CG Drives & Automation,01-6142-01r0
EMC and standards
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6.
EMC and standards
6.1
EMC standards
The AC drive complies with the following standards:
EN(IEC)61800-3:2004 Adjustable speed electronic power
drive systems, part 3, EMC product standards:
Standard:
category C3, for systems of rated supply
voltage< 1000 VAC, intended for use in the second
environment.
Optional:
Category C2 and even Category C1 for frame
size C drives, 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 AC
drives including their EMC aspects.
6.2
Stop categories and
emergency stop
The following information is important if emergency stop
circuits are used or needed in the installation where a AC
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 AC 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 AC 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 AC 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 “Safe Torque Off (STO)”
stop according EN-IEC 62061:2005 SIL 3 & EN-ISO
13849-1:2006, can be achieved.
See chapter, Safe Stop option
