
Safety
Leuze electronic S400 5
2 Safety
Before using the safety hinge switch, a risk assessment must be performed according to valid standards
(e.g. EN ISO 12100, EN ISO 13849-1). For mounting, operating and testing, document S400 Sicher imple-
mentieren und betreiben, application information as well as all applicable national and international stan-
dards, regulations, rules and directives must be observed. Observe and print out relevant and supplied
documents and distribute to the affected personnel.
The following standards apply for the risk assessment at the protective device prior to using the safety
hinge switch:
• EN ISO 12100, Safety of machinery, risk assessment
• EN ISO 13849-1, Safety-related parts of control systems
The realizable category of the integration in control circuits according to EN ISO 13849-1 is dependent on
the used contact block and wiring.
In particular, the following national and international legal regulations apply for the start-up, technical
inspections and work with safety hinge switch:
• Machinery directive 2006/42/EC
• Low voltage directive 2006/95/EC
• Use of work equipment directive 2009/104/EC
• Safety regulations
• Accident-prevention regulations and safety rules
• Industrial safety regulation and employment protection act
• Product Safety Act
2.1 Approved purpose and foreseeable improper operation
2.1.1 Proper use
• The safety hinge switch must only be used after it has been selected in accordance with the respec-
tively applicable instructions and relevant standards, rules and regulations regarding labor protection
and safety at work, and after it has been installed on the machine, connected, commissioned, and
checked by a competent and authorized person.
• When selecting the safety hinge switch it must be ensured that its safety-related capability meets or
exceeds the required performance level PLr ascertained in the risk assessment.
• It must be in perfect condition and inspected regularly.
• The safety hinge switch may be used in combination with a safety relay or a safety control.
S400, S410 and S420 safety hinge switches must be connected in such a way that a dangerous state can
only be activated while the protective device is closed and so that the dangerous state stops upon opening
of the protective device. It must not be used if the point of operation can be accessed during the lag time
before the dangerous state has ended. If stepping behind the guard is possible, a start/restart interlock is
mandatory.
Connection conditions:
• the dangerous state can only be activated while the protective device is closed
• opening the protective device while the machine is running triggers a stop command and ends the
dangerous state
For safety-related information you may also contact the local authorities (e.g., industrial inspec-
torate, employer's liability insurance association, labor inspectorate, occupational safety and
health authority).
WARNING
A running machine can cause severe injuries!
Make certain that, during all conversions, maintenance work and inspections, the system is securely
shut down and protected against being restarted.