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6

1.5  INSTALLATION

1.5.1 Location

The BA364D is housed in a robust IP66 glass
reinforced polyester (GRP) enclosure
incorporating an armoured glass window and
stainless steel fittings.  It is suitable for exterior
mounting in most industrial environments,
including offshore and waste water treatment
installations.  Please consult BEKA associates if
high vibration is anticipated.

The BA364D enclosure is surface mounting.
Accessory kits described in sections 1.9.2 & 1.9.3
of this manual enable the instrument to be
mounted onto a vertical or horizontal pipe, or to
be supported by conduit.

The field terminals and the two mounting holes
are located in a separate compartment with a
sealed cover allowing the instrument to be
installed without exposing the display assembly.

The BA364D earth terminal is connected to the
internal EMC filters. To achieve the stated radio
frequency interference rejection this terminal
should be connected to a local earth, or to a
cable screen which is earthed in the safe area.
The BA364D enclosure is supplied with a
bonding plate to ensure electrical continuity
between the three conduit / cable entries.

1.5.2 Installation Procedure

Fig 1.2 illustrates the instrument installation
procedure.

a.

Remove the instrument terminal cover by
unscrewing the two captive 'A' screws.

b.

Mount the instrument on a flat surface and
secure with two M6 screws through the 'B'
holes.  Alternatively use one of the
mounting kits described in sections 1.9.2
and 1.9.3

c.

Remove the temporary dust seals from the
three cable entries and install the required
glands, conduit fittings or blanking plugs.

Note:

  the temporary dust seals do not

provide IP66 protection.

d.

Connect the field wiring to the terminals as
shown in Fig 1.3.

e.  Replace the instrument terminal cover and

evenly tighten the two 'A' screws.

Fig 1.2   BA364D installation procedure

1.5.3  EMC

The BA364D complies with the requirements of
the European EMC Directive 89/336/EEC.  For
specified immunity all wiring should be in
screened twisted pairs, with the screens earthed
in the safe area.   To prevent circulating currents,
cable screens should only be earthed at one
point in the safe area.

The BA364D earth terminal should be connected
to a local earth, or to a cable screen which is
earthed in the safe area.

Summary of Contents for BA364D

Page 1: ...Issue 10 14th March 2007 BA364D Intrinsically safe externally powered field mounting counter timer tachometer and clock Issue 10 ...

Page 2: ... 1 Units of measurement and instrument identification 1 9 2 Pipe mounting kits 1 9 3 Stem mounting kit 1 9 4 Optional external push buttons 1 9 5 Optional control outputs alarm outputs 1 9 5 1 Solid state output 1 9 5 2 Intrinsic safety 1 9 6 Optional pulse output 1 9 6 1 Intrinsic safety 1 9 7 Optional 4 20mA output 1 9 7 1 Intrinsic safety 1 9 8 Optional display backlight Appendix 1 ATEX dust ce...

Page 3: ...or 2 wire proximity detector inputs Accessories include a pulse output 4 20mA analogue output and two solid state control outputs Fig 1 1 Simplified block diagram of BA364D 1 2 1 Counter When configured as a counter the BA364D will accept pulses on one or both inputs and may be programmed to display Input A Input B Input A Input B Input A direction controlled by input B Input A and B quadrature in...

Page 4: ...ndix 1 which describes installations complying with BS EN 50281 1 2 1999 1 4 2 Power supply When installed in a hazardous area the BA364D must be powered via a Zener barrier or galvanic isolator from a dc supply located in the safe area The input safety parameters for terminals 1 and 2 are Ui 28V dc Ii 100mA dc Pi 0 7W Any certified Zener barrier or galvanic isolator with output safety parameters ...

Page 5: ...y is required to transfer the contact closure into the hazardous area Almost any intrinsically safe relay with certification permitting the contacts to be connected to equipment in the hazardous area may be used A positive diode return Zener barrier may also be used The system certificates list suitable devices and define the maximum cable parameters 1 4 5 Zones gas groups and T rating The BA364D ...

Page 6: ...lied with a bonding plate to ensure electrical continuity between the three conduit cable entries 1 5 2 Installation Procedure Fig 1 2 illustrates the instrument installation procedure a Remove the instrument terminal cover by unscrewing the two captive A screws b Mount the instrument on a flat surface and secure with two M6 screws through the B holes Alternatively use one of the mounting kits des...

Page 7: ... the inner row of the five pin connector shown in Fig 1 4 Fig 1 4 Location of security override link 1 7 SERVICING A fault finding guide is contained in each section of this manual If this does not reveal the cause of the problem our sales department will be pleased to help you Faulty BA364D instruments should be returned to BEKA associates for repair or to our agent in your area for repair 1 7 1 ...

Page 8: ...395 stem mounting kit comprises a short length of stainless steel conduit with a male M20 x 1 5 thread at both ends This enables the BA364D to be connected to and supported by any equipment having an M20 conduit port 1 9 4 Optional external push buttons For applications requiring frequent access to the programme menus the BA364D can be supplied with an external membrane keypad These push buttons w...

Page 9: ...V Io 100mA dc Po 0 7W The maximum equivalent capacitance and inductance of the BA364D pulse output is Ci 20nF Li 20µH To determine the maximum permissible cable parameters these figures must be subtracted from the maximum permitted cable capacitance and inductance specified by the system certificate of the circuit connected to the BA364D usually a Zener barrier or galvanic isolator 1 9 7 Optional ...

Page 10: ...rrier or a galvanic isolator as shown in Fig 1 6 Any certified Zener barrier may be used providing the output parameters do not exceed Uo 28V Io 159mA Po 0 8W The system certificate lists some of the galvanic isolators which may be used The maximum equivalent capacitance and inductance at the backlight terminals is Ci 40nF Li 30µH To determine the maximum permissible cable parameters these figures...

Page 11: ...plosive atmosphere in the form of a cloud of 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 but if it does occur will only persist for a short period Be used with dusts having a Minimum Ignition Temperature of Dust cloud 120o C Dust layer on BA364D ...

Page 12: ... ANSI ISA RP12 06 01 Installation of Intrinsically Safe Systems for Hazardous Classified Locations and with the National Electrical Code ANSI NFPA70 The BA364D has a T4 rating at ambient temperatures up to 60o C and may be used with the following gases and dusts Intrinsic Safety Division 1 or 2 Class I Group A B Group C Group D Class II Group E F G Class III Zone 0 1 or 2 Class 1 Group IIC Group I...

Page 13: ...OTE 8 10 SEE NOTE 7 BA364D BA368C Entity Parameters Terminals 1 2 Ui 30V Ii 100mA dc Pi 0 7W Ci 0 02µF Li 0 02mH Terminals 7 8 Ui 30V dc Uo 3 8V dc Ii 100mA Io 1 6mA dc Pi 0 7W Po 2mW Ci 0 02µF Ca 1000µF Li 0mH La 1000mH Terminals B1 B2 Ui 30V dc Ii 159mA dc Pi 0 8W Ci 0 04µF Li 0 03mH Terminals P1 P2 Ui 30V dc Ii 100mA dc Pi 0 7W Ci 0 02µF Li 0 02mH Terminals C1 C2 Ui 30V dc Ii 100mA dc Pi 0 7W C...

Page 14: ...UNCLASSIFIED SEE NOTE 4 SEE NOTE 4 SEE NOTE 10 SEE NOTE 6 OR BA364D BA368C Entity Parameters Terminals 1 2 Ui 30V Ii 100mA dc Pi 0 7W Ci 0 02µF Li 0 02mH Terminals 7 8 Ui 30V dc Uo 3 8V dc Ii 100mA Io 1 6mA dc Pi 0 7W Po 2mW Ci 0 02µF Ca 1000µF Li 0mH La 1000mH Terminals B1 B2 Ui 30V dc Ii 159mA dc Pi 0 8W Ci 0 04µF Li 0 03mH Terminals P1 P2 Ui 30V dc Ii 100mA dc Pi 0 7W Ci 0 02µF Li 0 02mH Termin...

Page 15: ...ual to or greater than Ccable Ci 5 Hazardous classified location equipment complying with the requirements of note 4 and the input parameters listed on Sheets 1 and 2 for Terminals 3 and 4 and 5 and 6 or simple apparatus 6 Simple apparatus or FM approved associated apparatus with contacts having entity parameters complying with the following requirements Uo or Vt equal to or less than Ui Io or It ...

Page 16: ...n a hazardous classified location the BA364D shall be fitted Any metallic or plastic cable gland or conduit hub that provides SSTG 1 STG 1 STAG 1 Permitted gland or conduit hub Killark Glands together and grounded 9 10 CAUTION CMCXAA050 MCR050 MCX050 Metallic glands and hubs must be grounded see note 9 Class I Class II and III 8 Class CHMG 50DT Crouse Hinds Myler hubs the required environmental pr...

Page 17: ... D Class II Division 2 Groups E F G Class III Class I Zone 2 Group IIC or SEE NOTE 5 7 SEE NOTE 4 BA364D BA368C Terminals 1 2 Vmax 30V Ci 0 02µF Li 0 02mH Terminals 7 8 Vmax 30V dc Voc 3 8V dc Ci 0 02µF Isc 1 6mA Li 0mH Ca 1000µF La 1000mH Terminals B1 B2 Vmax 30V dc Ci 0 04µF Li 0 03mH Terminals P1 P2 Vmax 30V dc Ci 0 02µF Li 0 02mH Terminals C1 C2 Vmax 30V dc Ci 0 002µF Li 0 008mH Terminals 3 4 ...

Page 18: ...1 A3 A4 A2 C2 C1 SEE NOTE 1 2 UNCLASSIFIED LOCATION 1 P1 P2 B1 B2 7 8 2 LOCATION EQUIPMENT UNCLASSIFIED SEE NOTE 7 BA364D BA368C Terminals 1 2 Vmax 30V Ci 0 02µF Li 0 02mH Terminals 7 8 Vmax 30V dc Voc 3 8V dc Ci 0 02µF Isc 1 6mA Li 0mH Ca 1000µF La 1000mH Terminals B1 B2 Vmax 30V dc Ci 0 04µF Li 0 03mH Terminals P1 P2 Vmax 30V dc Ci 0 02µF Li 0 02mH Terminals C1 C2 Vmax 30V dc Ci 0 002µF Li 0 008...

Page 19: ...nel mounting clips should be used Minimum panel thickness should be 2mm 0 08inches Steel 3mm 0 12inches Aluminium Outside panel finish should be smooth free from particle inclusions runs or build up around cut out Panel cut out should be 66 2 x 136 0mm 0 0 0 5 2 60 x 5 35 inches 0 00 0 02 Edges of panel cut out should be deburred and clean Each panel mounting clip should be tightened to between 20...

Page 20: ...n a hazardous classified location the BA364D shall be fitted Any metallic or plastic cable gland or conduit hub that provides SSTG 1 STG 1 STAG 1 Permitted gland or conduit hub Killark Glands together and grounded 6 7 CAUTION CMCXAA050 MCR050 MCX050 Metallic glands and hubs must be grounded see note 7 Class I Class II and III 5 Class CHMG 50DT Crouse Hinds Myler hubs the required environmental pro...

Page 21: ...te scale factor 2 5 10 Rate display filter 2 5 11 Timebase 2 5 12 Direction of count 2 5 13 Reset value 2 5 14 Local reset 2 5 15 Resetting grand total 2 5 16 Security code 2 6 Optional Alarms 2 6 1 Programming and adjustment 2 6 2 Alarm enable 2 6 3 Type of alarm 2 6 4 Setpoint adjustment 2 6 5 Alarm function 2 6 6 Alarm output status 2 6 7 Hysteresis 2 6 8 Alarm delay 2 6 9 Alarm silence time 2 ...

Page 22: ... functioning using the programmed parameters stored in permanent memory If during operation the power supply is interrupted all programme parameters the displayed total and the grand total will be stored in permanent memory 2 1 2 Controls The BA364D counter is controlled and calibrated via four push button switches which are located behind the instrument control cover or as an option on the outsid...

Page 23: ...ameters of the terminals to which they are connected Only one polarity of Zener barrier i e positive or negative may be used with each instrument To assist with system design the Zener barrier system certificate specifies the maximum output parameters of the Zener barriers that may be connected to the BA364D and defines the maximum cable parameters Diode return barriers are identified by manufactu...

Page 24: ...afe area Any switch may be used but a Zener barrier is required to transfer the contact closure into the hazardous area A diode return barrier may be combined with the supply barrier so that only one dual channel device is required The system certificate lists some of devices that may be used Fig 2 1 illustrates how the BA364D counter total display may be reset from both the safe and the hazardous...

Page 25: ...be directly connected to the input terminals If the BA364D is located in a hazardous area but the transducers are in the safe area a galvanic isolator is required to transfer the transducer output s to the instrument The system certificate defines some of the devices which may be used 2 4 3 Resetting the total display When terminals 7 8 are connected together the total display will be reset To ach...

Page 26: ...gue output and the re transmitted pulse output When read in conjunction with Fig 2 3 it provides a quick aid for programming the instrument If more detail is required each section contains a reference to a full description of the function Programming details for the optional alarms analogue 4 20mA output and the re transmitted pulse output are contained in sections 2 6 2 7 and 2 8 SUMMARY Display ...

Page 27: ...r pulses at inputs A and B increment or decrement the total display See section 2 5 12 Display Description of function rSET UAL Reset value Defines a pre set number to which the display will be set when the BA364D is locally or remotely reset Allows the instrument to count down from a preset number See section 2 5 13 LOC rSEt Local reset of total display When turned On the total display may be res...

Page 28: ...28 ...

Page 29: ...pe select InPut A from the menu and press P which will reveal the current input type Pressing the Up or Down button will scroll through the five options UOLts Voltage input Threshold 1V and 3V 5kHz max COIL Low voltage Threshold 20mV peak 5kHz max Pr dEt NAMUR proximity detector Threshold 1 2 and 2 1mA 5kHz max COntACt Switch contact Threshold 100 and 1000 100Hz max OP COL Open collector Threshold...

Page 30: ...ontrol to the lower display When the decimal point s have been positioned as required press E to return to the main menu Note It is only necessary to position the decimal point in the lower display if it is activated see 2 5 7 or a rate alarm or a 4 20mA rate output is required 2 5 7 Lower display dISPLAY 2 This function turns the lower rate display on or off When turned off the BA364D will displa...

Page 31: ... 5 The second digit defines the deviation from the displayed rate at which the filter will be overridden and the rate display will move rapidly to the new value Second digit Magnitude of step change which will produce a rapid response X0 Off X1 1 X2 2 X3 4 X4 8 X5 12 X6 16 X7 24 X8 32 X9 64 By careful adjustment of the two parameters a stable display with an acceptable step input response can be o...

Page 32: ... See Figs 2 1 and 2 2 2 5 15 Resetting grand total CLr Gtot The grand total is a separate eight digit counter which duplicates the total display but is not cleared when the total display is reset The grand total may be viewed when the instrument is in the display mode by operating the E and Down push buttons simultaneously The grand total can only be reset to zero from the CLr Gtot function in the...

Page 33: ...ate on the total or the rate display See section 2 6 3 SPt1 Alarm setpoint 1 or SPr1 Adjusts the alarm setpoint The alarm is activated when the display equals the setpoint See section 2 6 4 HI LO Alarm function Defines whether the alarm has a high or low function See section 2 6 5 no nc Normally open or normally closed output Determines whether the single pole alarm output is open or closed in the...

Page 34: ...34 ...

Page 35: ...D power supply is turned off or disconnected both the alarm outputs will open irrespective of whether normally open or normally closed outputs have been selected Therefore an open output should be the alarm condition for fail safe operation To check the alarm output status select no nc from the alarm menu and press P to reveal the current setting The function can be changed by pressing the Up or D...

Page 36: ...nts from the display mode via a separate optional security code To define this four digit numeric code press E to return to the EnbL prompt followed by the Up or Down button to select the access code prompt AcCd Pressing P will then reveal the current security code with one digit flashing The code may be changed by operating the Up or Down push buttons and pressing the P button to transfer control...

Page 37: ... the 4 20 tYPE function which enables the 4 20mA output to be controlled by the total or rate display Press P select the required source and then return to the sub menu by pressing the E button The displayed values which correspond to 4mA and 20mA output may now be defined Using the Up or Down push button select the 4 000 prompt for the function which defines the display at which the output curren...

Page 38: ... is generated is defined by the diUidE function When set to 1 an output pulse will be generated each time the least significant digit of the total display is incremented This may be reduced in multiples of 10 e g if diUidE is set to 1 000 the least significant digit must be incremented 1 000 times before an output pulse is generated Output pulse width is determined by the durAtion function which a...

Page 39: ...git enter the pass word SurE Note S is entered as 5 Finally press E which will execute the function change and return the instrument to the FunctIon prompt in the main menu Step 3 Select the type of inputs Using the Up or Down button scroll through the main menu until InPut A is displayed press P to reveal the existing setting Using the Up or Down buttons select Pr dEt the input for a 2 wire proxi...

Page 40: ...ch will show the current figure with one digit flashing To position the decimal point operate the P push button to move the flashing digit to the second least significant digit Pressing the Up and Down buttons simultaneously will then fix the decimal point in front of the least significant digit Using the Up and Down buttons to adjust each digit in turn and the P button to transfer control between...

Page 41: ...14 Turn local reset off In this example the operator must not be able to zero the total position display from the instrument front panel The local reset function should therefore be turned off Select LOC rSEt from the main menu and press P which will reveal if it is turned On or OFF Using the Up or Down button toggle the display to OFF and press E to return to the LOC rSEt prompt Step 15 Define th...

Page 42: ...uts 4 20mA output is constant 3 5mA Counter parameters have been changed Programming of 4 20mA output see 2 7 1 Re transmitted pulse output not working Incorrect programming Counter is programmed for A b input see 2 5 4 2 10 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 43: ...te 2 5 7 Resetting total 2 3 3 2 4 3 2 5 14 Function of instrument 2 5 2 Grand total 2 1 2 1 3 Resetting 2 5 15 Guarantee 1 7 2 Galvanic isolator use with 2 4 Input 2 3 2 2 4 2 2 5 3 Installation 1 5 Location 1 5 1 Maintenance 2 10 Routine 1 7 1 Power supply 2 3 1 2 4 1 Pulse output optional 2 8 Intrinsic safety 1 9 6 1 Programming adjustment 2 8 1 Fig 2 7 Subject Section Rate Display filter 2 5 1...

Page 44: ...44 ...

Page 45: ... of input 3 5 4 Start and stop 3 5 5 Units of display 3 5 6 Set time 3 5 7 Access set time setpoint 3 5 8 Direction of count 3 5 9 Lower display set time 3 5 10 Continue cycle 3 5 11 Local reset of timer 3 5 12 Resetting elapsed time grand total 3 5 13 Security code 3 6 Optional Control Outputs 3 6 1 Programming and adjustment 3 6 2 Control output enable 3 6 3 Control output on at 3 6 4 Control ou...

Page 46: ...trument control cover or as an option on the outside of the instrument control cover see 1 9 4 In the display mode i e when the instrument is timing the switch functions are Description of Switch Functions Down When enabled starts the timer See section 3 5 4 Up When enabled stops the timer See section 3 5 4 E Down While these buttons are pushed the display will show the grand total time in hours a...

Page 47: ...e or negative may be used with each instrument To assist with system design the Zener barrier system certificate specifies the maximum output parameters of the Zener barriers that may be connected to the BA364D and defines the maximum cable parameters Diode return barriers are identified by manufacturer s type number although alternatives may be used The basic system used for all BA364D hazardous ...

Page 48: ...ed to transfer the contact closure into the hazardous area A diode return barrier may be combined with the supply barrier so that only one dual channel device is required The system certificate lists some of devices that may be used Fig 3 1 illustrates how the timer may be reset from both the safe and the hazardous areas 3 3 4 Options When the BA364D is configured as a timer optional control outpu...

Page 49: ... safe voltage may be directly connected to these two inputs If the BA364D is located in a hazardous area but the transducer s is in a safe area a galvanic isolator is required to transfer the transducer output to the instrument The system certificate defines some galvanic isolators which may be used 3 4 3 Resetting the timer When terminals 7 8 are connected together the timer will be reset to zero...

Page 50: ...l outputs When read in conjunction with Fig 3 3 it provides a quick aid for programming the instrument If more detail is required each section contains a reference to a full description of the function Programming details for the optional control outputs are contained in section 3 6 SUMMARY Display Description of function Function Function of instrument Enables the BA364D to be conditioned as a co...

Page 51: ...oth control outputs will be returned to their status when power was removed After power restoration the timer will always return in the stopped condition See section 3 5 10 LOC rSEt Local reset When turned On the timer may be reset from the display mode by simultaneously operating the Up and Down push buttons for at least two seconds See section 3 5 11 CLr Gtot Resetting grand total time This func...

Page 52: ...52 ...

Page 53: ...Threshold 1 2 and 2 1mA COntACt Switch contact Threshold 100 and 1000 OP COL Open collector Threshold 2k and 10k When the required type of input has been selected press E to enter the selection and return to the InPut A or InPut b prompt in the main menu Note To operate reliably the input signal must fall below the lower switching threshold and rise above the upper switching threshold 3 5 4 Start ...

Page 54: ...the direct access menu is On or OFF The Up or Down buttons will toggle the display between the two conditions If OFF is selected the operator will not have access to the setpoint from the display mode Return to the AcSEt t prompt in the main menu by pressing E twice If On is selected the operator will have direct access to the set time setpoint from the display mode via a separate optional securit...

Page 55: ...nd total time may be viewed when the instrument is in the display mode by operating the E and Down push buttons simultaneously The grand total time can only be reset to zero from the CLr Gtot function in the main programme menu To zero the grand total select CLr Gtot and press P which will cause the instrument to display Clr no with no flashing Continuously press the Up or Down push buttons until ...

Page 56: ...on 3 6 5 Fig 3 4 Control output sub menu 3 6 2 Control output enable EnbL This function allows the control output to be enabled or disabled without altering any other parameters To check or change the function select EnbL from the control output sub menu and press P which will reveal the current setting The function can be changed by pressing the Up or Down button followed by the E button to retur...

Page 57: ...unction is used the front panel control output annunciator will start flashing when the programmed switching condition occurs It will continue flashing until the delay time has expired when the control output will close and the annunciator will be continuously activated 3 7 APPLICATIONS The BA364D timer is a versatile instrument which can perform a wide variety of hazardous area timing application...

Page 58: ...eck No display Incorrect wiring Note Terminals 2 4 6 8 are interconnected within the BA364D That there is between 10 and 28V on terminals 1 2 with terminal 1 positive Timing cycle will not start Elapsed or remaining time display not changing Incorrect programming or input wiring Timer is being permanently reset Stop input is activated That instrument has been programmed as a timer for the transduc...

Page 59: ...f the failure Symptom Cause Check No display No power supply That there is between 10 and 28V on terminals 1 2 Timing cycle will not start Transducer or associated wiring has been damaged Timer is being permanently reset Stop input is activated Set time has expired but timer has not been reset Presence of signal at input terminals That reset terminals 7 8 are not connected together Input at termin...

Page 60: ...otal 3 3 3 3 4 3 Function of instrument 3 5 2 Grand total 3 1 Resetting 3 5 12 Guarantee 1 7 2 Galvanic isolator use with 3 4 Input 3 5 3 Installation 1 5 Location 1 5 1 Loss of power 3 5 10 Maintenance 3 8 Routine 1 7 1 Power supply 3 3 1 3 4 1 Subject Section Reset Grand total 3 5 12 Timer 3 3 3 3 4 3 3 5 11 Security Code 3 5 13 Override link 1 6 1 Servicing 1 7 Timer Direction 3 5 8 Resetting 3...

Page 61: ...imal point 4 5 5 Lower display 4 5 6 Rotational scale factor 4 5 7 Timebase 4 5 8 Display filter 4 5 9 Clip off 4 5 10 Local reset of run time display 4 5 11 Resetting run time grand total 4 5 12 Security code 4 6 Optional Alarms 4 6 1 Programming and adjustment 4 6 2 Alarm enable 4 6 3 Type of alarm 4 6 4 Setpoint adjustment 4 6 5 Alarm function 4 6 6 Alarm output status 4 6 7 Hysteresis 4 6 8 Al...

Page 62: ...taneously for more than two seconds Selectable function from programme menu See section 4 5 10 P Down While these buttons are pushed the instrument will display the firmware and version numbers plus the programmed function Note When optional alarms are fitted the BA364D may be programmed to provide direct access to the alarm setpoints from the display mode by operating the P Up push buttons See se...

Page 63: ... a tachometer only input A is operational This input may be programmed to operate with almost any pulse output transducer The following table shows the switching thresholds for the various transducers plus the maximum operating frequency and the input terminal numbers For reliable counting the input signal must fall below the lower threshold and rise above the upper threshold Switching thresholds ...

Page 64: ...s designed If the run time display is not used or is reset from the instrument front panel only the power supply galvanic isolator is required Fig 4 2 Basic tachometer circuit using isolators 4 4 1 Power supply The BA364D galvanic isolator system certificate lists a wide range of certified galvanic isolators that may be used to power the instrument If using the entity concept to select an isolator...

Page 65: ... See section 4 6 4 5 PROGRAMMING Throughout this manual push buttons are shown in italics e g P or Up push button and legends displayed by the instrument are shown within inverted commas e g SEt and dISPLAY 4 5 1 Accessing programme functions Access to the programme menu is obtained by operating the P and E push buttons simultaneously If the BA364D is not protected by a security code the first par...

Page 66: ... See section 4 5 6 t bASE Timebase Selectable multiplier to display rotational speed in revolutions per second per minute or per hour Select tb 1 for revs second tb 60 for revs minute tb 3600 for revs hour See section 4 5 7 Display Description of function FILtEr Display filter Adjustable digital filter to reduce noise on the speed display Adjustable between 0 and 99 See section 4 5 8 CLIP OFF Clip...

Page 67: ...67 ...

Page 68: ...ll below the lower switching threshold and rise above the higher switching threshold 4 5 4 Position of the decimal point d P The BA364D speed display has six digits and the decimal point may be positioned between any of them or may be omitted To adjust the position of the decimal point select d P from the main menu and press P This will activate the display with one digit plus the following decima...

Page 69: ... X7 24 X8 32 X9 64 By careful adjustment of the two parameters a stable display with an acceptable step input response can be obtained for most applications During commissioning it is recommend that initially the second digit is set to 0 off and the first digit is adjusted to provide acceptable speed display stability The second digit should then be increased until the selected step size is greate...

Page 70: ...an only be reset to zero from the CLr Gtot function in the main programme menu To zero the grand total select CLr Gtot and press P which will cause the instrument to display Clr no with no flashing Continuously press the Up or Down push buttons until CLr YES is displayed and then press P which will result in a CLr 0000 prompt with one digit flashing Using the Up and Down buttons and the P button t...

Page 71: ...larms operate on the speed or the run time display See section 4 6 3 SPS1 Alarm setpoint 1 or SPh1 Adjusts the alarm setpoint The alarm is activated when the display equals the setpoint See section 4 6 4 HI LO Alarm function Defines whether the alarm has a high or low function See section 4 6 5 no nc Normally open or normally closed output Determines whether the single pole alarm output is open or...

Page 72: ...72 ...

Page 73: ...ly open or normally closed outputs have been selected Therefore an open output should be the alarm condition for fail safe operation To check the alarm output status select no nc from the alarm menu and press P to reveal the current setting The function can be changed by pressing the Up or Down button followed by the E button to return to the alarm menu 4 6 7 Hysteresis HStr Hysteresis is only ava...

Page 74: ...numeric code press E to return to the EnbL prompt followed by the Up or Down button to select the access code prompt AcCd Pressing P will then reveal the current security code with one digit flashing The code may be changed by operating the Up or Down push buttons and pressing the P button to transfer control to the next digit Finally press E twice to enter the new security code and return to the ...

Page 75: ...cted Using the Up or Down push button select the function 4 20 OP and press P which will result in the BA364D displaying 4 000 this is the prompt for setting the speed display corresponding to an output current of 4 000mA Pressing P will reveal the existing setting with the most significant digit flashing The decimal point will be fixed in the position already defined for the speed display by the ...

Page 76: ...scroll through the main menu until InPut is displayed press P to reveal the existing setting Using the Up or Down buttons select COIL the input for a magnetic pick off and then return to the InPut prompt in the main menu by pressing E Step 4 Position of decimal point In this example the BA364D is displaying rotary speed and no display decimal point is required Select d P from the main menu and pre...

Page 77: ... to transfer control between digits enter 5 Finally return to the CLIP OFF prompt in the main menu by pressing E Step 10 Turn local reset on In this example the operator is required to zero the run time display from the instrument front panel The local reset function should therefore be turned on Select LOC rSEt from the main menu and press P which will reveal if it is turned On or OFF Using the U...

Page 78: ...n override position See Fig 1 4 4 9 2 Fault finding after commissioning ENSURE PLANT SAFETY BEFORE STARTING MAINTENANCE Live maintenance is permitted on intrinsically safe equipment installed in a hazardous area but only certified test equipment should be used unless a gas clearance certificate is available If a BA364D tachometer fails after it has been functioning correctly the following table ma...

Page 79: ...ls 4 1 2 Decimal points 4 5 4 Display 4 1 3 Filter 4 5 8 Lower run time 4 5 5 Function of instrument 4 5 2 Guarantee 1 7 2 Galvanic isolator use with 4 4 Input 4 3 2 4 4 2 4 5 3 Installation 1 5 Local run time reset 4 5 10 Location 1 5 1 Maintenance 4 9 Routine 1 7 1 Power supply 4 3 1 4 4 1 Subject Section Rotational scale factor 4 5 6 Run time 4 1 Resetting 4 3 3 4 4 3 4 5 10 Resetting grand tot...

Page 80: ...80 ...

Page 81: ...outputs 5 5 Programming 5 5 1 Accessing programme functions 5 5 2 Instrument function 5 5 3 Display format and units 5 5 4 Set display time 5 5 5 Set reset time 5 5 6 Security code 5 5 7 Control output enable 5 5 8 Setpoint times 5 5 9 Access setpoints 5 5 10 Adjust control output setpoints when displaying time 5 6 Application 5 6 1 Calibration 5 7 Maintenance 5 7 1 Fault finding during commission...

Page 82: ...r supply is interrupted for more than 30ms the display will return to the flashing condition following initialisation 5 1 2 Controls The BA364D clock is controlled and calibrated via four front panel push button switches In the display mode i e when the instrument is displaying time the switch functions are Down While these buttons are pushed the P instrument will display the firmware and version ...

Page 83: ... about 340 When operating as a clock the BA364D consumes approximately 15mA and requires a minimum voltage of 10V between terminals 1 and 2 The supply voltage in the safe area must therefore be between 16V and the maximum working voltage of the Zener barrier usually about 26V 5 3 2 Synchronisation When terminals 7 8 are connected together the time displayed by the BA364D will be set to the preprog...

Page 84: ...lly set to the preprogrammed reset time The clock will be inhibited until terminals 7 8 are disconnected from each other when it will restart from the preprogrammed time To achieve reliable synchronisation terminals 7 8 should be connected together by a pair of contacts which close for at least one second This function enables one or more BA364D clocks to be synchronised with a master clock once e...

Page 85: ...ll the clock programmable parameters including those for the optional control outputs When read in conjunction with Fig 5 3 it provides a quick aid for programming the instrument If more detail is required each section contains a reference to a full description of the function SUMMARY OF PROGRAMME FUNCTIONS Display Description of function Function Function of instrument Enables the BA364D to be co...

Page 86: ... control output 1 turns off for the first time See section 5 5 8 OP1 On2 Setpoint Defines the time at which control output 1 turns on for the second time See section 5 5 8 OP1 OFF2 Setpoint Defines the time at which control output 1 turns off for the second time See section 5 5 8 AcSP Access setpoint Sub menu that enables direct access to the alarm setpoints from the display mode and defines a sep...

Page 87: ...87 ...

Page 88: ...ress P to reveal the existing display with one digit flashing The value of the flashing digit can be changed by pressing the Up or Down buttons When this digit is correct pressing P will transfer control to the next digit When a twelve hour format has been selected in the dISPLAY function the displayed time will be prefixed by an A or a P to denote am or pm This may be changed by pressing P until ...

Page 89: ...Down push buttons The P button transfers control to the next digit When set as required press E to return the sub menu from which another setpoint may be selected Note Seconds are always displayed while the set points are being adjusted 5 5 9 Access Setpoint AcSP This function activates a separate menu that provides direct access to the control output setpoints when the clock is in the display mod...

Page 90: ...display to the setpoint identification from which another setpoint may be selected or the clock may be returned to the display mode by pressing E again Each of the two control outputs has two or four setpoints depending upon whether the output has been programmed to turn on off once or twice in each 24 hour period see 5 5 7 Notes Direct access to the control output setpoints is only available when...

Page 91: ...main menu until dISPLAY is found press P to reveal the existing setting Using the Up or Down buttons select 24 00 which will provide a 24 hour format without seconds Finally return to the main menu by pressing E Step 4 Setting the reset time Using the Up or Down button scroll through the main menu until rSEt t is displayed press P to reveal the existing setting with one digit flashing Using the Up...

Page 92: ... finding after commissioning ENSURE PLANT SAFETY BEFORE STARTING MAINTENANCE Live maintenance is permitted on intrinsically safe equipment installed in a hazardous area but only certified test equipment should be used unless a gas clearance certificate is available If a BA364D clock fails after it has been functioning correctly the following table may help to identify the cause of the failure Symp...

Page 93: ... time 5 5 9 5 5 10 Solid state outputs 1 9 5 1 Display 5 1 3 Format units 5 5 3 Set time 5 5 4 Function of instrument 5 5 2 Guarantee 1 7 2 Galvanic isolator use with 5 4 Installation 1 5 Location 1 5 1 Loss of power 5 1 1 Maintenance 5 7 Routine 1 7 1 Power supply 5 3 1 5 4 1 Programming 5 5 Fig 5 3 Accessing 5 5 1 Security Code 5 5 6 Override link 1 6 1 Servicing 1 7 Synchronisation 5 3 2 5 4 2 ...

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