background image

23

   Display

       Summary of function               

di5P-2

Lower display

Configures   the   lower   display   to   show
set   time  

5Et   t

  or,   when   the  

CYCLE5

repeat function is activated, the restart
delay count-down plus the cycle count
number.

With 

CYCLE5

 not enabled:

Select

Lower display shows

5td

Set time 

5et t

oFF

Disables lower display.

See section 6.5.7

With 

CYCLE5

 enabled:

Select

Lower display shows

  

5td

Cycles requested and  
cycles performed with   
time-down   shown   during  
requested   delay   period.    
Brief   notification   of   timer  
status i.e. 

CYCLE

 or 

dELAY

 at start of each 

period.

  

LAbEL

Exactly as 

5td

 but with 

periodic notification of 
timer   status   i.e.  

CYCLE

  or  

dELAY

.

  

oFF

Disables lower display.

See section 6.5.7

5tAr5toP

Starting and stopping the timer

Defines  how  the Timer  is  started  and
stopped.

Start

  Stop

LoCAL

&

 button

*

 button

ControL 1

Input high

Input low

ControL 2

Input low

Input high

High and low inputs are specified for a
continuous   voltage   input.     For   other
types of   sensor input. 

See section 6.5.8

   Display

       Summary of function               

unit5

Units of display

Selects displayed units.

1

2 : 00 : 00

Hours, minutes & seconds

12 : 00

Hours & minutes 

*

     

     

30 : 00

Minutes & seconds

           

30

Seconds

Excludes   delay   of   optional   control
outputs   which   is   always   shown   in
seconds  and   the  grand   total  which   is
always shown in hours.

*

Only available if 

5et t

 and 

r5t dELA 

 ,

if   already   entered,   specify   zero
seconds or seconds which are exactly
divisible by sixty.

See section 6.5.9

5Et t

 

Set time

When controlling an external event via
the   optional   control   outputs   the
BA377E   will  

time-down

  from   the   set

time to zero or 

time-up

 from zero to the

set time.

Note:

 Timer will only start if a non zero

value is entered for set time 

5et t

.

See section 6.5.10

CYCLE5

Repeat timing cycle

Contains a sub-menu with three     sub-
functions,  

EnbL

,  

CYCL   Cnt

  and       

r5t

dELA

.

See section 6.5.11

Cycle function enable  

EnbL

Enables   or   disables   the  

cycle5

function   without   changing   the
parameters.

See section 6.5.12

Cycle count  

CYCL Cnt

Defines   the   number  of   times   that   the
timer cycle is repeated.

See section 6.5.13

Restart delay  

r5t dELA

Defines  the  time  delay  between timer
cycles.

See section 6.5.14

AC5Et t

Access  

5Et t  

and  

r5t dela  

from

display mode.

Enables  

5Et t

  and  

r5t dela

  to   be

adjusted from the display mode.   Also
contains   a   sub-function  

ACCd

  which

defines   a   separate   code   to   protect
access from the display mode to 

5Et t

and

 r5t dela 

.

See section 6.5.15

Summary of Contents for BA377E

Page 1: ...Issue 6 4th May 2021 BA377E Single input Intrinsically safe Timer or Clock Issue 6...

Page 2: ...n configured as a Timer 6 4 Timer structure 6 5 Configuration as a Timer 6 5 1 Accessing configuration functions 6 5 2 Summary of Timer configuration functions 6 5 3 Instrument function FunCtion 6 5 4...

Page 3: ...hronising time 5YnC t 9 4 7 Control output 1 Optional oP1 9 4 8 Enable Control output 1 EnbL 9 4 9 On and off times oP 1 on 1 oP 1 off 1 oP 1 on 2 oP 1 off 2 9 4 10 Control output 2 Optional oP2 9 4 1...

Page 4: ...arate appendixes to this manual The intrinsic safety of the instrument is unaffected by whether it is configured as a Timer or as a Clock 2 1 ATEX gas certification Notified Body Intertek Testing and...

Page 5: ...negative side is internally connected to the negative side of the power supply and the reset terminal RS2 See Fig 9 Some types of sensor that may be connected to the BA377E input such as a switch cont...

Page 6: ...ed to the BA377E energised input The sensor and wiring should be able to withstand a 500V rms insulation test to earth and the sensor should be located in the same hazardous area as the BA377E The max...

Page 7: ...tance and inductance between each set of control output terminals is Ci 24nF Li 8 H To determine the maximum permissible cable capacitance Ci should be subtracted from the maximum permitted external c...

Page 8: ...s Alternatively the sensor may be located in the safe area Fig 2 shows how an additional Zener barrier is used to transfer signals to the Timer in the hazardous area When more than one Zener barrier i...

Page 9: ...activated reed relays comply with these requirements The BA377E contains a configurable debounce circuit to prevent false triggering of the instrument Three levels of debounce protection are available...

Page 10: ...dous area which may be combined with the supply barrier so that only one package is required A diode return barrier is not suitable for this application Fig 1 illustrates how a BA377E may be reset fro...

Page 11: ...f the BA377E having the correct function may be used Fig 5 BA377E used with galvanic isolators Fig 5 illustrates the basic circuit that is used for all BA377E installations protected by galvanic isola...

Page 12: ...nput signal must fall below the lower threshold and rise above the upper threshold Sensor Switching thresholds Lower Upper Low voltage range 1 0V 3 0V High voltage range 3 0V 10 0V Proximity detector...

Page 13: ...parameters equal to or less than Uo 28V dc Io 200mA dc Po 0 84W The BA377E Timer may therefore be directly connected to and controlled by most certified intrinsically safe high level outputs The maxi...

Page 14: ...meters complying with the requirements for simple apparatus This allows the control output terminals A1 A2 and A3 A4 to be connected to almost any certified intrinsically safe circuit protected by a g...

Page 15: ...ogether with the recommended panel cut out dimensions To achieve an IP66 seal between the instrument enclosure and the instrument panel the smaller tolerance aperture must be used Although the front o...

Page 16: ...ng clamps 4 4 Scale card The BA377E s units of measurement are shown on a printed scale card in a window at the right hand side of the display The scale card is mounted on a flexible strip that is ins...

Page 17: ...rough which a scale card showing the units of measurement such as hours can be seen New instruments are fitted with a scale card showing the units of measurement specified when the instrument was orde...

Page 18: ...mer cycle can be accomplished via the front panel push buttons or by a remote contact A grand total time is maintained which can be viewed by operating the front panel push buttons It may be reset to...

Page 19: ...iguration function See 6 5 20 To reset the grand total to zero from the display mode press the buttons for ten seconds until CLr no is displayed using the or button change the display to CLr YE5 and p...

Page 20: ...lete The lines between the circles represent the event required to move the Timer between states e g to initiate timing the Timer is moved from the Reset state to the Running state by a start event Th...

Page 21: ...failure Local total reset t rE5Et on Local grand total reset Gt rE5Et oFF External reset E r5et 5td Enable control output 1 EnbL oFF Enable control output 2 EnbL oFF Optional output 6 5 1 Accessing co...

Page 22: ...ion functions When read in conjunction with Fig 14 it provides a quick aid for configuring the Timer If more detail is required each section of this summary contains a reference to a full description...

Page 23: ...12 00 Hours minutes 30 00 Minutes seconds 30 Seconds Excludes delay of optional control outputs which is always shown in seconds and the grand total which is always shown in hours Only available if 5e...

Page 24: ...l total reset r5Et EnbL When on is selected Timer is reset to zero or 5et t if timing down when the and buttons are operated simultaneously for more than 3 seconds in the display mode See section 6 5...

Page 25: ...n menu If CloC is displayed press the or button to change the setting to ELAP5E followed by the button which will result in a 0000 prompt being displayed with the first digit flashing This is a reques...

Page 26: ...1600 s 40 s Heavy 3200 s 350 s Light 400 s 5 s 6 5 7 Lower display di5P 2 The configuration of the lower display which has six 12mm high digits depend upon whether the repeat timer function CYCLE5 whi...

Page 27: ...on menu Options available are Voltage inputs or control from front panel Display Start Stop ControL 1 Input high Input low ControL 2 Input low Input high LoCAL button button Contact and open collector...

Page 28: ...28...

Page 29: ...29...

Page 30: ...o the next digit When set as required enter the selection and return to the cycl cnt prompt in the sub menu by operating the button 6 5 14 Restart delay r5t dela This sub function defines the time del...

Page 31: ...diately Continue When power is restored the Timer will continue from where it stopped without any manual intervention To check or change the function select P fail from the configuration menu and pres...

Page 32: ...examples in section 7 2 and 7 3 of this manual illustrate the use of the control outputs Further examples can be found in Application Guide AG374 which is available on the BEKA website 6 5 22 Control...

Page 33: ...select op1 dELA from the control output 1 sub menu and press which will reveal the existing delay time with one digit flashing The flashing digit can be adjusted using the or button and the button to...

Page 34: ...u When 5urE has been entered pressing the button will reset all the configuration functions and return the instrument to the display mode Note r5Et dEF does not reset the grand total to zero 7 TIMER A...

Page 35: ...ich it stopped when the start button is operated Fig 16 Control of valve in a hazardous area The required instrument configuration for this example are shown below Function Display Setting Access code...

Page 36: ...t BEKA if code is lost 8 2 Fault finding after commissioning ENSURE PLANT SAFETY BEFORE STARTING MAINTENANCE Live maintenance is permitted on intrinsically safe equipment installed in a hazardous area...

Page 37: ...regularly checked Inspection frequency should be chosen to suit the environmental conditions 8 5 Guarantee Instruments which fail within the guarantee period should be returned to BEKA associates or o...

Page 38: ...wing initialisation the instrument will display a flashing display which is a request for the local time to be entered The clock will not start to function until a display time has been entered or the...

Page 39: ...out this manual push buttons are shown as and and legends displayed by the Clock are shown in a seven segment font as they appear on the instrument e g di5PLAY and CodE Access to the configuration men...

Page 40: ...40...

Page 41: ...rol output 1 Optional Control output 1 can turn on output closed and off output open twice in each twenty four hour period This function contains five sub function EnbL Enables output 1 and defines if...

Page 42: ...time is entered the Clock will display a flashing 00 00 00 or 00 00 for 24 hour formats or A12 00 00 or A12 00 for 12 hour formats To adjust the clock set time select 5Et from the configuration menu a...

Page 43: ...tered return to the configuration menu by pressing the button twice 9 4 10 Control output 2 Optional oP2 Control output 2 is an optional factory fitted output which can be configured to turn on output...

Page 44: ...m the display mode may be protected by a four digit alphanumeric security code which must be entered to gain access Default security code 0000 allows unrestricted access With ACCd displayed press to e...

Page 45: ...will then change the instrument to a Clock and return the display to FunCtion in the configuration menu Step 3 Select display format Using the or button select di5PLAY in the configuration menu and pr...

Page 46: ...cess to the configuration menu Using the and buttons select CodE from the configuration menu and press which will reveal 0000 with the first digit flashing This example requires the security code to b...

Page 47: ...nly certified test equipment should be used unless a gas clearance certificate is available If a BA377E fails after it has been functioning correctly as a Clock the following table may help to identif...

Page 48: ...8 11 6 Customer comments BEKA is always pleased to receive comments from customers about our products and services All communications are acknowledged and whenever possible suggestions are implemented...

Page 49: ...icate may be downloaded from www beka co uk www iecex com or requested from the BEKA sales office A1 2 Installation The IECEx intrinsic safety parameters are identical to the ATEX safety parameters de...

Page 50: ...e systems shown in sections 2 and 3 of this manual may therefore also be used for US and Canadian installations subject to compliance with the local codes of practice ETL and cETL intrinsic safety cod...

Page 51: ...51...

Page 52: ...52...

Page 53: ...53...

Page 54: ...54...

Page 55: ...55...

Page 56: ...56...

Page 57: ...57...

Page 58: ...58...

Page 59: ...59...

Page 60: ...60...

Page 61: ...61...

Page 62: ...62...

Reviews: