BEKA BA367E-SS User manual

Issue: 6
9th July 2019
BA367E-SS
Rugged one input
Intrinsically safe
Counter
Issue 6

1. Description
2. Operation
2.1 Initialisation
2.2 Controls
2.3 Displays
3. Intrinsic Safety Certification
3.1 ATEX gas certification
3.2 Zones, gas groups & T rating
3.3 Special conditions for safe use
3.4 Power supply
3.5 Pulse input terminals
3.5.1 sensors that do not require
energising.
3.5.2 sensors that do require energising.
3.6 Remote reset terminals
3.7 Certification label information
4.System Design for Hazardous Areas
4.1 Use with Zener barriers
4.1.1 Power supply
4,1,2 Pulse input
4.1.3 Switch contact input
4.1.4 2-wire proximity detector input
4.1.5 Open collector input
4.1.6 Magnetic pick-off input
4.1.7 Voltage pulse input
4.1.8 Remote reset
4.2 Use with galvanic isolators
4.2.1 Power supply
4.2.2 Pulse input
4.2.3 Switch contact input
4.2.4 2-wire proximity detector input
4.2.5 Open collector input
4.2.6 Magnetic pick-off input
4.2.7 Voltage pulse input
4.2.8 Remote reset
4.3 Use in Ex e or Ex p panel enclosure
located in Zones 1 or 2.
4.3.1 Installation in Ex e panel enclosure
4.3.2 Installation in Ex p panel enclosure
5. Installation
5.1 Location
5.2 Installation procedure
5.3 EMC
5.4 Counter earthing
5.5 Scale card
6. Configuration and Calibration
6.1 Configuration structure
6.2 Accessing the configuration functions
6.3 Summary of configuration functions
6.4 Input: inPut
6.5 Input type: inP.tYPE
6.6 Input debounce: dEbouncE
6.7 Input pulse counting edge: Cnt EdgE
6.8 Display update interval: uPdAtE
6.9 Upper display: di5P-1
6.10 Lower display: di5P-2
6.11 Position of the decimal points: dP
6.12 Total scale factor: 5CALE .t
6.13 Rate scale factor: 5CALE .r
6.14 Timebase: t-bA5E
6.15 Display filter: FiLtEr
6.16 Direction of count: uP or dn
6.17 Reset value: CLr VAL
6.18 Local reset: LoC CLr
6.19 Local total reset: Clr tot
6.20 Local grand total reset: Clr Gtot
6.21 Reset grand total from configuration
menu: Clr Gtot
6.22 Security code: CodE
6.23 Reset configuration to factory defaults:
r5Et dEF
6.24 Display overflow
7. Configuration example
8. Maintenance
8.1 Fault finding during commissioning
8.2 Fault finding after commissioning
8.3 Servicing
8.4 Routine maintenance
8.5 Guarantee
8.6 Customer comments
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CONTENTS
The BA367E-SS is CE marked to show compliance with the European Explosive Atmospheres Directive
2014/34/EU and the European EMC Directive 2014/30/EU

9. Accessories
9.1 Scale card
9.2 Tag information
9.3 Alarms
9.3.1 Solid state output
9.3.2 Intrinsic safety
9.3.3 Configuration summary
9.3.4 Alarm enable: EnbL
9.3.5 Type of alarm: tYPE
9.3.6 Setpoint adjustment:
5P1x & 5P2x
9.3.7 Alarm function: Hi.Lo
9.3.8 Alarm output status: no .nC
9.3.9 Hysteresis: H5tr
9.3.10 Alarm delay: dELA
9.3.11 Alarm silence time: 5IL
9.3.12 Flash display when alarm occurs:
FL5H
9.3.13 Access Setpoint: AC5P
9.3.14 Adjusting alarm setpoints from
display mode.
9.4 Pulse Output
9.4.1 Intrinsic safety
9.4.2 System design
9.4.3 Configuration
9.4.4 Access Pulse output sub-menu:
PuL5E oP
9.4.5 Enable pulse output: EnbL
9.4.6 Source of pulse output: 5ourCE
9.4.7 Divide output pulse frequency:
diVidE
9.4.8 Output pulse width: durAtion
9.5 4/20mA output
9.5.1 Intrinsic safety
9.5.2 System design
9.5.3 Configuration
9.5.4 Access 4/20mA output
sub-menu: 4-20 oP
9.5.5 Enable 4/20mA output: EnbL
9.5.6 Select rate or total source:
4-20tYPE
9.5.7 Display corresponding to
4mA output: 4.000
9.5.8 Display corresponding to
20mA output: 20 .000
9.6 Display backlight
Appendix 1 Dust certification
Appendix 2 IECEx certification
Appendix 3 ETL and cETL certification
3
CONTENTS CONTINUED

4

1. DESCRIPTION
This rugged intrinsically safe, one input Counter may
be configured to count input pulses from a wide
variety of sensors and to display the total number in
engineering units. A smaller five digit display may be
activated to show the input pulse rate in engineering
units per second, minute or per hour.
This instruction manual supplements the abbreviated
instruction sheet supplied with each instrument.
The BA367E-SS has been certified intrinsically safe
for use in gas and dust hazardous areas by Notified
Body Intertek Testing and Certification Ltd and
complies with the European ATEX Directive 2014/34/
EU. It has a rugged stainless steel enclosure and an
impact resistant glass window. In addition to normal
intrinsically safe applications, the certification allows
it to be installed in an Ex e, Ex n, Ex p or Ex t panel
enclosure without invalidating the enclosure's
certification.
For international applications the BA367E-SS also
has IECEx certification which is described in
Appendix 2.
For US and Canadian applications the BA367E-SS
has ETL and cETL, see Appendix 3.
2. OPERATION
Fig 1 shows a simplified block diagram of the
BA367E-SS Counter. The instrument can be
supplied with a factory fitted internally powered
display backlight, plus one of the following three
factory fitted accessories:
Dual isolated alarms
or Isolated pulse output
or Isolated 4/20mA output
Fig 1 BA367E-SS block diagram
5

2.1 Initialisation
Each time power is applied to a BA367E-SS Counter
initialisation is performed. After a short delay the
following display sequence occurs:
All segments of the display are activated
Counter starts functioning, using the
configuration information stored in the
instrument’s permanent memory. Unless
total and grand total displays have been reset
to zero, new pulses will be added to the
existing totals.
2.2 Controls
The BA367E-SS Counter is controlled and
configured via four front panel push buttons. In the
display mode i.e. when the instrument is counting,
the push button functions are:
Push Button Functions
( + )Access to configuration menu
& + *If Local Total Reset CLr tot in the
instrument configuration menu has
been activated, operating the & and
*buttons simultaneously for three
seconds will reset the total display to
zero and clear any pulses stored in the
optional pulse output.
See 6.19
) + &Grand total - shows Lo followed by least
significant 8 digits of the 16 digit grand
total.
) + * Grand total - shows Hi followed by the
most significant 8 digits of the 16 digit
grand total.
If Local Grand Total Reset CLr Gtot in
the instrument configuration menu has
been activated, operating the ) and
*buttons simultaneously for ten
seconds will result in Clr .no being
displayed with the no flashing.
Operating the *or &button will
change the display to Clr .YE5, the )
button will then reset the grand total to
zero which will be confirmed by a brief
display of Gt Clrd. See 6.20
(+ &Shows firmware version
Note: When optional alarms are fitted, the
BA367E-SS Counter may be configured to provide
direct access to the alarm setpoints from the display
mode when the (and * buttons are operated
simultaneously. See 9.3.13 and 9.3.14
2.3 Displays
The BA367E-SS Counter has two digital displays
and associated annunciators, plus a pulse input
indicator as shown on the front page of this manual.
Total Shows the total pulse count on the
display upper eight digit display. May be
reset to zero via front panel push
buttons or by a remote reset switch.
Rate Shows the pulse rate on the lower
Display six digit display. Total and rate
displays may be reversed.
Pulse input This disc in the lower left hand corner
indicator of the display 'rotates' for two
seconds each time an input pulse is
received on either input. Appears to
rotate continuously when combined
input frequency on both inputs
exceeds 0.5Hz.
Reset Activated while the total display
annunciator is being reset via the front panel
push buttons, or the external reset
terminals.
Rate Identifies rate display
annunciator
Total Identifies total display
annunciator
RTx Retransmitted pulse
annunciator annunciator.
Depends upon the setting of 5ource
in the pulse output configuration
menu.
5caled:
Annunciator activated each time
pulse output open collector is on,
i.e. Ron is less than 60+ 3V.
direct:
Annunciator continuously
activated.
6

3. INTRINSIC SAFETY CERTIFICATION
The BA367E-SS Counter has ATEX and IECEx gas
and dust certification. This section of the instruction
manual describes ATEX gas certification, dust,
IECEx and other approvals are each described in
separate appendixes to this manual.
3.1 ATEX gas certification
Notified Body Intertek Testing and Certification Ltd
have issued the BA367E-SS with an EC-Type
Examination Certificate number ITS16ATEX28408X.
This confirms compliance with harmonised
European standards and it has been used to confirm
compliance with the European ATEX Directive for
Group II, Category 1G equipment. The Counter
carries the community mark and subject to local
codes of practice may be installed in any of the
European Economic Area (EEA) member countries.
ATEX certificates are also acceptable for
installations in Switzerland.
This section of the instruction manual describes
ATEX installations in explosive gas atmospheres
conforming with EN60079-14 Electrical installations
design, selection and erection. When designing
systems for installation outside the UK the local
Code of Practice should be consulted.
3.2 Zones, gas groups and T rating
The BA367E-SS Counter has been certified
Ex ia IIC T5 Ga. When connected to a suitable
system it may be installed in:
Zone 0 explosive gas air mixture
continuously present.
Zone 1 explosive gas air mixture likely
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
Group C hydrogen
Having a temperature classification of:
T1 450°C
T2 300°C
T3 200°C
T4 135°C
T5 100°C
At ambient temperatures between:
-40 to +60oC When installed as an
intrinsically safe Ex i
instrument in an Ex e, Ex n,
Ex p or Ex t enclosure.
-40 to +70oC When used as an intrinsically
safe Ex i instrument not in
an Ex e, Ex n, Ex p or Ex t
enclosure.
3.3 Special conditions for safe use
The ATEX intrinsic safety certificate number has an
‘X’ suffix indicating that for some applications special
conditions apply for safe use.
When installed in an Ex e, Ex n, Ex p or Ex t
panel enclosure all connections to the
BA367E-SS must be made by appropriately
rated Zener barriers or galvanic isolators.
This means that when installed in an Ex e, Ex n,
Ex p or Ex t panel enclosure the BA367E-SS
remains an intrinsically safe instrument and must
comply with the installation requirements shown in
this manual.
The certificate also states:
The front of the stainless steel enclosure
complies with the requirements for Ex e, Ex n
Ex p & Ex t type of protection.
Therefore when correctly installed the BA367E-SS
Counter will not invalidate the Ex e, Ex n, Ex p or
Ex t panel enclosure certification.
Note: At temperatures below -20°C the instrument
will continue to function, but the display response will
become slower and the contrast will be reduced.
7

3.4 Power supply
When installed in a hazardous area the BA367E-SS
Counter should be powered via a certified Zener
barrier or galvanic isolator from a dc supply located
in the safe area or from associated apparatus with
an intrinsically safe output.
The input safety parameters of terminals 1 and 2
are:
Ui = 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.
The maximum equivalent capacitance and
inductance between terminals 1 and 2 is:
Ci = 2nF
Li = 4µH
To determine the maximum permissible cable
parameters the above figures, which are small and
may be ignored in many applications, should be
subtracted from the maximum permitted cable
parameters specified for the Zener barrier or
galvanic isolator powering the BA367E-SS Counter.
3.5 Pulse input terminals
The BA367E-SS pulse input is a separate
intrinsically safe circuit with the negative terminal
internally connected to the negative side of the
power supply terminal 2 and to the reset terminal
RS2. See Fig 1.
Some types of sensor that may be connected to the
BA367E-SS input, such as a switch contact or a
2-wire proximity detector, require energising to
determine their state. For sensors requiring
energising fitting an external link between terminals
3 & 4 of the BA367E-SS connects an internal 7V,
6mA supply to the input. Energising is not required
when the BA367E-SS input is connected to a
voltage source.
Fitting a link changes the output safety parameters
of the BA367E-SS Counter pulse input as shown in
the following table which also shows which types of
sensor require energising (link fitting).
Safety parameters
Type of input Link 3 & 4 Uo Io Po
Switch contact Yes 10.5V 8.2mA 25mW
Proximity detector Yes 10.5V 8.2mA 25mW
Open collector Yes 10.5V 8.2mA 25mW
Magnetic pick-off No 1V 11µA 3µW
Voltage input (low) No 1V 11µA 3µW
Voltage input (high) No 1V 11µA 3µW
3.5.1 Sensors that do not require energising
Magnetic pick-offs and voltage pulse inputs do not
require energising, see section 3.5. For intrinsic
safety purposes, sources of energy with output
parameters less than 1.5V; 100mA and 25mW are
considered to be simple apparatus (Clause 5.7 of
EN60079-11), which allows them to be ignored and
not documented when assessing an intrinsic safe
system.
When terminals 3 & 4 are not linked, the BA367E-SS
Counter input terminals comply with the
requirements for simple apparatus, thus allowing the
output parameters to be ignored when assessing the
safety of the sensor connected to the input.
This allows almost any certified intrinsically safe
voltage pulse circuit or certified magnetic pick-off to
be directly connected to the BA367E-SS Counter
input providing that:
a. The output parameters of the sensor or circuit
are equal to or less than:
Uo 28V dc
Io 200mA dc
Po 0.84W
b. The sensor and associated wiring can
withstand a 500V rms insulation test to earth.
The BA367E-SS EC-Type Examination
Certificate specifies that the equivalent
capacitance and inductance of the
BA367E-SS Counter input is:
Ci = 2nF
Li = 4H
To determine the maximum permissible cable
parameters these figures should be
subtracted from the maximum permitted
cable parameters specified for the sensor or
circuit connected to the input terminals of the
Counter. These input parameters are very
small and are therefore unlikely to make any
significant difference to the allowable cable
parameters.
c. The sensor is located in the same hazardous
area as the BA367E-SS.
8

3.5.2 sensors that require energising
Switch contacts, proximity detector or open collector
inputs require energising which is achieved by
linking Counter terminals 3 and 4 together as
described in section 3.5. When energised, the
output parameters of the pulse input terminals 5 and
6 are:
Uo = 10.5V dc
Io = 9.2mA dc
Po = 24mW
These output parameters do not comply with the
requirements for simple apparatus and should be
considered when assessing the safety of the sensor
connected to the totaliser pulse input.
Any certified intrinsically safe sensor may be
connected to a BA367E-SS energised input
providing that:
a. The sensor is a certified intrinsically safe device
having input parameters equal to or greater
than:
Ui 10.5V dc
Ii 9.2mA dc
Pi 24mW
or complies with the 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 the BA367E-SS.
d. Minimum operating voltage of a sensor
incorporating a NAMUR compliant proximity
detector is less than 7.5V.
3.6 Remote reset terminals
The BA367E-SS Counter may be reset to zero or to
the reset value by connecting the reset terminals
RS1 and RS2 together for more than one second.
These two terminals have the following input and
output safety parameters:
Uo = 3.8V dc
Io = 1.6mA dc
Po = 2.0mW
Ui = 28V dc
Ii = 200mA dc
Pi = 0.84W
The equivalent capacitance and inductance between
them is:
Ci = 0nF
Li = 0H
The maximum capacitance and inductance that may
be safely connected between the reset terminals
RS1 and RS2 is:
Co = 40µF
Lo = 1H
The Counter's total display may be reset from within
the hazardous area by any mechanically operated
switch connected directly to terminals RS1 and RS2.
To reset the total display from the safe area a Zener
barrier or intrinsically safe relay 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
diode return Zener barrier is not suitable for this
application.
Alternatively, the BA367E-SS Counter may be
configured so that the total display is reset to zero
when the &and *push buttons are operated
simultaneously for more than two seconds.
See 6.19.
3.7 Certification label information
The certification information label is fitted in a recess
on the top outer surface of the enclosure. It shows
the ATEX and IECEx certification information plus
BEKA associates name and location and the
instrument serial number. Non European certification
information may also be included.
BA367E-SS Certification information label
9

4. SYSTEM DESIGN FOR HAZARDOUS AREAS
4.1 Use with Zener barriers
Zener barriers are the least expensive intrinsically
safe interface between a safe and hazardous area.
However they require a high integrity earth
connection that may be expensive to install and they
do not provide isolation. When a high integrity earth
connection is not already available, it may be less
expensive and complicated to use galvanic isolators
for the installation of a single BA367E-SS Counter.
Terminals 2, 6 and RS2 of the BA367E-SS Counter
are internally connected together. If any of these
terminals are earthed, as shown in Figs 2 & 3, the
other common terminals should only be connected
to the same earth, i.e. the barrier busbar, or to
circuits that have 500V insulation to earth.
Any certified Zener barrier may be used with the
BA367E-SS Counter providing it's output parameters
do not exceed the input parameters of the terminals
to which it is connected. Only one polarity of Zener
barrier i.e. positive or negative, may be used in a
Counter system.
Fig 2 illustrates the basic circuit that is used for all
BA367E-SS Counter installations protected by Zener
barriers. For simplicity, connections for the optional
alarms, pulse output and 4/20mA output are shown
separately in section 9 this manual.
Fig 2 BA367E-SS used with Zener barriers
Alternatively the pulse input source may be located
in the safe area. Fig 3 shows how an additional
Zener barrier is used to transfer the signal to the
Counter in the hazardous area. When more than
one Zener barrier is used in a system all must have
the same polarity. i.e. all positive or all negative
barriers.
When designing a system it is important to
remember that terminals 2, 6 and RS2 are
interconnected within the BA367E-SS see Fig 1.
Fig 3 BA367E-SS used with Zener barriers
pulse source in safe area.
4.1.1 Power supply
The BA367E-SS Counter requires a minimum of 10V
between terminal 1 & 2 and consumes:
10mA without optional backlight
plus 22mA for optional backlight
plus 6mA when terminals 3 & 4 are linked
Any certified Zener barrier may be used to power a
BA367E-SS Counter providing the output safety
parameters of the barrier are equal to or less than
the input safety parameters of terminals 1 & 2 of the
BA367E-SS Counter.
Although this allows a wide variety of barriers to be
used, a positive polarity 28V; 93mA; 300Zener
barrier, which has an end-to-end resistance of about
340, is an industry standard device which is
frequently used. With this barrier the supply voltage
in the safe area, with the counter input energised,
must be between 15.5V and the maximum working
voltage of the Zener barrier which, depending upon
manufacturer, will be approximately 26V. The
minimum voltage increases to 23V if a display
backlight is fitted.
10