built in such a way that they can also handle general application configurations as long as they fall within the specified entity
parameters.
4.
SAFETY CHECKS
The following checks should be carried out to ensure the safety of barrier installation. Use the checklist below to prevent important
safety consideration being overlooked when installing, commissioning, modifying or servicing installation of ARL-BR-IS Series of
safety barriers. Check the list before and after the safety barrier is installed. Each item in the list is cross-referenced to the
appropriate section in the manual.
For Factory Mutual based installations see FM certification information.
Table 2: Installation Checks
Item
Installation Check
1
Before beginning installation, check that the safety documentation confirms that the proposed system is fully certified (if
applicable) and complies with the recommendations contained in the relevant sections of IEC 60079-14 for the gas group,
temperature classification and area classification required.
2
Make sure the barriers are of the correct type and polarity as specified in the safety documentation.
3
Make sure the barriers are mounted the right way around and are properly attached so that the necessary earth contact is
made securely in accordance with the safety documentation and in compliance and recommendations of IEC 60079-14.
4
Inspect all the connected cables carefully between the barriers and the hazardous area equipment. Make sure that the
cables are the type specified in the safety documentation and that they are connected to the correct terminals.
5
Make sure all hazardous area cables are well secured and are segregated from all other cables.
6
Make sure all hazardous area cable parameters for hazardous area circuits are not exceeded (see relevant control
drawings).
7
Make sure all hazardous area cables and cable screens are terminated correctly, the latter preferably via the earth
“ground lug” on the hazardous side of each barrier.
8
Make sure all unused hazardous area cables are safely connected to earth ground.
9
Make sure all hazardous area energy storing devices are independently and appropriately certified.
10
Inspect all tagging or identification labels and make sure they relate to the correct barrier types, polarities and circuit loop
numbers.
11
Inspect carefully all cables connected to the safe area equipment and make sure they are connected to the safe area
terminals of the barriers.
12
Make sure all barriers are protected adequately against moisture, dust, dirt, vibration, excessive temperatures, physical
damage and unauthorized modifications.
5.
WIRING CONNECTIONS
5.1.
Overview
The ARL-BR-IS Series barriers come in 6 different models, but its body form is the same for all six models. Depending on the model,
only certain terminals will be available on the barrier for wiring.
The terminals are positioned in clearly marked designations for hazardous and safe area connectivity.
5.2.
Signal Connections
Before connecting any signal lines, the following precautions must be taken to ensure safety of the barrier installation.
5.2.1.
Precautions
Clearly designate hazardous area and safe area cabling as defined by relevant codes of practice and route cabling to the barriers
through clearly separated and identified conduits or trunking. Deal with spare cable cores or screens as described later in this
manual.
