User Manual

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2.2 Assembly, connection, programming
These multifunctional counters are built and tested in accordance with IEC/EN
61010-1, Protection Class II – Safety Measures for Electronic Measuring
Equipment. They have left the factory in a condition that is in compliance with
all safety-relevant requirements. In order to maintain this condition and en-
sure operational safety, the User is requested to observe the safety notes and
warnings given in these operating instructions!
Danger!
Risk of safety hazards due to incorrect/faulty as-
sembly and connection.
• The max. operating voltages must not be exceeded!
• 12 – 24VDC and 24VAC multifunctional counters have to be operated at
safety extra-low voltages (SELV) and under potential-compensated condi-
tions in order to prevent hazardous shock currents.
• An external fuse has to be provided to protect the multifunctional counter
(see Chapter 10, Technical Data).
• Installation and assembly shall be carried out by skilled and trained electri-
cians only.
• Do not connect the multifunctional counter without making sure that it no
longer carries any live voltages. Always separate it from the mains supply
before connecting.
• Make sure that live terminals are properly protected against inadvertent
contact.
• To ensure proper protection of terminals against hand contact, make sure
that the live conductors are properly connected to the terminals.
• It‘s not allowed to use the multifunctional counter outside of the specified
temperature range. If neccessary appropriate precoutions have to be applied
Safety
(e.g. air ventilation).• The rules and regulations set forth by the local elec-
tricity providers have to be observed.
• Do not establish any connections with non-allocated (NC) terminals.
• Multifunction counters may only be operated in a properly installed condi-
tion.
• If safe operation seems to be impaired, make the multifunctional counter
inoperable and secure it against inadvertent operation.
• Scope of applications: industrial processes and controls. Overvoltage across
the terminals must be limited to the values of overvoltage category II.
• The installation and wiring environment has considerable impact on the
electromagnetic compatibility of the multifunctional counter. Therefore,
electromagnetic compatibility of the entire plant has to be ensured during
the installation.
• In areas presenting the risk of ESD (electrostatic discharge), make sure to
use ESD-protected plugs and switches during the installation.
• If the functions “prescaler input”, “preset input” and “key reset” are not al-
lowed to be used by the machine/plant operator, access to these functions
must be blocked for machine operators. Depending on the machine/plant
design or concept, non-permissible input may impair the operational safety
and function of the machine or plant.
Danger!
The manufacturer of the machines / plants has to
ensure, that no risks result from this.
• The machine/plant manufacturer shall be responsible for the preparation of
operating instructions / plant description including the following:
Safety