Safety Of Machinery - Emerson Epsilon Eb Series Reference Manual

Epsilon Eb and E Series EN Drives Reference Manual

Safety of Machinery

Within the European Union all machinery in which this product is used must comply with
Directive 89/392/EEC, Safety of Machinery.
The product has been designed and tested to a high standard, and failures are very unlikely.
However the level of integrity offered by the product's control function – for example stop/
start, forward/reverse and maximum speed – is not sufficient for use in safety-critical
applications without additional independent channels of protection. All applications where
malfunction could cause injury or loss of life must be subject to a risk assessment, and further
protection provided where needed.
Warning
General warning
Failure to follow safe installation guidelines can cause death or serious injury. The voltages used in
this unit can cause severe electric shock and/or burns, and could be lethal. Extreme care is necessary
at all times when working with or adjacent to this equipment. The installation must comply with all
relevant safety legislation in the country of use.
AC supply isolation device
The AC supply must be removed from the drive using an approved isolation device or disconnect
before any servicing work is performed, other than adjustments to the settings or parameters
specified in the manual. The drive contains capacitors which remain charged to a potentially lethal
voltage after the supply has been removed. Allow at least 6 minutes for Epsilon 205, 3 minutes for
Epsilon 202/203 and 30 seconds for E Series drives after removing the supply before carrying out
any work which may involve contact with electrical connections to the drive.
Products connected by plug and socket
A special hazard may exist where the drive is incorporated into a product which is connected to the
AC supply by a plug and socket. When unplugged, the pins of the plug may be connected to the
drive input, which is only separated from the charge stored in the bus capacitor by semiconductor
devices. To avoid any possibility of electric shock from the pins, if they are accessible, a means
must be provided for automatically disconnecting the plug from the drive (e.g., a latching
contactor).
Grounding (Earthing, equipotential bonding)
The drive must be grounded by a conductor sufficient to carry all possible fault current in the event
of a fault. The ground connections shown in the manual must be followed.
Fuses
Fuses or over-current protection must be provided at the input in accordance with the instructions
in the manual.
Isolation of control circuits
The installer must ensure that the external control circuits are isolated from human contact by at
least one layer of insulation rated for use at the applied AC supply voltage.
6
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com