Safety Guidelines; Use Of Qualified Personnel - Pilz PSS Series Operating Manual

Digital inputs (DI2)
Depending on the application area and its respective regulations, the PSS
may be used without test pulses for applications up to category 3
in accordance with EN 954-1 (03/97). The possibility of a short circuit
occurring in the external wiring between different inputs or to L+ must be
eliminated through appropriate wiring.
Test pulses must be used for category 4 applications (for connection
examples please see Chapter 7, "Wiring the Inputs and Test Pulse
Outputs").

Safety guidelines

Failure to keep to these guidelines will render all warranty and liability
claims invalid:
• All health and safety / accident prevention regulations for the particular
area of application must be observed.
• Before using the unit it is necessary to perform a safety assessment in
accordance with the Machinery Directive 98/37/EC.

Use of qualified personnel

The safety system may only be assembled, installed, programmed,
commissioned, operated, maintained and decomissioned by qualified
personnel. Qualified personnel are people who, because they are:
• Qualified electrical engineers and
• Have received training from qualified electrical engineers,
are suitably experienced to operate devices, systems, plant and machinery
in accordance with the general standards and guidelines for safety
technology.
Operating Manual: PSS SB 3006-3 Series
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