BEKA BA454D, Manual

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If no items are contained in the menu
the operator can only start, pause
and stop a batch. Inclusion of the
Select Batch function allows the
operator to select the batch setpoint
from one of nine pre-entered values.
To aid identification, each setpoint
may be identified by a name having
up to sixteen digits.
If included in the menu, the Batch
Size function allows the adjustment
of the pre-entered batch setpoints.
Batch History shows the size of the
last ten batches which have been
completed.
The Configure function provides
operator access to the batch
controller configuration menus
described in section 6. Entry to
these menus is protected by an
external security link between
terminals 18 and 19 and an optional
four digit security code.
2.2 Power supply failure
If the power supply for the BA454D fails during
a batch, the instrument will remember the
amount of product dispensed when the supply
failed, together with the number of cycle
completed if autostart is being used. When
power is restored, the batch controller will
return in the Paused condition displaying the
amount of product dispensed prior to the
failure. Operating the
Start pushbutton will
complete the batch.
If the supply failure occurs when the batch
controller is in the Ready or Complete state,
the controller will return in the same state when
power is restored.
3. INTRINSIC SAFETY CERTIFICATION
3.1 ATEX certificate
The BA454D has been issued with an EC-
Type Examination Certificate by Notified Body
Intertek Testing Services (ITS) confirming
compliance with the European ATEX Directive
94/9/EC for Group II, Category 1 gas and dust
atmospheres, Ex ia IIC T5 equipment. The
instrument bears 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 instruction manual describes installations
in explosive gas atmospheres which conform
with EN 60079:Part14 Electrical Installation in
Hazardous Areas. When designing systems
for installation outside the UK, the local Code
of Practice should be consulted.
For the use in the presence of combustible
dust, please refer to Appendix 3.
3.2 Zones, gas groups and T rating
The BA454D has been issued with EC Type
Examination certificate ITS03ATEX21378
confirming that it complies with the
requirements for Group II Category 1 G
equipment; Ex ia IIC T5 Ga (Tamb –40 to
60
o
C). When connected to a suitable system
the BA454D 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
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