Control Techniques Epsilon EP-P, Reference Manual

Page: 8 / 248

vi
Epsilon EP-P Drive Reference Manual

www.controltechniques.com Revision: A4
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.


Supply isolation device

The AC supply or high voltage DC 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 EP206/209/216 and 3 minutes for Epsilon EP202/204 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) - High Leakage Current

The drive must be grounded by a conductor sufficient to carry all possible fault current in the event of a fault. This
equipment has high earth leakage current. You must comply with local safety regulations with respect to minimum size and
special installation requirements on the protective earth conductor for high leakage current equipment. 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.

The drive alone does not provide branch circuit protection. Branch circuit protection must be provided in accordance with
the National Electrical Code and any additional local codes.

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. External control circuits identified as PELV circuits do not need
this isolation when they are completely within a zone of equipotential bonding, generally within a single enclosure or group
of enclosures bonded together.