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2021-05-06·BA00·III·en·00
Safety
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Termination board and
connecting cable for Zone 2
Series 9491
3
Safety
The device has been manufactured to the state of the art while observing recognised
safety-related rules. When using the device, it is nevertheless possible for hazards to occur
to life and limb of the user or third parties or for the device, environment or material assets to
be compromised.
Use the device only
- if it is not damaged
- as intended, while remaining aware of safety and dangers
- in accordance with these operating instructions.
Safety data and ambient conditions can be found on the side of the device and in the data
sheet.
3.1
Intended Use
The type 9491/T1 termination boards and the corresponding type 9491/Z1 connecting cables
are accessories for the IS1+ Remote I/O system. The devices can be used in hazardous
areas in Zones 2 and 22, as well as the safe area, and are used for parallel switching of
non-intrinsically safe field circuits for two IS1+ I/O modules of the same type. They thereby
enable I/O module redundancy.
Likewise, only type 9491/Z1 connecting cables can be used to connect the termination board
and I/O module.
"Intended use" includes complying with these operating instructions and the other applicable
documents, e.g. the data sheet. Any other use of the device is not intended.
3.2
Personnel Qualification
Qualified specialist personnel are required to perform the activities described in these
operating instructions. This primarily applies to work in the following areas:
• Product selection, project engineering
• Mounting/dismounting the device
• Installation
• Commissioning
• Maintenance, repair, cleaning
Specialists who perform these tasks must have a level of knowledge that meets applicable
national standards and regulations.
Additional knowledge is required for tasks in hazardous areas! R. STAHL recommends
having a level of knowledge equal to that described in the following standards:
• IEC/EN 60079-14 (Electrical installations design, selection and erection)
• IEC/EN 60079-17 (Inspection and maintenance of electrical installations)
• IEC/EN 60079-19 (Equipment repair, overhaul and reclamation)