MSI MS-7021 Operations Instructions download pdf (Page 5)

Safety

Leuze electronic MSI-SR4 5

2 Safety

Before using the E-STOP relay, a risk evaluation must be performed according to valid standards and

regulations.

For mounting, operating and testing, this document as well as all applicable national and international stan-

dards and regulations must be observed, printed out and handed to the affected personnel.

ª Before working with the E-STOP relay, completely read and understand the documents applicable to

your task.

In particular, the following national and international legal regulations apply for the start-up, technical

inspections and work with E-STOP relays:

• Machinery directive 2006/42/EC

• Use of Work Equipment Directive 89/655/EEC supplemented by Directive 95/63 EC

• Accident-prevention regulations and safety rules

• Other relevant standards

• Standards

2.1 Symbols

2.2 Proper use

The E-STOP relay must only be used after it has been selected in accordance with the respectively appli-

cable instructions and relevant standards, rules and regulations regarding labor protection and occupa-

tional safety, and after it has been installed on the machine, connected, commissioned, and checked

by a competent person.

• The safety interface device must be tested regularly by competent personnel.

• Two switching contacts must always be looped into the switch-off circuit of the machine. To prevent

welding, relay switching contacts must be fused/protected externally according to the technical data.

• The safety interface device must be exchanged after a maximum of 20 years. Repairs or the

exchange of parts subject to wear and tear do not extend the service life.

• If an AOPD or other recommended safety component with lower safety category or Performance

Level is connected, the overall safety level for the corresponding path of the control cannot be higher

than that of the connected safety components.

• The control of the machine or system that is to be safeguarded must be electrically influenceable. A

switch-off command initiated by an MSI must result in an immediate shutdown of the dangerous

movement.

• The "Reset" acknowledgment button for unlocking the start/restart interlock must be mounted in such

a way that the entire danger zone can be seen from its mounting location.

• Message outputs (state outputs) must not be used for switching safety-relevant signals.

• In the event of changes to the MSI-SR4, all warranty claims against the manufacturer of the safety

interface device are rendered void.

• Depending on external wiring, dangerous voltages may be present at the switching outputs. In addi-

tion to the power supply, these must be switched off and safeguarded against being switched back on

prior to all work on the MSI.

• For contact multiplication of the release circuit, switching elements with positive-guided contacts

must be used.

Warning sign – This symbol indicates possible dangers. Please pay especially close

attention to these instructions!

WARNING

Improper or inappropriate use can result in danger to the life and limbs of the machine operator

or in damage to property.

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MSI MS-7021 Operations Instructions Page 5

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