SIGMATEK 074.00660, Power Installation Manual

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Sigmatek FDD Sizes 7 to 9 Power Installation Guide
1.5 Electrical hazards
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. Hazardous voltage
may be present in any of the following locations:
•
AC and DC supply cables and connections
• Output cables and connections
• Many internal parts of the drive, and external option units
Unless otherwise indicated, control terminals are single insulated and must not be touched.
The supply must be disconnected by an approved electrical isolation device before gaining access to
the electrical connections.
The STOP and Safe Torque Off functions of the drive do not isolate dangerous voltages from the
output of the drive or from any external option unit.
The drive must be installed in accordance with the instructions given in this guide. Failure to observe
the instructions could result in a fire hazard.
1.6 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.
1.7 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 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.
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.
The Safe Torque Off function may be used in a safety-related application. The system designer is
responsible for ensuring that the complete system is safe and designed correctly according to the
relevant safety standards.
The design of safety-related control systems must only be done by personnel with the required
training and experience. The Safe Torque Off function will only ensure the safety of a machine if it is
correctly incorporated into a complete safety system. The system must be subject to a risk
assessment to confirm that the residual risk of an unsafe event is at an acceptable level for the
application.
1.8 Access to equipment
Access must be restricted to authorized personnel only. Safety regulations which apply at the place
of use must be complied with.
1.9 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. Drives must not be subjected to excessive physical force.
1.10 Hazardous environments
The equipment must not be installed in a hazardous environment (i.e. a potentially explosive
environment).