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2
Safety information
2.1
Warnings, Cautions and Notes
A Warning contains information which is essential for avoiding a safety hazard.
WARNING
A Caution contains information which is necessary for avoiding a risk of damage to the
product or other equipment.
CAUTION
NOTE
A Note contains information which helps to ensure correct operation of the product.
2.2
Electrical safety - general warning
The voltages used in the drive can cause severe electrical shock and/or burns, and could be lethal.
Extreme care is necessary at all times when working with or adjacent to the drive.
Specific warnings are given at the relevant places in this User Guide.
2.3
System design and safety of personnel
The drive is intended as a component for professional incorporation into complete equipment or a
system. If installed incorrectly, the drive may present a safety hazard. The drive uses high voltages
and currents, carries a high level of stored electrical energy, and is used to control equipment which
can cause injury. Close attention is required to the electrical installation and the system design to
avoid hazards either in normal operation or in the event of equipment malfunction. System design,
installation, Commissioning/start-up and maintenance must be carried out by personnel who have
the necessary training and experience. They must read this safety information and this User Guide
carefully.
No function of the drive isolates dangerous voltages from the output of the drive or from any
external option unit (This includes the STOP and Safe Torque Off functions). The supply must be
disconnected by an approved electrical isolation device before gaining access to the electrical
connections.
With the sole exception of the Safe Torque Off function, none of the drive functions must be
used to ensure safety of personnel, i.e. they must not be used for safety-related functions.
Careful consideration must be given to the functions of the drive which might result in a hazard,
either through their intended behavior or through incorrect operation due to a fault. In any
application where a malfunction of the drive or its control system could lead to or allow damage,
loss or injury, a risk analysis must be carried out, and where necessary, further measures taken to
reduce the risk - for example, an over-speed protection device in case of failure of the speed
control, or a fail-safe mechanical brake in case of loss of motor braking.
The system designer is responsible for ensuring that the complete system is safe and
designed correctly according to the relevant safety standards.
6
SI-Universal Encoder User Guide
Issue: 2
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