated
& is trying to display
a number less than
-19999, or the input 
current is less than
approximately
3.5mA.

Unstable

4/20mA input

Check loop supply

display

has a large

voltage. 

ripple content.

Unable to  

Incorrect

Enter correct

enter the

security 

security code or fit

programme

code 

security link in

mode entered.

override 

position

See Fig 9.