BEKA BA3400 Series Pageant Plug In DI Module Instructions
- June 5, 2024
- BEKA
Table of Contents
Instructions for BA3400 series Pageant plug-in
Digital Input modules
Issue 1 26th April 2022
INTRODUCTION
The BA3400 series plug-in DI (Digital Input) modules are part of the BEKA Pageant Display system. Two models are available:
BA3401
BA3402| 8 contact inputs
8 NAMUR 2-wire inputs
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Both models have IECEx, ATEX, and UKCA intrinsic safety apparatus
certification.
The DI modules plug into any of the seven module sockets at the rear of the
BA3101 Pageant Operator Display.
Power for the module is provided by the BA3101 Operator Display which
determines the module’s response speed. If required multiple DI modules may be
plugged into an Operator Display.
Fig 1 shows a BA3400 DI plug-in module with its features identified.
Each of the eight inputs is a separate intrinsically safe circuit but they are
not isolated from each other. Inputs should therefore only be connected to
isolated sensors and wiring such as reed relays and switch contacts. The
BA3402 can power and monitor the status of 2-wire NAMUR compliant sensors,
such as proximity detectors. It may also be used to monitor switch status in
noisy environments.
In addition to their normal function, inputs 7 and 8 may be used for the
decoding of a quadrature signal from a plant position sensor or a BEKA BA490
rotary encoder.
Plug-in BA3400 series Pageant DI Modules are CE marked to show compliance with
the European Explosive Atmospheres Directive 2014/34/EU and the European EMC
Directive 2014/30/EU.
The modules are 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.
INTRINSIC SAFETY CERTIFICATION
Notified Body CML B.V. and the UK Approved Body Eurofins CML has issued the BA3400 series plug-in DI modules with the following apparatus certificates:
IECEx
ATEX
UKCA| IECEx CML 21.0004X
CML 21ATEX2110X
CML 21UKEX2111X
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The ATEX certificate has been used to confirm compliance with the European ATEX Directive for Group II, Category 1GD equipment, similarly, the UKCA certificate has been used to confirm compliance with UK statutory requirements. All BA3400 series DI modules carry both the CE and UKCA marks, and subject to local codes of practice, they may be installed in any of the European Economic Area (EEA) member countries and in the UK. ATEX certificates are also acceptable for installations in some non-EU countries.
These instructions describe IECEx, UKCA, and ATEX installations that conform with IEC / EN 60079-14 Electrical installations design, selection, and erection. When designing systems the local code of practice should be consulted.
2.1 Zones, gas groups, and T rating
All of the BA3400 series DI certificates specify the same certification codes:
BA3401
Ex ia IIC T4 Ga
Ex ia IIIC T135ºC Da
-40ºC ≤ Ta ≤ 65ºC| BA3402
Ex ia IIC T4 Ga
Ex ia IIIC T195ºC Da
-40ºC ≤ Ta ≤ 65ºC
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- Dust certification requires the Pageant Operator Panel and the BA3400 series DI module to have a minimum additional IP54 rear protection.
2.2 Special conditions for safe use
- Under certain extreme circumstances, the non-metallic parts incorporated in the enclosure of this equipment may generate an ignition-capable level of electrostatic charge. Therefore, the equipment shall not be installed in a location where the external conditions are conducive to the build-up of electrostatic charge on such surfaces. In addition, the equipment shall only be cleaned with a damp cloth.
- In installations requiring EPL Da, Db, or Dc, the equipment shall be mounted to an enclosure that provides a minimum degree of protection of IP5X and which meets the requirements of EN60079-0 Clause 8.4 (material composition requirements for metallic enclosures for Group III) and/or EN60079-0 Clause 7.4.3 (Avoidance of a build up of electrostatic charge for Group III) as appropriate. All cable entries into the equipment shall be made via cable glands which provided a minimum degree of protection of IP5X.
- The BA3400 series shall only be used as part of a BEKA Pageant System.
2.3 Certification label information
The certification information label is fitted to the side of the BA3400 series
plug-in DI module. It shows the model number, certification information, BEKA
associate’s address, and year of manufacture. The order code and the serial
number are shown on a separate label.
Certification Information Label
INSTALLATION
The BA3400 series plug-in DI module should be fitted into one of the seven
sockets at the rear of a BA3101 Pageant Operator Panel as shown in Fig 2.
For a hazardous area installation, the plug-in DI module must be manufactured
by BEKA and have a certification that specifies that it shall be used as part
of a BEKA Pageant system.
3.1 Power consumption
The intrinsic safety certification of the BA3400 series plug-in modules
permits any combination to be installed in a Pageant BA3101 display but there
are power limitations.
The percentage of the total available power that these modules consume is:
BA3401
BA3402| 8 contact inputs
8 NAMUR 2-wire inputs| 4%
40%
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The sum of the percentage power consumption of all the plug-in modules installed in a BA3101 display must not exceed 100%. 3.2 BA3400 series plug- in DI module Installation
- The BA3400 series DI module may be fitted before or after the Operator Panel is installed. The Operator Panel should not be powered when the module is fitted.
- Carefully insert the DI module into the selected slot at the rear of the BA3101 Pageant Operator Panel. When correctly positioned secure the module by tightening the two captive module fixing screws.
- Connect field wiring to each of the eight pairs of removable input terminals shown in Fig 3. Each input is a separate intrinsically safe circuit and field wiring should comply with segregation requirements specified in IEC/EN 60079-14. If a multicore cable is used for the inputs, it should have Type A or B construction as specified in Clause 16.2.2.7 of IEC/EN 60079-14 Wiring should be supported to avoid damaging the module’s terminals.
INPUTS
Both models have eight inputs that are not isolated from each other and should
therefore only be connected to isolated sensors. The BA3401 should be used for
contact and open collector inputs and the BA3402 for NAMUR compliant 2-wire
sensors and for contact and open collector inputs in noisy environments.
4.1 BA3401 inputs
Each of the eight inputs has the following electrical specification allowing
it to sense the status of a wide range of switch contacts and sensors with
open-collector outputs.
Sensing voltage
Sensing Current
Switching threshold
Closed
Open| 3.3V
33µA
< 25kΩ
35kΩ
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The intrinsic safety parameters for each input are not restrictive as for intrinsic safety purposes the output current Io is considered to be zero. Therefore the maximum inductance that may be connected to Lo is not specified, and the cable length between the BA3401 input terminals and the sensor is only limited by the permitted capacitance Co which is extremely large.
Ui = 0
Uo = 4.94V
Io = 0
Po = 0
Co = 100µF for IIC
Any mechanically or magnetically activated switch contact located in the same
hazardous area as the BA3401 may be directly connected to any of the eight
input channels providing the switch and associated wiring can withstand a 500V
insulation test to earth. Most magnetically activated reed relays comply with
these requirements. Most certified intrinsically safe sensors with an open
collector output can also be connected to any of the eight input channels,
providing the sensor output is compatible with the sensing
voltage and current.
4.1.1 BA3401 quadrature input
Input channels 7 and 8 may be used together for decoding a quadrature signal
from a plant position sensor or a BEKA BA490 rotary encoder. Fig 5 shows the
required connections.
The quadrature sensor and associated wiring
should be able to withstand a 500V rms insulation test to earth.
4.2 BA3402 inputs
Each of the eight inputs has the following electrical specification allowing
it to sense the status of a wide range of 2-wire NAMUR compliant sensors such
as proximity detectors. The BA3402 may also be used for monitoring the status
of switch contacts and sensors with open collector outputs in high-noise
environments.
Sensing voltage Switching threshold Proximity detector
Contact| 8.2V
Lower
1.2mA
2.6kΩ| Upper
2.1mA
5.5kΩ
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The intrinsic safety parameters for each input are shown below.
Ui = 0
Uo = 8.8V
Io = 7.4mA
Po = 16mW
Co = 5.5µF for IIC
Lo = 556mH for IIC
Almost any certified intrinsically safe 2-wire NAMUR compliant sensor located
in the same hazardous area as the BA3402 may be directly connected to any of
the eight input channels. The Ci and Li of the sensor, plus the cable
capacitance and inductance, should be less than the Co and Lo of the BA3402
input. The sensor and wiring should be able
to withstand a 500V rms insulation test to earth.
Because the BA3402 has higher noise immunity than the BA3401, it
should be used in preference to the BA3401 for switch contact monitoring in
noisy environments. A switch contact located in the same hazardous area as the
BA3402 may be connected to any of the eight input channels providing the
switch and associated wiring can withstand a 500V insulation test to earth.
Most certified intrinsically safe sensors with an open collector output can
also be connected to any of the inputs, providing the sensor output is
compatible with the BA3402 sensing voltage and 500V isolation is maintained.
4.2.1 BA3402 quadrature input Input channels 7 and 8 may be used together for
decoding a quadrature signal generated by a certified sensor with a quadrature
output, or from two separate sensors having a 90º phase difference.
Connections and waveforms are shown in Figs 5 and 6.
MAINTENANCE
BA3400 series DI input module should be regularly inspected to ensure that it
has not been damaged. The frequency of inspection depends upon environmental
conditions.
No attempt should be made to repair a faulty BA3400 series plug-in DI module.
Suspect modules should be returned to BEKA associates or your local BEKA
agent.
GUARANTEE
BA3400 series DI modules that fail within the guarantee period should be
returned to BEKA associates or your local BEKA agent. It is helpful if a brief
description of the fault
symptoms is provided.
CUSTOMER COMMENTS
BEKA associates are always pleased to receive comments from customers about our products and services. All communications are acknowledged and whenever possible, suggestions are implemented.
BEKA associates Ltd,
Old Charlton Road,
Hitchin SG5 2DA UK
Tel: +44 (0) 1462 438301
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