BEKA BA374G User manual

Brand: BEKA

Model: BA374G

Type: User manual

BEKA BA374G is a field-mountable intrinsically safe instrument that can be configured as a Timer or Clock. As a Timer, it can measure and display the elapsed time between external events or control external events via two optional factory-fitted control outputs. When configured as a Clock, the BA374G displays local time, and the optional control outputs can turn on and off twice in each 24-hour period.

1. DESCRIPTION

The BA374G is a eld mounting intrinsically safe, instrument

which can be congured as a Timer or as a Clock. As a

Timer the BA374G can measure and display the elapsed time

between external events, or control external events via two

optional factory tted control outputs. When congured as a

Clock the BA374G displays local time and the optional control

outputs can turn on and o twice in each 24 hour period.

This abbreviated instruction sheet is intended to assist with

installation, a comprehensive instruction manual describing

safety certication, system design and conguration may be

downloaded from the BEKA website or may be requested

from the BEKA sales oce.

The BA374G Timer or Clock has IECEx, ATEX, UKEX, ETL

and cETL intrinsic safety certication for use in ammable gas

and dust atmospheres. The certication information label,

which is located on the top of the instrument assembly, shows

the certication numbers and codes. Other certications may

be shown. Copies of certicates may be downloaded from

the BEKA website.

Typical certication information label

2. INSTALLATION

The BA374G Timer or Clock has a robust IP66 glass reinforced

polyester (GRP) carbon loaded enclosure incorporating an

armoured glass window & stainless steel ttings. It is suitable

for exterior surface mounting in most industrial environments,

or pipe mounting using an accessory kit.

If the enclosure is not bolted to an earthed post or structure,

the earth terminal on the cable entry bonding plate, which

may be assembled on the inside or outside of the enclosure,

should be connected to local earthed metalwork or to the

plant’s potential equalising conductor.

Terminals A1, A2, A3 and A4 are only tted when the Timer

or Clock includes optional control outputs. See full manual

for details.

Step C

Remove the temporary

hole plug and install an

appropriate IP rated cable

gland or conduit fitting.

Feed the field wiring

through the cable entry.

Step D

Terminate field wiring on the

instrument assembly. Replace

the assembly on the enclosure

back-box and tighten the four

'A' screws.

Step B

Secure the enclosure

back-box to a flat surface

with M6 screws through

the four 'B' holes. Alternatively

use a pipe mounting kit.

Step A

Unscrew the four captive

'A' screws and separate

the indicator assembly

and the back-box.

A A

B B

DISPLAY

Insulated stud

for joining cable

screens

Earth

stud

A A

Fig 1 BA374G installation procedure

122

120

106

Two M20 x 1.5 tapped cable

entries. Supplied with an IP66

stopping plug and one

temporary hole plug.

Four M6 clearance holes for

surface mounting.

Optional

stainless

steel

legend

plate.

DISPLAY

RS1

Optional Control

output 1 Power

supply

Control

output 2

Add link to energise

pulse input A

Pulse input A 6

RS2

External

reset

Status

output

Add link to energise

pulse input b

Pulse input b 10

Scale Card

tab

Fig 2 Dimensions and terminal connections

EMC

For specied immunity all wiring should be in screened twisted

pairs with screens earthed at one point within the safe area.

Fig 3 Typical timer system

Scale card

The instrument’s units of measurement and tag information

are shown above the display on a slide-in scale card.

New instruments are tted with a scale card showing the

information specied when the instrument was ordered, if this

was not provided a blank scale card will be tted which can

easily be marked on-site. Custom printed scale cards are

available from BEKA associates.

To remove the scale card carefully pull the tab perpendicularly

away from the instrument assembly. See Fig 2 for the location

of the scale card tab.

Fig 4 Inserting scale card into instrument assembly

To replace the scale card carefully insert it into the slot shown

in Fig 2. Force should be applied evenly to both sides of the

scale card to prevent it twisting. The card should be inserted

until about 2mm of the transparent tab remains protruding.

3. OPERATION

The BA374G is controlled and congured via four front panel

push buttons. When congured as a Timer the push button

functions are:

& When local control is enabled starts the Timer

* When local control is enabled stops the Timer

) + * Shows the grand total (run time) in hours and tenths

of an hour irrespective of Timer conguration. If

buttons are held for longer than ten seconds the

grand total may be reset to zero if the grand total

reset sub-function Glr gtot is enabled in the

LoC r5Et conguration function.

To reset the grand total to zero from the display

mode press the ) + * buttons for ten seconds

until CLr. no is displayed. Using the & or *

button change the display to CLr. YE5 and press ).

& + * Resets the Timer to zero or to the set time 5Et t

depending on whether the Timer is congured to

time-up or time-down when the two buttons are

operated simultaneously for more than three

seconds. This is a congurable function.

( + * When enabled in the conguration menu, operating

these two buttons simultaneously provides direct

access from the display mode to the set time 5Et t

and, if the repeat timing cycle is enabled, to the

restart delay r5t dela.

( + & Shows in succession, rmware version number,

instrument function elap5e or cloc and output

accessories:

-A Control outputs

-P Status output (always tted)

See full instruction manual for description of use when

congured as a Clock.

Abbreviated Instruction for

BA374G intrinsically safe

two input eld mounting Timer or Clock

Issue 2

24th November 2022

BEKA associates Ltd. Old Charlton Rd, Hitchin, Hertfordshire,

SG5 2DA, UK Tel: +44(0)1462 438301 e-mail: [email protected]

web: www.beka.co.uk

DISPLAY

Safe area

Power

supply

Single channel

positive polarity

28V: 93mA

Zener barrier

Single channel

positive polarity

28V: 93mA

Zener barrier

Remote reset

in hazardous

area

Input b

Sensor

Input A

Remote reset

in safe area

6 5

4 3 10 9 8 7

RS2

RS1

2 1

Hazardous area

Sensor

Sensor output Input A Input b

Proximity detector

Switch Contact

Open collector

Link

3 & 4

Link

7 & 8

Voltage pulse

Magnetic pick-off

Don’t link

3 & 4

Don’t link

7 & 8

Fig 5 Configuration menu

Manuals and datasheets

can be downloaded from

http://www.beka.co.uk/ba374g

4. CONFIGURATION

BA374G Timer or Clocks are supplied configured as requested at time of ordering. If not specified default Timer configuration will be supplied but can easily be changed on-site. Fig 5 shows the

location of each function within the Timer configuration menu with a brief summary of the function. Please refer to the full instruction manual for detailed configuration information. Access to the

configuration menu is obtained by pressing the ( and ) buttons simultaneously. If the Timer or Clock's security code is set to default 0000 the first parameter function will be displayed.

If the instrument is protected by a security code, code will be displayed. The four digit code must be entered to gain access to the menu.

Display

mode

Security Code

Enter code by

pressing

* or & & (

to move to next

digit. Code 0000

allows direct

access to

the menu

Function

* or &

to select

Function of

instrument

elap5e

Timer interval

measurement

cloc

Clock time

display

Confirm selection

by entering 5ure

by pressing

* or &

and (

to move to

next digit

(

)

(

))

elap5e

( )

function

code

0000

(

)

) ) ) ) ) )

( )

input-a

col

Debounce

input-A

* or &

to select

level of

debounce.

default

heavy

light

)

debounce

( )

default

( )

col

(

)

( )

off

enbl

Start & stop

timer

* or &

to select how

timer is

controlled

local

Start

& button

Stop

* button

control 1

Start

a high (open)

Stop

b high (open)

control 2

Start

a low (closed)

Stop

b low (closed)

control 3

Start

a high (open)

Stop

b low (closed)

control 4

Start

a low (closed)

Stop

b high (open)

( )

local

5tar5top

Units of

display

* or &

to select

12:00

hours

minutes

seconds

( )

unit5

Set time

* or &

to adjust

value and

(

to move

control to

next digit.

Enable

cycle function

* or &

to toggle

between

on and off

( )

5et t

Clear grand total

* or &

to select ye5

to reset grand

total to zero.

Confirm

instruction by

entering 5ure.

Press

& or *

to adjust each

digit and (

to move to

next digit

(

)

clr.

(

clr gtot

0000

(

)

Power fail

* or &

to select how

timer functions

when power is

restored after

failure

idle

Stopped,

requires reset

& start input.

pau5e

Paused,

requires start

input.

continue

Resumes

timing.

(

)

idle

Direction of

count

* or &

to select

up or dn

(

)

( )

up or dn

0000

Enable

access to

Set Time from

display mode

* or &

to select

on or off

(

)

ac5et t

enbl

Debounce

input-b

* or &

to select

level of

debounce.

default

heavy

light

)

debounce

( )

default

Lower Display

cycle5 not

enabled

* or &

to select display

5td

Set time 5et t

off

lower display

disabled.

___________

cycle5

enabled

* or &

to select display

5td

Count No. &

total counts

with status

shown at start

of each

operation.

label

Count No. &

total counts

with status

shown

periodically.

off

lower display

disabled.

( )

di5p-2

5td

Security code

for direct

access to

Set Time

Enter code by

pressing

* or &

and (

to move to

next digit

Code 0000

allows direct

access.

)

( )

input-b

inp

type inp

type

Input-A

* or &

to select

Input type

col

Open

Collector.

volt5 l

Pulse

<1V >3V

volt5 h

Pulse

<3V >10V

coil

Magnetic

pick-off.

det

Proximity

detector.

contact

Switch

contact.

Input-b

* or &

to select

Input type

col

Open

Collector.

volt5 l

Pulse

<1V >3V

volt5 h

Pulse

<3V >10V

coil

Magnetic

pick-off.

det

Proximity

detector.

contact

Switch

contact.

)

( )

Local grand

total clear

* or &

to turn the

local grand total

reset function

on or off

When on is

selected

pressing

) and *

simultaneously

for more than 10

seconds in the

display mode

resets the

grand total.

)

clr gtot

( )

loc r5et

r5et.enbl

Local total

reset

* or &

to turn the

local total

reset function

on or off

When on is

selected

pressing

* and &

simultaneously

for more than 3

seconds in the

display mode

resets the

total display.

*cycle5

*cycl cnt

( )

Cycle count

* or &

to adjust

flashing digit

and (

to move

to next digit.

Sets number

of cycles to be

performed.

Timer repeat cycle function

*r5t dela

( )

Restart delay

* or &

to adjust

flashing digit

and (

to move

to next digit.

Sets delay

between cycles

in the same units

as 5cale t

) )

)

(

)

( )

off

enbl

Enable

output 1

* or &

to toggle

between

on and off

( )

*op1 dela

( )

Output on delay

* or &

to adjust

flashing digit

and (

to move

to next digit

Set delay in

seconds before

output 1

is energised.

)

op1 on

( )

Output on at

* or &

to select

required function

run

pau5e

delay

done

n re5et

n run

n pau5e

n delay

n done

re5et

Select action

that energises

output 1.

))

accd

0000

Define

Security Code

Enter by

pressing

& or * &

( to move

to next digit.

(

)

Reset

configuration to

Timer factory

defaults

Confirm

instruction by

entering 5ure.

Press

& or *

to adjust each

digit and (

to move to

next digit

(

)

r5et def

on off

op1

op1 off

Output off at

* or &

to select

required function

n run

n pau5e

n delay

n done

re5et

run

pau5e

delay

done

n re5et

Select action

that de-energises

output 1.

Output 1 configuration

Only included when optional Control Outputs are fitted

00000

)

(

)

( )

off

enbl

Enable

Stat oP

* or &

to toggle

between

on and off

( )

*5tat

dela

( )

Status output

on delay

* or &

to adjust

flashing digit

and (

to move

to next digit.

)

5tat on

( )

Status output

on at

* or &

to select

required state

run

pau5e

delay

done

n re5et

n run

n pau5e

n delay

n done

re5et

Select action

that energises

output.

))

5tat

off

Status output

off at

* or &

to select

required state

n run

n pau5e

n delay

n done

re5et

run

pau5e

delay

done

n re5et

Select action

that energises

output.

00000

op2

Only included when optional

Control Outputs are fitted

As op1

)

0000

code

0000

External

reset

* or &

to toggle

between

5td

fa5t

?ms

external

contact reset

time.

(

)

e r5et

5td

p-fail 5tat op

run n run

DISPLAY

Unless otherwise specified menu functions are shown on the upper display

The BA374G is CE marked to show compliance with the European Explosive Atmospheres Directive 2014/34/EU

and the European EMC Directive 2014/30/EU.

It is also UKCA marked to show compliance with UK statutory requirements Equipment and Protective Systems

Intended for Use in Potentially Explosive Atmospheres Regulations

UKSI 2016:1107 (as amended) and with the Electromagnetic Compatibility Regulations

UKSI 2016:1091 (as amended).

Fig 5 Conguration menu

BEKA BA374G User manual

BEKA BA374G User manual

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