Safet
Precautions
Dec 2021
ATM60 / ATM90 / KHK53 13
3.5 Encoder Safety Precautions for Installation, Operation and Maintenance
• The ATM60/ATM90/KHK53 encoders must only be fitted or main-
tained when free from voltage. Consequently, for any electrical or
electronic devices, machine and system parts linked to installa-
tion, operation or maintenance, the voltage must previously have
been switched off. Also check that they are voltage-free.
• Cabling, earthing, screening and overvoltage protection are of
particular importance.
• Check whether switching off devices, machines or system parts
causes dangers.
• If necessary, place warning signs to prevent unauthorised per-
sons from entering the danger area.
• The correct functioning of safety features shall be checked (e.g.
emergency stop).
• EMC-compliant earthing and screening must be performed with
particular care, to ensure satisfactory operation of the devices.
• The safe assembly of all components must be checked prior to
switching back on.
• Avoid impacts on shaft and collet.
• Programs which frequently use Explicit Messages, to write pa-
rameters to the EEPROM (non-volatile memory) of the encoders,
should be avoided. This could significantly reduce the lifetime.
• During commissioning of the encoders via a configuration tool,
there must be no connection to a running network.
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