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5.17 Local reset of total and grand total.
         ‘LoC. R5Et’

This  function  contains two sub-functions  ‘t-rE5Et’
and ‘Gt-rE5Et’ which allow the total display and the
grand  total  to  be  independently  reset  using  the
instrument  push  buttons  without  access  to  the
configuration menu from the operating mode. 

When enabled, ‘t-rE5Et’ allows an operator to reset
the BA554E total display to zero by operating the

 and

 

 push buttons simultaneously for at least

two seconds.    To check the status of ‘t-rE5Et’
select 'LoC.r5Et'' from the configuration menu and
press

 

P.

   Using the 

 or 

 button select ‘t-rE5Et’

and  press  

P

  which  will  reveal  if  the  function  is

turned 'on' or 'oFF'.   Operating the 

 or 

 button

will toggle the display between the two conditions.
When set as required  pressing the

 

E

 

button  will

enter   the   selection   and   return   the   display   to   the
‘t-rE5Et’  sub-function.    The  remote  reset  facility
described  in  section  3.2  of  this  manual  is  not
affected by the status of this local reset function.

When  enabled,  ‘Gt-rE5Et’  allows  an  operator  to
reset the BA554E grand total to zero by operating
the  

E

 and

 

 push buttons simultaneously for at

least ten seconds.  To check the status of ‘t-rE5Et’
select 'LoC.r5Et'' from the configuration menu and
press

 

P.

   Using  the  

 or  

 button  select

‘Gt-rE5Et’  and  press  

P

  which  will  reveal  if  the

function is turned 'on' or 'oFF'.   Operating the 

 or

 button will toggle the display between the two

conditions.  When set as required pressing the

 

E

button  will  enter  the  selection  and  return  the
display to the  ‘Gt-rE5Et’ sub-function.

5.18  Security code:  ‘CodE’

Access to the instrument configuration menu may
be protected  by a  four  digit  security  code  which
must be entered to gain access.   New instruments
are configured with the default security code 0000
which  allows  unrestricted  access  to  all
configuration functions. 

To enter a new security code select 'CodE' from
the  configuration  menu  and  press

 

P

 which  will

cause  the  Rate  Totaliser  to  display  the  existing
security code with one digit flashing.  The flashing
digit  can  be  adjusted  using  the  

 and

 

 push

buttons,  when  set  as  required  operating  the  

P

button will transfer control to the next digit.   When
all the digits have been adjusted press

 

E

 to return

to  the  ‘CodE’  prompt  in  the  configuration  menu.
The revised security code will be activated when
the Rate Totaliser is returned to the display mode.
Please contact BEKA associates sales department
if the security code is lost.

5.19  Reset to factory defaults:  ‘r5Et’

This function enables the Rate Totaliser and the
lineariser  to  be  quickly  returned  to  the  factory
default  configurations  shown  in  sections  5.2  and
6.5

To  reset  the  Rate  Totaliser  or  lineariser  select
‘r5Et’ from the configuration menu and press 

P

, the

Rate Totaliser will display one of the reset options
‘ConF’ or ‘LtAb’.   

‘ConF’

Resets the Rate Totaliser to defaults

‘LtAb’

Resets the lineariser to defaults

Using the 

 or 

 push button select the required

sub-function and press  

P.

   To prevent accidental

resetting  the  request  must  be  confirmed  by
entering ‘5urE’.   Using the 

 button set the first

flashing digit to ‘5’ and press  

P

 to transfer control

to  the  second  digit  which  should  be  set  to  ‘u’.
When  ‘5urE’  has  been  entered  pressing  the  

E

button will reset the selected configuration menus
and return the display to the ‘r5Et’ function in the
configuration menu. 

5.20  Over-range

Numerical over-range of the rate or total displays is
indicated by all the digits displaying ‘9’ and all the
decimal points flashing. 

When  the  total  display  exceeds  99999999  or
-9999999 it will not automatically roll-over to zero
and  continue  counting,  but  the  grand  total  will
continue to count.   If it is likely that the total will
exceeds  99999999  or  -9999999  the  grand  total,
which  has  a  capacity  of  10

16

 and  –10

15

 counts,

should be reset to zero at the start of the operation.

If the total display exceeds 99999999 or -9999999
when the BA554E has been configured for          bi-
directional flow, the total display will be locked and
will not record flow in the opposite direction to the
over-range, although the grand total will continue
to function.

17

Содержание BA554E

Страница 1: ...Issue 3 4th July 2014 BA554E General Purpose 4 20mA loop powered field mounting Rate Totaliser Issue 3 ...

Страница 2: ...urce 6 1 1 Example Adding break points to a new Rate Totaliser 6 2 Calibration using internal reference 6 2 1 Example Adding break points to a new Rate Totaliser 6 3 Error messages 6 4 Under and over range 6 5 Default configuration 7 Calibration Examples 7 1 Using an external current source 7 2 Using the internal reference 8 Maintenance 8 1 Fault finding during commissioning 8 2 Fault finding afte...

Страница 3: ... twelve seconds All segments of the display are activated Loading message displayed Configuration message displayed Model and firmware version displayed Rate Totaliser starts functioning using configuration information stored in instrument s permanent memory Unless total and grand total displays have been reset to zero new flow will be added to the existing totals If the 4 20mA current is disconne...

Страница 4: ... then clear the grand total and Gt CLrd will be displayed to confirm the operation The instrument will then automatically return to the operating mode Selectable function in the configuration menu See section 5 17 Note Totalisation will continue until CLr no or CLr YE5 are displayed Resets the total display to zero when these two push buttons are operated simultaneously Selectable function in the ...

Страница 5: ...reset to zero by momentarily connecting the reset terminals RS1 and RS2 together with a resistance of less than 1kΩ as shown in Fig 2 Note The negative reset terminal RS2 is internally connected to the negative 4 20mA input terminal 3 The total display may also be reset to zero by operating the totalisers and push buttons simultaneously for more than two seconds See section 5 17 3 3 Remote flow in...

Страница 6: ...als 5 and 6 are internally joined and may be used for linking cable screens The Rate Totalisers earth terminal is connected to the carbon loaded GRP enclosure If this enclosure is not bolted to an earthed post or structure the earth terminal should be connected to the plant potential equalising conductor The enclosures are fitted with a bonding plate to ensure electrical continuity between the thr...

Страница 7: ...3 EMC The BA554E complies with the requirements of the European EMC Directive 2004 108 EC For specified immunity all wiring should be in screened twisted pairs with the screens connected at one point to the plants potential equalising conductor 7 ...

Страница 8: ...y be linearised using the square root extractor or the 16 segment lineariser which are selectable in the instrument s FunC block The rate display may then be calibrated using the CAL or 5Et functions to show the flow rate in the required linear engineering units Both the zero display at 4mA and the span display at 20mA are adjustable although for flow application the display at 4mA is usually zero...

Страница 9: ...be entered using the and push buttons and the P button to move control to the next digit When the correct four digit code has been entered pressing E will cause the first parameter FunC to be displayed If the code is incorrect or a button is not pressed within twenty seconds the Rate Totaliser will automatically return to the display mode Once within the configuration menu the required parameter c...

Страница 10: ... on or oFF See section 5 8 dP Decimal points Positions the decimal point in the rAtE and totAL displays See section 5 9 Display Summary of function CAL Calibration of the rate display using an external current source Enables the zero and span of the rate display to be adjusted using an external current source such as a calibrator When used with an accurate traceable calibrator this is the preferre...

Страница 11: ...and Gt rE5Et t rE5Et enables the total display to be reset to zero when and push buttons are operated simultaneously for more than 2 seconds Gt rE5Et enables the grand total to be reset to zero when E and push buttons are operated simultaneously for more than 10 seconds See section 5 17 CodE Security code Defines a four digit numeric code that must be entered to gain access to the configuration me...

Страница 12: ...12 ...

Страница 13: ...earity with bi directional flow Use of the lineariser is described in section 6 of this instruction manual 5 5 Display resolution rE5n This function defines the resolution of the least significant display digit of the rate display Decreasing the display resolution can improve the readability of a noisy signal Select rE5n from the menu and press P which will reveal the current display resolution To...

Страница 14: ...ay and identify the lower display variable but on the larger upper display The position of the decimal point can be positioned in the same way by operating the and push buttons when set as required enter the setting and return to the conditioning menu by operating the E button 5 10 Calibration of the rate display using an external current source CAL This function enables the zero and span of the r...

Страница 15: ...as been activated see section 5 17 To zero the grand total from within the configuration menu select Clr Gtot and press P which will cause the instrument to display Clr no Press the or button until CLr YES is displayed and then press P which will result in a 0000 prompt Using the and buttons and the P button to move to the next digit enter 5urE digit by digit to confirm the instruction Pressing E ...

Страница 16: ... the decimal point repeatedly operate the P button until the decimal point starts flashing The decimal point can then be positioned by pressing the or button When the required total scale factor has been set press E to enter the number and return to the 5CALE t prompt in the configuration menu 5 16 Clip off CLiP oFF To prevent totalisation of very low flow rates which over long periods may result ...

Страница 17: ...ay the existing security code with one digit flashing The flashing digit can be adjusted using the and push buttons when set as required operating the P button will transfer control to the next digit When all the digits have been adjusted press E to return to the CodE prompt in the configuration menu The revised security code will be activated when the Rate Totaliser is returned to the display mod...

Страница 18: ...Lineariser calibration using an external current source This method allows direct calibration of the lineariser with an external current source and is the preferred method when traceability is required If the exact system non linearity is unknown this method also allows direct calibration from the variable to be displayed The number of break point required should first be entered using the Add and...

Страница 19: ...19 ...

Страница 20: ...ollowing break point 6 1 1 Example Adding break points to a new Rate Totaliser When adding break points to a new Rate Totaliser or to a lineariser following resetting to the factory defaults using the LtAb function described in section 6 19 each additional break point should be added before the highest existing breakpoint The first additional break point should be added before the default break po...

Страница 21: ...he E button The corresponding rate display at each of the break points can now be defined using the diSP sub function Using the and buttons select the diSP sub function and press P which will reveal the starting point for the first break point 0 n where n is the total number of break points entered Press P and use the and buttons and the P button to move between digits to enter the required rate d...

Страница 22: ...her the root extractor or the lineariser are required The standard linear relationship should therefore be selected With FunC displayed press P which will reveal the existing function Using the or button select 5td Press E to enter this selection and return to the FunC prompt in the configuration menu Step 4 Define function of P push button Select C P from the configuration menu and press P to rev...

Страница 23: ... the totaliser scaling factor In this example the rate display is in litres per minute but the total display is required in cubic metres 5CALE t Units of rate display Units of total display There are 1 000 litres in a cubic metre thus litres cubic metres 1 litre 1 1000 litres 5CALE t 1000 From the configuration menu select 5CALE t and press P to reveal the current five digit dividing factor Using ...

Страница 24: ...n and total flow in cubic metres with a resolution of 0 1 cubic metres Total is to be shown on the upper large display and rate on the lower smaller display Totalisation is to occur for flow rates between 1 and 100 of maximum flow A security code of 1209 is required In the operating mode the BA554E is required to display the input current as a percentage of span when the P push button is operated ...

Страница 25: ...rminals 1 3 or terminals 3 12 if optional backlight is loop powered No power supply Confirm that a 4 20mA current is flowing in the loop Unstable rate display 4 20mA current is noisy or the flow signal is unstable Eliminate source of electrical noise Reduce resolution of the rate display to mask flow noise Unable to access configuration menu Incorrect security code Enter the correct security code ...

Страница 26: ...strument enclosure This plate can accommodate 1 row of 9 alphanumeric characters 10mm high or 1 row of 11 alphanumeric characters 7mm high or 2 rows of 18 alphanumeric characters 5mm high 9 2 Alarms CAUTION These alarms outputs should not be used for critical safety applications such as an emergency shut down system The BA554E Rate Totaliser can be supplied with factory fitted dual alarms with sol...

Страница 27: ...sed and current will only flow in one direction Ron less than 5Ω 0 7V Roff greater than 1MΩ Fig 11 Equivalent circuit of each alarm output The solid state output of each alarm may be used to switch any dc circuit with parameters equal to or less than V 40V I 200mA Fig 12 Typical alarm application Shown without recommended screened cables 27 ...

Страница 28: ...28 ...

Страница 29: ...ivated when the selected display rate or total equals the setpoint See section 9 2 5 Hi Lo Alarm function Defines the alarm function as High or Low See section 9 2 6 no nC Normally open or normally closed output Sets the alarm output open or closed in the non alarm condition See section 9 2 7 H5tr Hysteresis Adjusts the alarm hysteresis Only available on rate alarms See section 9 2 8 dELA Alarm de...

Страница 30: ...by pressing the or button followed by the E button to return to the alarm menu 9 2 7 Alarm output status no nC Configures the solid state alarm output to be open no or to be closed nC in the non alarm condition When deciding which is required care should be taken to ensure that the alarm output is fail safe as illustrated in Fig 10 no Alarm output open in non alarm condition nC Alarm output closed...

Страница 31: ...rate or total display depending upon which has caused the alarm alternates between the numerical value and the alarm reference ALr1 or ALr2 when the alarm output is activated If both alarm outputs are activated by one variable the display alternates between the numerical value and Alr1 2 To enable or disable the function select FL5H from the alarm menu and press P which will reveal the current set...

Страница 32: ...n to the display mode Fig 14 Setpoint adjustment from the display mode To adjust an alarm setpoint select 5Px1 or 5Px2 and press P which will reveal the current setting Each digit of the setpoint may be adjusted using the and push buttons and the P button to move control to the next digit When the required setpoint has been entered pressing E will return the display to the 5Px1 or 5Px2 prompt from...

Страница 33: ...pply via an intrinsically safe interface as shown in Fig 17 Fig 17 Separately powered backlight When separately powered the backlight is a current sink drawing a constant current when the supply is equal to or greater the minimum specified voltage Below this supply voltage the backlight continues to function but with reduced brilliance Current Minimum voltage 35mA 11V 9 4 External keypad For appli...

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