Stahl 9174 Series, Руководство пользователя, Страница: 5 / 18

917460330020
2019-05-13·HB00·III·en·03
Safety
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Electronic relay module
Series 9174
3 Safety
The device has been manufactured according to the state of the art of technology while
observing recognised safety-related rules. When using the device, it is nevertheless possible
for hazards to occur to the 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
- while taking this manual into account
3.1 Intended Use
The 9174 electronic relay module is an automation solution for hazardous areas of Zone 1,
2 and 22 and safe areas. The device is intended for installation in areas with a degree of
pollution of 1 or 2.
The relay module uses an intrinsically safe activation signal to switch a resistive,
capacitive or inductive Ex e load. It is an optional addition to the intrinsically safe digital
outputs, e.g. for a remote I/O module. The relay module is not suited for switching loads with
very high start-up currents, such as incandescent lamps.
"Intended use" includes complying with this manual, the 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 tasks described in this manual.
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)