BEKA BA377E-SS Manual Download

Page: 1 / 65

Issue: 6

4th May 2021

BA377E-SS

Rugged one input

intrinsically safe

Timer or Clock

Issue 6

Summary of Contents for BA377E-SS

Page 1: ...Issue 6 4th May 2021 BA377E SS Rugged one input intrinsically safe Timer or Clock Issue 6...

Page 2: ...ear sealing kit 6 OPERATION AS A TIMER 6 1 Initialisation 6 2 Controls when configured as a Timer 6 3 Displays when configured as a Timer 6 4 Timer structure 6 5 Configuration as a Timer 6 5 1 Accessi...

Page 3: ...YnC 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 11 Enable control...

Page 4: ...plied with each instrument 2 INTRINSIC SAFETY CERTIFICATION The BA377E SS has IECEx and ATEX gas certification This section of the instruction manual describes ATEX gas certification IECEx and other a...

Page 5: ...28V dc Ii 200mA dc Pi 0 84W Any certified Zener barrier or galvanic isolator with output safety parameters equal to or less than these limits may be used to power the BA377E SS The maximum equivalent...

Page 6: ...unlikely to make a significant difference to the allowable cable parameters 2 5 2 Sensors that require energising Switch contacts proximity detectors and open collector sensors require energising whic...

Page 7: ...application Almost any intrinsically safe relay with certification permitting the contacts to be connected to equipment in the hazardous area may be used When used as a Timer the BA377E SS may also b...

Page 8: ...internally connected together as shown in Fig 15 If any of these terminals are earthed as shown in Figs 1 2 the other common terminals should only be connected to the same earth i e the barrier busbar...

Page 9: ...e input must be maintained not momentary The BA377E SS input is not used when the instrument is configured as a Clock No Zener barrier is required in series with the input if the intrinsically safe se...

Page 10: ...n Uo 28V dc Io 200mA dc Po 0 84W The BA377E SS Timer may therefore be directly connected to and controlled by most certified intrinsically safe high level voltage signals The maximum permitted cable p...

Page 11: ...requirements for simple apparatus This allows the control output terminals A1 A2 and A3 A4 to be connected to almost any intrinsically safe circuit protected by a Zener barrier having output paramete...

Page 12: ...the hazardous area although it may be difficult to find isolators for some types of sensor The BA377E SS input energising link should be fitted to suite the output of the galvanic isolator not the se...

Page 13: ...hese requirements The BA377E SS contains a configurable debounce circuit to prevent false triggering of the instrument Three levels of debounce protection are available See section 6 5 6 3 2 4 Open co...

Page 14: ...may be used but a galvanic isolator or IS relay is required to transfer the contact closure into the hazardous area Fig 5 illustrates how a BA377E SS Timer may be reset from both the safe and the haza...

Page 15: ...ections 3 1 and 3 2 When correctly installed the BA377E SS Timer or Clock does not invalidate the certification of the Ex e Ex n or Ex p panel enclosure allowing installation with higher power control...

Page 16: ...idate the Ex p panel s impact and ingress protection as the front of the Timer or Clock complies with Ex p impact and ingress requirements Although mounted in an Ex p panel enclosure the BA377E SS rem...

Page 17: ...r Clock s captive gasket and ensure that it is not damaged before inserting the Timer or Clock into the panel enclosure aperture c If the enclosure panel is less than 1 0mm thick or is non metallic an...

Page 18: ...wing the requested units of measurement if this information is not supplied when the instrument is ordered a blank card will be fitted A pack of self adhesive scale cards printed with common units of...

Page 19: ...g the units of measurement specified when the instrument was ordered if the units are not specified a blank scale card will be fitted A pack of scale cards pre printed with common units of measurement...

Page 20: ...er 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 z...

Page 21: ...de See 6 5 15 Shows in succession firmware version number instrument function elap5e and any output accessories that are fitted A Dual Control Outputs Access to configuration menu 6 3 Displays when co...

Page 22: ...delay time automatically returns to Running Complete Entered automatically from Running when there are no more timing cycles to perform When the CYCLE5 function is enabled the timing cycle can be rep...

Page 23: ...e instrument using the or push button to adjust the flashing digit and the push button to transfer control to the next digit If the correct code has been entered pressing will cause the first paramete...

Page 24: ...e input by linking terminals 3 4 See section 6 5 5 dEbounCE Defines the level of debounce applied to the input to prevent false functioning dEFAuLt HEAVY LiGHt See section 6 5 6 Display Summary of fun...

Page 25: ...m the display mode to 5Et t and r5t dela See section 6 5 15 Display Summary of function uP or dn Direction of count Defines whether the Timer times down from 5Et t to zero or times up from zero to the...

Page 26: ...ontrol output 1 See section 6 5 26 CLr Gtot Resets grand total to zero This function resets the grand total which represents the total Timer run time from within the configuration menu when CLr YE5 is...

Page 27: ...as required press twice to return to the configuration menu or repeatedly press the or button until the required type of input is displayed and then press twice to return to the configuration menu One...

Page 28: ...of count selected in the uP or dn function oFF Lower display disabled If the CYCLE5 function is enabled the following three options are available 5td Lower display shows the number of cycles requeste...

Page 29: ...ess which will reveal the existing setting The required units can be selected by pressing the or button followed by the button to enter the selection and return to the configuration menu The options a...

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Page 32: ...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 33: ...tely 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 press w...

Page 34: ...figuration example in section 7 2 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 Contro...

Page 35: ...n be independently configured to turn on and off when the Timer is any of it s five states It s functions and configuration are identical to control output 1 described in sections 6 5 21 to 6 5 25 The...

Page 36: ...azardous area contact is closed The display is required in hours and minutes within the hazardous area and is to be reset to zero by a push button located in the same hazardous area not by the instrum...

Page 37: ...n is operated Fig 19 Control of valve in a hazardous area The required instrument configuration for this example are shown below Function Display Setting Access code CodE 0000 Function FunCtion ELAP5E...

Page 38: ...ct 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 are...

Page 39: ...e 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...

Page 40: ...tialisation 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 remote...

Page 41: ...hroughout 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 configurati...

Page 42: ...42...

Page 43: ...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 it turns on...

Page 44: ...et 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 men...

Page 45: ...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 46: ...e 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 enter...

Page 47: ...ng 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...

Page 48: ...ss 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 be...

Page 49: ...377E SS fails after it has been functioning correctly as a Clock the following table may help to identify the cause of the failure Symptom Cause Check No display No power supply That there is between...

Page 50: ...combustible dust in air is likely to occur occasionally in normal operation Zone 22 explosive atmosphere in the form of a cloud of combustible dust in air is not likely to occur in normal operation b...

Page 51: ...ssible to mount the intrinsically safe interface in the same Ex t panel enclosure as the Timer or Clock if in normal operation the outside temperature of the enclosure is not affected The Timer or Clo...

Page 52: ...the main section of this manual and both refer to the same standards Therefore the ATEX installation requirements specified in sections 2 3 and Appendix 1 of this manual may be used for IECEx installa...

Page 53: ...y therefore also be used for US and Canadian installations subject to compliance with the local codes of practice ETL and cETL intrinsic safety codes CL I Div 1 Groups A B C D T5 US IS gas Div cert CL...

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