CG Drives & Automation 01-7318-01r1 EMC and Machine Directive 51
8. EMC and Machine Directive
8.1 EMC standards
The active front end and variable speed drive complies with
the following EMC standards:
Generic EMC standards i.e. EN(IEC) 61000-6-2 and
61000-6-4
EN(IEC)61800-3:2004 Adjustable speed electronic power
drive systems, part 3, EMC product standards:
In addition to that, AFG complies with low frequency
electromagnetic immunity and emission requirements for
dispersed generation systems in LV network i.e. IEC/TR
61000-3-15.
Standard:Category C3, for systems of rated supply voltage<
1000 VAC, intended for use in the second environment.
Optional: Category C2, for systems of rated supply
voltage <1.000 V, which is neither a plug in device nor a
movable device and, when used in the first environment, is
intended to be installed and commissioned only by
experienced person with the necessary skills in installing
and/or commissioning variable speed drives including their
EMC aspects.
8.2 Stop categories and
emergency stop
The following information is important if emergency stop
circuits are used or needed in the installation where a
variable speed drive is used. EN 60204-1 defines 3 stop
categories:
Category 0: Uncontrolled STOP:
Stopping by switching off the supply voltage. A mechanical
stop must be activated. This STOP may not be
implemented with the help of a variable speed drive or its
input/output signals.
Category 1: Controlled STOP:
Stopping until the motor has come to rest, after which the
mains supply is switched off. This STOP may not be
implemented with the help of a variable speed drive or its
input/output signals.
Category 2: Controlled STOP:
Stopping while the supply voltage is still present. This
STOP can be implemented with each of the variable speed
drives STOP command.
WARNING!
EN 60204-1 specifies that every machine
must be provided with a category 0 stop. If
the application prevents this from being
implemented, this must be explicitly stated.
Furthermore, every machine must be provided with an
Emergency Stop function. This emergency stop must
ensure that the voltage at the machine contacts, which
could be dangerous, is removed as quickly as possible,
without resulting in any other danger. In such an
Emergency Stop situation, a category 0 or 1 stop may be
used. The choice will be decided on the basis of the
possible risks to the machine.
NOTE:
With option Safe Stop, a stop according EN-IEC
62061:2005 SIL 2 & EN-ISO 13849-1:2006, can be
achieved. See Instruction manual for Emotron
VFX/FDU2.0.
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