Digitax SF Instruction Manual
1. Before Use
1. Important Safety Instructions
Stored Electrical Charge
The drive contains capacitors that remain charged to a potentially lethal voltage after the AC
supply has been disconnected. If the drive has been energized, the AC supply must be isolated
at least ten minutes before work may continue.
Mechanical Hazards
Careful consideration must be given to the functions of the drive or controller which might
result in a hazard, either through their intended behaviour 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 overspeed protection
device in case of failure of the speed
control, or a failsafe mechanical brake in case of loss
of motor braking.
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one of the drive functions must be used to ensure safety of personnel, i.e. they must not be
used for safetyrelated functions.
The system designer is responsible for ensuring that the
complete system is safe and designed correctly according to the relevant safety standards
Access to equipment
Access must be restricted to authorized personnel only. Safety regulations which apply at the
place of use must be complied with.
Environmental limits
Instructions in this guide regarding transport, storage, installation and use of the equipment
must be complied with, including the specified environmental limits. This includes
temperature, humidity, contamination, shock and vibration. Equipment must not be
subjected to excessive physical force.
Hazardous environments
The equipment must not be installed in a hazardous environment (i.e. a potentially
explosive environment).
Motor
The safety of the motor under variable speed conditions must be ensured.
To avoid the risk of physical injury, do not exceed the maximum specified speed of the
motor.
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Mechanical brake control
Any brake control functions are provided to allow well coordinated operation of an external
brake with the drive. While both hardware and software are designed to high standards of
quality and robustness, they are not intended for use as safety functions, i.e. where a fault
or failure would result in a risk of injury. In any application where the incorrect operation of
the brake release mechanism could result in injury, independent protection devices of
proven integrity must also be incorporated.
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