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10.4.10  Alarm delay:   dELA

This function enables activation of the alarm output to
be delayed for a fixed time following the alarm
condition occurring.  The delay can be set in 1
second increments up to 3600 seconds.  If a delay is
not required zero should be entered.  To adjust the
delay select 'dELA' using the 

 or 

 button from the

alarm menu and press 

P

 which will reveal the existing

delay with one digit flashing.  The flashing digit can
be adjusted using the 

 or 

 push button, and the 

P

button to move control to the next digit.  When the
required delay has been entered, press 

E

 

to enter the

new setting and return to the ‘dELA’ prompt in the
alarm menu.
When an alarm occurs, the alarm annunciator will
flash until the delay time expires, when the alarm will
be activated and the annunciator will stop flashing.

10.4.11  Alarm silence time:   SiL

This function is primarily intended for use in small
installations where the alarm output directly operates
a warning sounder or beacon.  When the alarm
silence time is set to any figure other than zero, the 

P

push button becomes an alarm accept button.   After
an alarm has occurred, operating the 

P

 button will

cause the alarm output to revert to the non-alarm
condition for the programmed alarm silence time.
Ideally the BA474D requires an optional external
keypad for this function to be used.

To adjust the alarm silence time, which may be
between 0 and 3600 seconds, select 'SiL' from the
alarm menu using the 

 or 

 push button and press

P

  to reveal the existing silence time with one digit

flashing.  The flashing digit can be adjusted using the

 or 

 push button and the 

P

 button to move control

to the next digit.  When the required time has been
entered press 

E

 

to return to the ‘SiL prompt in the

alarm menu.
When an alarm is cleared using the 

P

 push button,

the alarm annunciator will flash until the silence time
expires, if the alarm condition still exists the alarm will
be reactivated.

10.4.12  Access Setpoint:  ACSP

This function controls a separate menu that provides
direct access to the alarm setpoints when the
BA474D transmitter is in the operational mode.  The
function enables an operator to adjust the alarm
setpoints without having access to the configuration
and alarm menus.  Further protection is provided by a
separate security code.   Both setpoints can always
be displayed, but not adjusted, from the operating
mode using the 

plus the 

 or 

 button – see

section 3.1

This direct access menu is enabled and a separate
security code entered from the 'ACSP' function in the
configuration menu as shown in Fig 14.   To check or
change the menu parameters select 'ACSP' from the
menu using the 

 or 

 button and press 

P

 which will

display the enable prompt 'EnbL'.  Press 

P

 again to

reveal the current setting which may be changed
using the 

 or 

 button.

If 'oFF' is selected, the operator will not have access
to the setpoints from the display mode.  If 'on' is
selected, the operator will have direct access to the
alarm setpoints from the operational mode via a
separate optional security code.   Press 

E

 to enter

the selection and return to the ‘EnbL’ prompt,
pressing 

E

 again will return the ‘ACSP’ prompt in the

configuration menu.

If the ‘ACSP’ function is enabled, access to the
setpoints from the transmitter operational mode may
be protected by an optional four digit code.   This
access code is defined by sub-function ‘ACCd’ which
is reached  from the 'EnbL' prompt by pressing the 

or 

 button.   Pressing 

P

 

will then reveal the current

security code with one digit flashing.  The flashing
digit may be changed by operating the 

 or 

 push

button and the 

P

 button to move control to the next

digit.  When the required code has been entered,
press 

E

 twice to return to the 'ACSP' prompt in the

configuration menu.

Code 0000 disables this security code allowing, when
enabled, direct access to the setpoints from the
display mode by pressing the

 

P

 and 

 buttons

simultaneously.

New instruments with alarms are supplied with this
function disabled and the security code set to 0000

Содержание BA474D

Страница 1: ...Supplied by Call us on 44 0 118 916 9420 Email info 247able com com Installation Maintenance Instructions BA474D...

Страница 2: ...Danehill Lower Earley Reading Berkshire RG6 4UT UK Tel 44 0 118 9311188 Email info able co uk Aberdeen Office Unit 6 Airside Business Park Kirkhill Industrial Estate Dyce Aberdeen AB21 0GT UK Tel 44 0...

Страница 3: ...Issue 8 4 th March 2014 BA474D Intrinsically safe field mounting indicating temperature transmitter Issue 8...

Страница 4: ...play bAr 7 2 9 Access code CodE 7 2 10 Resistance thermometer type r tYPE 7 2 11 Decimal point position dP 7 2 12 Lower input display in Lo 7 2 13 Higher input display in Hi 7 3 Default configuration...

Страница 5: ...ned in Appendices to this manual The transmitter is HART Registered and is compliant with HART protocol standard revision 7 HART commissioning information is included in the BA47X 67X Indicating Tempe...

Страница 6: ...endix 1 which describes ATEX installations complying with EN 61241 14 Dust certification is an option that must be specified when the transmitter is ordered 4 2 Zones gas groups and T rating The BA474...

Страница 7: ...6 The BA474D Indicating Temperature Transmitter is loop powered via these terminals which have the following input safety parameters Ui 28V Ii 200mA Pi 0 85W When installed in a hazardous area the tr...

Страница 8: ...perate multiple loops the negative side of the supply is normally earthed To also allow the negative side of the 4 20mA load to be earthed it is necessary to have a Zener barrier in each of the two wi...

Страница 9: ...e it must be transparent to HART signals 5 2 Use as associated apparatus WARNING When used as associated apparatus without Zener barriers or galvanic isolators the BA474D transmitter must be installed...

Страница 10: ...zardous area the same Zener barriers or galvanic isolators required for transmitter operation are required When installed in a safe area as associated apparatus the supply terminals 5 6 may be directl...

Страница 11: ...n the three conduit cable entries The BA474D liquid crystal display has maximum contrast when viewed from directly ahead and slightly below the centre line of the instrument Without a backlight there...

Страница 12: ...eparates the intrinsically safe and non intrinsically safe terminals within the enclosure Conductors of intrinsically safe circuits and non intrinsically safe circuits should not be contained in the s...

Страница 13: ...protected by an access code the first parameter InPut will be displayed If the transmitter is protected by an access code CodE will be displayed first Pressing P will allow the four digit security co...

Страница 14: ...or high display resolution See section 7 2 4 Transmitter Summary display of function FAuLt Sensor fault analogue indication Selects 1 of 3 under over range output currents to indicate that a sensor fa...

Страница 15: ...rmocouple has been selected press E to enter the selection and return to the t tYPE prompt in the configuration menu 7 2 3 Units of digital display dEG The transmitter digital display may be in one of...

Страница 16: ...ss P which will display the ZEro function in the sub menu pressing P again will reveal the existing transmitter input at which the transmitter output current is 4mA Input is shown in units which depen...

Страница 17: ...P button again will return control to one of the digits 7 2 9 Access code for configuration menu CodE Access to the configuration menu may be protected by a four digit security code which must be ent...

Страница 18: ...oned using either the or button Pressing the P button again will return control to one of the digits 7 2 13 Higher input display in Hi This function which only appears in the menu when the transmitter...

Страница 19: ...17...

Страница 20: ...18...

Страница 21: ...19...

Страница 22: ...on site Function Factory default Transmitter input InPut 3 wire RTD Sensor type t tYPE Pt100 Units of digital display dEG C Display resolution rESn Low Sensor fault FAuLt Off 4 20mA output CAL 0 0 to...

Страница 23: ...configuration menu and press P to enter the function which enables the type of resistance thermometer to be selected The transmitter will display the existing type of resistance thermometer using the...

Страница 24: ...ArLo sub function may be selected Press P to enter the bArLo sub function which will reveal the existing digital display at which the bargraph starts Set the display to 0100 0 using the or button to a...

Страница 25: ...een activated Sensor and input wiring 9 2 Fault finding after commissioning ENSURE PLANT SAFETY BEFORE STARTING MAINTENANCE Use as an intrinsically safe transmitter Live maintenance is permitted on in...

Страница 26: ...a scale for the horizontal bargraph Alternatively information may be added on site via an embossed strip dry transfer or a permanent marker To gain access to the display escutcheon remove the terminal...

Страница 27: ...r than 180k Note Because of the series protection diodes some test meters may not detect a closed alarm output Fig 12 Equivalent circuit of each alarm output WARNING Connection of alarm output to a su...

Страница 28: ...ions Display Description of function ALr1 Alarm 1 ALr2 Alarm 2 The two functions each contain seven identical sub functions one set for configuration alarm 1 and the other for configuration alarm 2 Se...

Страница 29: ...27...

Страница 30: ...o reveal the current setting The function may be changed by pressing the or button pressing the E button will enter the setting and return the display to the Hi Lo prompt in the alarm menu 10 4 8 Alar...

Страница 31: ...xists the alarm will be reactivated 10 4 12 Access Setpoint ACSP This function controls a separate menu that provides direct access to the alarm setpoints when the BA474D transmitter is in the operati...

Страница 32: ...to be displayed Pressing the or button will toggle between the two alarm setpoint prompts SP1 and SP2 If an incorrect security code is entered or a button is not pressed within ten seconds the transm...

Страница 33: ...tmosphere 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 li...

Страница 34: ...o the ATEX parameters and the systems shown in section 5 of this manual may therefore also be used for FM and cFM installations The BA474D Indicating Temperature Transmitter also has FM and cFM Associ...

Страница 35: ...33...

Страница 36: ...34...

Страница 37: ...35...

Страница 38: ...36...

Страница 39: ...37...

Страница 40: ...38...

Страница 41: ...39...

Страница 42: ...kely to occur in normal operation 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 Gro...

Страница 43: ...ystem the BA474D may be installed in Zone 20 explosive atmosphere in the form of a cloud of combustible dust in air is continuously present or for long periods or frequently Zone 21 explosive atmosphe...

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