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9.3.3  Configuration and adjustment

When  a  BA314G  is  supplied  with  alarms  the
configuration menu is extended as shown in  Fig 15
which for simplicity only shows alarm AL1 configured
to operate as a speed alarm.  The run-time options
are  identical  except  that  a  run-time  alarm  can  not
have hysteresis.   Alarm AL2 functions are identical to
alarm AL1.

The   following   table   summarises   each   of   the   alarm
configuration  functions  and  includes  a  cross
references to more detailed information.   Again only
the functions on alarm AL1 are listed.

    Display       Summary of function                           

EnbL

Alarm enable

Enables  or  disables  the  alarm  without
changing the alarm parameters.
See section  9.3.4

tYPE

Type of alarm

Defines whether the alarm operates on the
speed or run-time display. 
See section 9.3.5

5P1.5peed

Alarm setpoint 1

   or

Adjusts the alarm setpoint.  The

5P1.Hour5s

alarm is activated when the speed or

run-time display equals the setpoint.

Note:

 

5P15

 is displayed for a speed alarm

and 

5P1H

 for a run-time alarm.

See section 9.3.6

HI

 

.

 

LO

Alarm function

Defines whether the alarm has a high or
low function.
See section 9.3.7

    Display       Summary of function                        

no

 

.

 

nc

Normally  open  or  normally  closed
output.

Determines  whether  the  single  pole
alarm  output  is  open  or  closed  in  the
non-alarm condition.

See section 9.3.8

H5tr

Hysteresis

Adjusts  the  alarm  hysteresis.    Only
available on a speed alarm.
See section 9.3.9

dELA

Alarm delay

 

time

Adjusts  the  delay  between  the  display
equalling  the  setpoint  and  the  alarm
output being activated. 
See section 9.3.10

5IL

Alarm silence time

Defines  the  time  that  the  alarm  output
remains  in  the  non-alarm  condition
following acceptance of an alarm.
See section 9.3.11

FL5H

Flash display when alarm occurs

When enabled, alternates the speed or
run-time display between the value and
alarm  reference  

Al1

 or  

Al2

 when  an

alarm output is activated.
See section 9.3.12

AC5P

Access setpoint

Sub-menu that enables direct access to
the  alarm  setpoints  from  the  display
mode  and  defines  a  separate  security
code.
See section  9.3.13

35

Summary of Contents for BA314E

Page 1: ...Issue 1 7th February 2017 BA314G and BA314E Intrinsically safe Tachometers Issue 1...

Page 2: ...ns 6 3 Summary of configuration functions 6 4 Input inPut 6 5 Input type inP tYPE 6 6 Debounce dEbouncE 6 7 Display update interval uPdAtE 6 8 Run time display di5P 2 6 9 Position of the decimal point...

Page 3: ...time 5IL 9 3 12 Flash display when alarm occurs FL5H 9 3 13 Access Setpoint AC5P 9 3 14 Adjusting alarm setpoints from the display mode 9 4 4 20mA output 9 4 1 Intrinsic safety 9 4 2 System design 9...

Page 4: ...4...

Page 5: ...A314E only has ATEX gas certification The main sections of this manual describe ATEX gas certification For international applications the BA314G and BA314E also have IECEx certification which is descr...

Page 6: ...fitted A Dual alarm outputs P Pulse output Fitted to all BA314G C 4 20mA output Access to configuration menu Note When optional alarms are fitted the Tachometer may be configured to provide direct acc...

Page 7: ...rt time Be used with gases in groups Group A propane Group B ethylene Group C hydrogen In gases that may be used with equipment having a temperature classification of T1 450 C T2 300 C T3 200 C T4 135...

Page 8: ...Po 0 84W or complies with requirements for simple apparatus b The Sensor and associated wiring can withstand a 500V rms insulation test to earth c The Sensor is located in the same hazardous area as t...

Page 9: ...enclosure It shows the ATEX IECEx and ETL certification information plus BEKA associates name location year of manufacture and the instrument serial number Other certification information may also be...

Page 10: ...barrier the supply voltage in the safe area must be between 15 5V and the maximum working voltage of the Zener barrier which depending upon manufacturer will be approximately 26V Note The optional fac...

Page 11: ...4 1 6 Magnetic pick off input Sensors incorporating a magnetic pick off to sense movement will have a low level voltage output unless the sensor incorporates an amplifier CoiL in the BA314G input conf...

Page 12: ...usly for more than two seconds in the totalising mode i e when the instrument is displaying flow See section 6 15 4 2 Use with Galvanic Isolators Galvanic isolators are probably the simplest intrinsic...

Page 13: ...ector 2k 10k Voltage pulse low 1 0V 3 0V Voltage pulse high 3 0V 10 0V Magnetic pick off 0mV 40mV peak Proximity detector 1 2mA 2 1mA Switch 100 1000 Switch contacts proximity detectors and open colle...

Page 14: ...ge pulse input ranges are independently selectable in the BA314G Tachometer configuration menu VoLt5 L and VoLt5 H When configured for either of the voltage pulse ranges and terminals 3 4 are not link...

Page 15: ...tor An insulated M4 stud is provided in the bottom right hand corner the back box for interconnecting cable screens The BA314G Tachometer may be pipe mounted using a BA393G pipe mounting kit or panel...

Page 16: ...instrument 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...

Page 17: ...tor that determines whether the Tachometer displays speed per second per minute or per hour The Tachometer incorporates a run time counter that displays the time in hours that the speed of the monitor...

Page 18: ...on or oFF See section 6 8 Display Summary of function dP Decimal points Defines the position of the decimal point in the Tachometer speed display See section 6 9 5CALE 5 Speed scale factor 5CALE 5 is...

Page 19: ...6 Display Summary of function CLr Gtot Resets grand total run time to zero This function resets the grand total run time to zero from within the configuration menu when CLr YE5 is selected and 5urE is...

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Page 22: ...Tachometer miscounting when the input pulse has noisy edges such as those resulting from a mechanical contact closing and bouncing Three levels of protection may be selected and the amount of debounc...

Page 23: ...g shaft generates 18 pulses per revolution to produce a Tachometer speed display in revolutions 5CALE 5 should be set to 18 0 The units of the Tachometer speed display are pulses per unit of time The...

Page 24: ...d it is not necessary to enter a clip off value see 6 8 To check or change the clip off threshold select CLP oFF from the configuration menu and press which will reveal the current setting The thresho...

Page 25: ...isplayed and then press which will result in a 0000 prompt being displayed with the first digit flashing This is a request for the instruction to be confirmed by entering 5urE using the or button to a...

Page 26: ...g 11 shows how a 2 channel Zener barrier may be used to produce a voltage pulse in the safe area that could be used to drive a safe area tachometer The positive terminal of the pulse output circuit P1...

Page 27: ...e output pulse with defined duration by the diVidE and durAtion functions Using the or push button select 5ourCE in the pulse output sub menu and press to reveal the existing pulse source The source c...

Page 28: ...ng 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 5CALEd is selected in the 5ourC...

Page 29: ...between display updates Using the or button select uPdAtE in the configuration menu and press to reveal how frequently the Tachometer display is updated Using the or push button select 0 5 0 5 second...

Page 30: ...h buttons The button will transfer control to the second digit which controls the step response and should be set to 0 in the same way Finally enter the selection and return to the FiLtEr prompt in th...

Page 31: ...ts unauthorised access to the configuration menu Using the or button select CodE from the configuration menu and press which will reveal 0000 with the first digit flashing This example requires the se...

Page 32: ...tion change Re enable both alarms See 9 3 4 8 2 Fault finding after commissioning ENSURE PLANT SAFETY BEFORE STARTING MAINTENANCE Live maintenance is permitted on intrinsically safe equipment installe...

Page 33: ...an be supplied with factory fitted dual isolated solid state single pole alarm outputs that may be independently configured Each may be configured as a speed or run time alarm with a high or low funct...

Page 34: ...r barrier or galvanic isolator providing the output parameters of the circuit do not exceed Uo 28V dc Io 200mA Po 0 84W The maximum equivalent capacitance and inductance between each set of alarm term...

Page 35: ...nt Note 5P15 is displayed for a speed alarm and 5P1H for a run time alarm See section 9 3 6 HI LO Alarm function Defines whether the alarm has a high or low function See section 9 3 7 Display Summary...

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Page 37: ...turn to the Hi Lo prompt in the alarm sub menu 9 3 8 Alarm output status no nC Each single pole alarm output may be open or closed in the non alarm condition When the BA314G or BA318E power supply is...

Page 38: ...ts without having access to the configuration and alarm sub menus Protection against unauthorised or accidental adjustment is provided by a separate security access code Using the or push button selec...

Page 39: ...the or push button and the button to transfer 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 se...

Page 40: ...e not powered but it is totally isolated from all other Tachometer circuits It is effectively a 2 wire 4 20mA transmitter requiring a minimum supply of 5V with its current being controlled by the Tac...

Page 41: ...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 4 000 prompt in the 4 20mA output sub menu 9 4 7 Display...

Page 42: ...ersist for a short period Be used with dust in subdivisions IIIA combustible flyings IIIB non conductive dust IIIC conductive dust Having a Minimum Ignition Temperature of Dust cloud 120 C Dust layer...

Page 43: ...tification codes Ex ia IIC T5 Ga Ta 40 C to 70 C Ex ia IIIC T80 C IP66 Da Ta 40 C to 60 C The specified IECEx gas and dust intrinsic safety parameters are identical to the ATEX safety parameters descr...

Page 44: ...parameters the systems shown in sections 3 and 4 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 intrin...

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Page 57: ...he 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 enclosure is fitted with a bonding pla...

Page 58: ...d one or both of the IP66 stopping plugs may be replaced with an appropriate IP rated cable gland or conduit fitting d Connect the field wiring to the terminals as shown in Fig A4 2 7 Replace the inst...

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