Pilz PSSu K F INC - Manual (Page 10)

Safety
Operating Manual PSSu K F INC
1001688­EN­06 10
Requirements of the PSSu system:
} The counter modules must be part of a control system PSSu PLC or PSSu multi (not
decentralised I/O system).
} The function blocks have to be assigned to the FS resource of the PSSu system where
the counter modules are inserted. Control via SafetyNet is not permitted.
Demands on the sensors:
} Incremental encoders with RS422 interfaces may be used as sensors.
} Connect the sensors mechanically independently to the axis. If this is not possible, the
connection should be positive­locking without wearing parts as e.g. chains or drive
belts. If it is not possible to avoid this, the mechanical connection of the sensors must
be monitored.
Alternatively, it is possible to use a sensor that internally has 2 independent measured
value recording systems.
Please note during configuration and within the user program:
} The input values must be diverse. This can be achieved through different
} Scaling
– Direction of rotation/count direction
– Offset
} If more than two counters are used, each individual counter module of a PSSu system
must supply diverse input values to the other counter modules of the PSSu system.
} Safe standstill monitoring must be carried out by feasibility with a safe travel command
in the function block.
} Test the safety functions when commissioning or recommissioning.
3.2 Safety regulations
3.2.1 Use of qualified personnel
The products may only be assembled, installed, programmed, commissioned, operated,
maintained and decommissioned by competent persons.
A competent person is someone who, because of their training, experience and current pro­
fessional activity, has the specialist knowledge required to test, assess and operate the
work equipment, devices, systems, plant and machinery in accordance with the general
standards and guidelines for safety technology.
It is the company’s responsibility only to employ personnel who:
} Are familiar with the basic regulations concerning health and safety / accident preven­
tion
} Have read and understood the information provided in this description under "Safety"
} And have a good knowledge of the generic and specialist standards applicable to the
specific application.