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Issue: 6

July 2019

BA364NG

Two Input

Ex nA and Ex tc

Counter

Issue 6

Содержание BA364NG

Страница 1: ...Issue 6 9th July 2019 BA364NG Two Input Ex nA and Ex tc Counter Issue 6 ...

Страница 2: ...nce inp type 6 10 Input A pulse counting edge cntedg a 6 11 Input b pulse counting edge cntedg b 6 12 Display update interval update 6 13 Counting function count 6 14 Upper display di5p 1 6 15 Lower display di5p 2 6 16 Position of decimal points dp 6 17 Total scale factor 5cale t 6 18 Rate scale factor 5cale r 6 19 Timebase t ba5e 6 20 Display filter filter 6 21 Direction of count up or dn 6 22 Re...

Страница 3: ...i lo 10 3 8 Alarm output status ni nc 10 3 9 Hysteresis h5tr 10 3 10 Alarm delay dela 10 3 11 Alarm silence time 5il 10 3 12 Flash display when alarm occurs fl5h 10 3 13 Access setpoint ac5p 10 3 14 Adjusting alarm setpoints from display mode 10 4 4 20mA output 10 4 1 Ex nA certification 10 4 2 Configuration and calibration 10 4 3 Access 4 20mA output sub menu 4 20 op 10 4 4 Enable 4 20mA output e...

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Страница 5: ...pplements the abbreviated instruction sheet supplied with each instrument The BA364NG is ATEX Ex nA and Ex tc certified and complies with the European ATEX Directive 2014 34 EU The main sections of this manual describe ATEX gas certification ATEX dust certification of the BA364NG is described in Appendix 1 For international applications the BA364NG also has IECEx certification which is described i...

Страница 6: ...optional pulse output See 6 24 Shows in succession firmware version number instrument function 2ch cntr and any output accessories that are fitted A Dual alarm outputs P Pulse output always fitted C 4 20mA output Access to configuration menu Note When optional alarms are fitted the BA364NG Counter may be configured to provide direct access to the alarm setpoints from the display mode when the and ...

Страница 7: ...n Certificate This allows the Counter to be adjusted and configured live when installed in Zone 2 When connected to a suitable system the BA364NG Counter may be installed in Zone 2 explosive gas air mixture not likely to occur and if it does will only exist for a short time Be used with gases in groups Group A propane Group B ethylene Group C hydrogen In gases that may safely be used with equipmen...

Страница 8: ...eters of each BA364NG input as shown in the following table which also shows the types of sensor requiring energising link fitting Safety parameters Input Output Type of input Link Ui Uo Io Switch contact Yes 15V 10 5V 9 2mA Proximity detector Yes 15V 10 5V 9 2mA Open collector Yes 15V 10 5V 9 2mA Magnetic pick off No 30V 1 1V 0 5mA Voltage input low No 30V 1 1V 0 5mA Voltage input high No 30V 1 1...

Страница 9: ...terminals 2 6 and RS2 are interconnected within the BA364NG See Fig 1 4 1 Power supply The BA364NG Counter requires a minimum of 10V between terminal 1 2 and consumes 10mA without optional backlight plus 6mA when terminals 3 4 are linked plus 6mA when terminals 7 8 are linked plus 16mA with optional backlight A 24V dc regulated current limited supply located in a safe area is suitable The power su...

Страница 10: ...7 and 10 of this manual Fig 3 BA364NG used with Zener barriers Alternatively the pulse sources may be located in the safe area as shown in Fig 4 When designing a system it is important to remember that terminals 2 6 10 and RS2 are interconnected within the BA364NG See Fig 1 Fig 4 BA364NG used with Zener barriers pulse source in safe area 4 2 1 Input switching thresholds For reliable totalisation t...

Страница 11: ...sor and associated wiring should be able to withstand a 500V rms insulation test to earth The BA364NG contains a configurable debounce circuit to prevent false triggering See section 6 6 4 2 6 Voltage pulse input Two voltage pulse input ranges are selectable in the BA364NG Counters configuration menu VoLt5 L and VoLt5 H The Counters input terminals may be connected to any Zone 2 certified voltage ...

Страница 12: ... the back box for interconnecting cable screens The BA364NG Counter may be pipe mounted using a BA393G pipe mounting kit 5 2 Installation Procedure Fig 6 illustrates the instrument installation procedure A Remove the Counter assembly by unscrewing the four captive A screws B Mount the enclosure back box on a flat surface and secure with screws or bolts through the four B holes Alternatively use on...

Страница 13: ...nstrument is ordered a blank scale card will be fitted which can easily be marked on site with a dry transfer or a permanent marker Custom printed scale cards are available from BEKA associates as an accessory To remove the scale card from a Counter carefully pull the transparent tab at the rear of the instrument assembly away from the assembly as shown in Fig 8a Fig 7a Removing scale card To repl...

Страница 14: ...r value clr val 00000000 Local clear loc clr Local total reset Clr tot oFF Local grand total reset Clr Gtot oFF Security code CodE 0000 Note While the instrument is being configured counting continues so that any input pulses occurring during this time are recorded 6 1 Calibration structure Fig 8 shows the calibration structure of the BA364NG Counter The two pulse inputs are processed by the count...

Страница 15: ...ory If after accessing the configuration menu the interval between operating any front panel push button exceeds one minute the BA364NG will automatically return to the display mode and any configuration changes will not be stored in permanent memory When making changes to multiple configuration functions it is therefore sensible to occasionally return to the display mode to save the changes that ...

Страница 16: ...n di5P 2 Lower display Turns the lower display which normally shows rate on or oFF See section 6 15 dP Position of decimal points Defines the position of the decimal point in both the total and rate displays See section 6 16 5CALE t Total Scale Factor 5CALE t is a dividing factor that converts the pulse output from arithmetic Count function into the required total display in engineering units 5CAL...

Страница 17: ...cal total reset When on is selected total display is reset when and buttons are operated simultaneously for more than 3 seconds in the display mode See section 6 24 Clr Gtot Local grand total reset When on is selected the grand total may be reset when and buttons are operated simultaneously for more than 10 seconds in the display mode see section 2 2 for details Note Once reset the grand total can...

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Страница 20: ... resulting from a mechanical contact closing and bouncing The debounce function only applies to the input in which the function is located Three levels of protection may be independently selected for each input The amount of debounce applied depends upon the type of Counter input that has been selected for the input in the associated inP tYPE function Select inPut A in the configuration menu and p...

Страница 21: ...unt occurs to be selected It applies to input A for all counting modes except quadrature A rEL b To check or change the input A pulse edge on which the count occurs select CntEdG A from the configuration menu and press which will reveal EdGE 1 or EdGE 2 If required press the or button to change the setting followed by the button to return to the configuration menu EdGE 1 Type of input Counting edg...

Страница 22: ...ionship between Inputs A and Input b The following four modes may be selected Display Input count mode A b Pulses at input A added to pulses at input b A b Pulses at input b subtracted from pulses at input A 1 A Con b Input b controls count direction of input A 1 Input b Input A Low Up counter High Down counter A rEL b Quadrature input with sensors electrically 90o apart Note 1 The pulse output is...

Страница 23: ...ional Alarm outputs Optional 4 20mA output 6 17 Total scale factor 5CALE t 5CALE t is a dividing factor adjustable between 0 0001 and 99999 that enables the total to be displayed in engineering units e g if one pulse from the arithmetic count function represents 1 centimetre of dispensed cable and the total display is required in metres 5CALE t should be set to 100 0 which is the number of centime...

Страница 24: ...defines the amount of filtering applied to the display as shown below First digit Filter time constant Seconds 0X 0 1X 1 3 2X 4 3 3X 6 5 4X 8 7 5X 11 3 6X 15 7 7X 20 9 8X 25 2 9X 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...

Страница 25: ... and push buttons simultaneously for more than three seconds To check or change the setting select LoC CLr in the configuration menu and press which will reveal the Clr tot prompt operating again will show if the local total reset is on or oFF If set as required operate the button twice to return to the configuration menu or the or button to change the setting followed by the button twice to enter...

Страница 26: ...is lost 6 28 Reset configuration to factory defaults r5Et dEF This function returns the BA364NG Counter to the factory defaults shown in section 6 0 To prevent accidental use the request must be confirmed by entering 5urE before the configuration change will be executed Select r5Et dEF from the configuration menu and press the instrument will display 0000 with the first digit flashing To confirm t...

Страница 27: ... EN 60079 14 Electrical installations design selection and erection each of the wires entering the hazardous area should be individually fused and contain a means of isolation These two requirements may be satisfied by installing DIN rail mounted terminals incorporating a fuse which can easily be removed as shown in Fig 2 to provide isolation Clear identification of and easy access to the means of...

Страница 28: ... output EnbL This function allows the pulse output to be disabled or enabled without altering any of the pulse output parameters Using the or push button select EnbL in the pulse output sub menu and press to reveal the existing setting on or oFF The function can be changed by pressing the or push button followed by the button to return to EnbL prompt 7 6 Source of output pulse 5ourCE The output pu...

Страница 29: ... 5 5 10 25 50 100 250 500 Using the or push button select durAtion in the pulse output sub menu and press to reveal the existing pulse duration The value can be changed by pressing the or push button to select the required value followed by the button to return to durAtion prompt Note This function only appears in the pulse output sub menu when the output pulse is derived from the total display 29...

Страница 30: ...ut for a 2 wire proximity detector and then return to the inPut A prompt in the configuration menu by pressing Repeat for the second input inPut b Step 3 Select input count mode The two proximity detectors are positioned so their outputs are electrically 90 apart From this information in the quadrature input mode the BA364NG Counter can sense the direction and angular movement of the wheel to whic...

Страница 31: ...utton scroll through the three options and select tb 01 Return to the t bA5E prompt in the configuration menu by pressing Step 10 Adjust the rate display filter The rate display filter parameters should be adjusted experimentally after installation to provide a stable rate display with an acceptable step response During commissioning it is recommended that initially the second digit of the rate pa...

Страница 32: ...ly the same way before returning to the configuration menu by pressing the button twice Step 13 Define the security code Defining an access security code prevents unauthorised access to the configuration menu Select CodE in the configuration menu and press which will reveal the existing security code with the first digit flashing Using the and buttons enter the new code 1209 digit by digit The but...

Страница 33: ...KA if code is lost Alarms do not function Alarms have been disabled following calibration change Re enable both alarms 9 2 Fault finding after commissioning EN 60079 17 Electrical installations inspection and maintenance permits live maintenance in Zone 2 if a risk analysis demonstrates that this does not introduce an unacceptable risk The removal of covers opening of Ex n instrument enclosure is ...

Страница 34: ...s or our local agent It is helpful if a brief description of the fault symptoms is provided 9 6 Customer comments BEKA associates is always pleased to receive comments from customers about our products and services All communications are acknowledged and whenever possible suggestions are implemented 34 ...

Страница 35: ...als 7 8 linked 6mA Total current 38mA max 10 3 Alarms The BA364NG Counter can be supplied with factory fitted dual alarms Each may be independently configured as a rate display or total display high or low alarm with a normally open or a normally closed solid state output Configurable functions for each alarm include adjustable setpoint alarm delay time and alarm silence time Hysteresis may be app...

Страница 36: ... does not occur It is not considered necessary to have a means of isolation or electrical protection for the screen Fig 2 illustrates an example of this type of fused terminal block For some applications Ex nA instrumentation energised by a current limited power supply or instrument that can be switched off is often considered adequate and to comply with the requirements of the standard 10 3 3 Sum...

Страница 37: ...e Defines the time that the alarm output remains in the non alarm condition following acceptance of an alarm See section 10 3 11 FL5H Flash display when alarm occurs When enabled alternates the rate or total display between process value and alarm reference AL1 or AL2 when an alarm output is activated See section 10 3 12 AC5P Access setpoint Sub menu that enables direct access to the alarm setpoin...

Страница 38: ...arm sub menu 10 3 5 Type of alarm tYPE Alarm 1 and Alarm 2 are totally independent both may be rate or total alarms or one may be conditioned for rate and the other for total Using the or push button select tYPE from the selected alarm sub menu and press to check or change the function The or push button will toggle the selection between rAtE and totAL when set as required press the button to retu...

Страница 39: ...ich will reveal the existing hysteresis with one digit flashing The required hysteresis can be entered using the or push button to adjust the flashing digit and the button to transfer control to the next digit When set as required press to enter the value and return to the H5tr prompt in the alarm sub menu e g A BA364NG Counter configured to display a rate of 0 to 5000 with a high alarm set at 400...

Страница 40: ... from the sub menu and press which will cause the BA364NG Counter to display 0000 with one digit flashing The flashing digit may be adjusted using the or push button when set as required operating the button will transfer control to the next digit When all the digits have been adjusted press to return to the ACCd prompt The revised security code will be activated when the BA364NG Counter is return...

Страница 41: ...o move control to the next digit When the required setpoint has been entered pressing will return the display to the 5P1x or 5P2x prompt from which the other setpoint may be selected or the instrument may be returned to the display mode by pressing again Note Direct access to the alarm setpoints from the display mode is only available when the AC5P menu is enabled see section 10 3 13 41 ...

Страница 42: ...us area should be individually fused and contain a means of isolation These two requirements may be satisfied by installing DIN rail mounted terminals incorporating a fuse which can easily be opened as shown in Fig 2 to provide isolation Clear identification of and easy access to the means of isolation is essential for their effective use It is also necessary to ensure that the maintenance procedu...

Страница 43: ...the output will be a constant 3 5mA irrespective of the instrument display The 4 20mA output must always be re enabled and reconfigured following the controlling source being changed 10 4 6 Display which corresponds to 4mA output 4 000 The BA364NG Counter display which corresponds to a 4 000mA output current is defined by this function Using the or push button select 4 000 in the 4 20mA output sub...

Страница 44: ...by the certificate number s X suffix These state that the BA364NG Counter should be a Supplied from a limited energy circuit with output parameters in normal operation equal to or less than the instrument s input parameters The certificate states that It is not necessary to power the instrument from an intrinsically safe interface such as a certified shunt diode safety barrier or a galvanic isolat...

Страница 45: ...tical to the ATEX safety parameters described in the main section and Appendix 1 of this manual The IECEx certificate may be downloaded from the BEKA associates or the IECEx website or may be requested from the BEKA sales office A2 2 Installation The IECEx and ATEX certificates specify identical safety parameters and installation requirements for both gas and dust approvals as defined by IEC 60079...

Страница 46: ...one 22 AEx ic tc IIIC T80ºC Dc Ta 40 C to 60 C cETL codes for installation in Canada Ex nA ic IIC T5 Gc Ex n IIC T5 Gc Ex ic tc IIIC T80ºC Dc Class III Div 2 Class II Div 2 Gp F G Ta 40 C to 60 C The ETL and cETL safety parameters are the same as the ATEX and IECEx parameters therefore the systems shown in the main section of this manual and in Appendix 1 may be used for US and Canadian installati...

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