Safety Instructions; Conformity To Standards - Stahl 9143 Betriebsanleitung

Operating instructions
1

Safety instructions

The most important safety instructions are summarised in this chapter. It is intended to
supplement the relevant regulations which must be studied by the personnel responsible.
When working in hazardous areas, the safety of personnel and plant depends on
complying with all relevant safety regulations. Assembly and maintenance staff working on
installations therefore have a particular responsibility. The precondition for this is an
accurate knowledge of the applicable regulations and provisions.
When installing and operating the device, the following are to be observed:
• The national installation and assembly regulations (e.g. EN 60079-14) apply.
• The I.S. power supply is to be installed outside of the explosion hazard area.
• Zone 1 intrinsically safe devices may be connected to the intrinsically safe signal circuits.
• The I.S. power supply may only be connected to devices which will not be subjected to
voltages higher than AC 250 V (50 Hz).
• The safe maximum values of the connected field device(s) must correspond to the values
of the data sheet or the EC-type examination certificate.
• Interconnecting several active devices in an intrinsic safety circuit may result in other
safe maximum values. This could endanger the intrinsic safety!
• National safety and accident prevention regulations
• The generally recognised technical regulations
• The safety guidelines in these operating instructions
• Any damage can compromise and even neutralise the explosion protection.
Use the device in accordance with the regulations and for its intended purpose only (see
"Function").
Incorrect or impermissible use or non-compliance with these instructions invalidates our
warranty provision.
No changes to the devices or components impairing their explosion protection are
permitted.
The device may only be fitted and used if it is in an undamaged, dry and clean state.
2

Conformity to standards

The I.S. power supply Type 9143 complies with the following standards and directives:
•
Directive 94/9/EC
•
EN 50 014, EN 50 020
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I.S. Power Supply Type 9143
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