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NC4 non-contact tool setting system: Before you begin
Information to the machine supplier / installer
It is the machine supplier’s responsibility to ensure that the user is made aware of any hazards involved in
operation, including those mentioned in Renishaw product literature, and to ensure that adequate guards
and safety interlocks are provided.
If the NC4 unit fails, the output signal may falsely indicate beam not blocked. Do not rely on signals from
the NC4 unit to halt the movement of the machine.
Information to the equipment installer
All Renishaw equipment is designed to comply with the relevant UK, EU and FCC regulatory requirements.
It is the responsibility of the equipment installer to ensure that the following guidelines are adhered to, in
order for the product to function in accordance with these regulations:
• any interface unit MUST be installed in a position away from any potential sources of electrical noise
(for example, power transformers, servo drives);
• all 0 V/ground connections should be connected to the machine “star point” (the “star point” is a single
point return for all equipment ground and screen cables). This is very important and failure to adhere
to this can cause a potential difference between grounds;
• all screens must be connected as outlined in the user instructions;
• cables must not be routed alongside high current sources (for example, motor power supply cables),
or be near high-speed data lines;
• cable lengths should always be kept to a minimum.
Equipment operation
If this equipment is used in a manner not specied by the manufacturer, the protection provided by the
equipment may be impaired.
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