Air Humidity; Aggressive Environments - Danfoss VLT FC 102 Series Design Manual

Introduction to VLT® HVAC D...
2.2.2 What Is Covered
2 2
The EU "Guidelines on the Application of Council Directive
2004/108/EC" outline three typical situations of using an
adjustable frequency drive.
1. The adjustable frequency drive is sold directly to
the end user. For such applications, the
adjustable frequency drive must be CE labeled in
accordance with the EMC directive.
2. The adjustable frequency drive is sold as part of a
system. It is being marketed as complete system,
e.g., an air-conditioning system. The complete
system must be CE labeled in accordance with
the EMC directive. The manufacturer can ensure
CE labeling under the EMC directive by testing
the EMC of the system. The components of the
system do not need to be CE marked.
3. The adjustable frequency drive is sold for instal-
lation in a plant. It could be a production or a
heating/ventilation plant designed and installed
by professionals of the trade. The adjustable
frequency drive must be CE labeled under the
EMC directive. The finished plant should not bear
the CE mark. However, the installation must
comply with the essential requirements of the
directive. This is assumed by using appliances
and systems that are CE labeled under the EMC
directive
2.2.3 Danfoss Adjustable frequency drive
and CE Labeling
The purpose of CE labeling is to facilitate trade within the
EU and EFTA.
However, CE labeling may cover many different specifi-
cations. Thus, check what a given CE label specifically
covers.
The covered specifications can be very different and a CE
label may therefore give the installer a false feeling of
security when using an adjustable frequency drive as a
component in a system or an appliance.
Danfoss CE labels the adjustable frequency drives in
accordance with the low-voltage directive. This means that
if the adjustable frequency drive is installed correctly,
Danfoss guarantees compliance with the low-voltage
directive. Danfoss issues a declaration of conformity that
confirms our CE labeling in accordance with the low-
voltage directive.
14
Design Guide
The CE label also applies to the EMC directive provided
that the instructions for EMC-compatible installation and
filtering are followed. On this basis, a declaration of
conformity in accordance with the EMC directive is issued.
This Design Guide offers detailed instructions for installation
to ensure EMC-compatible installation. Furthermore,
Danfoss specifies with what the different products comply.
Danfoss provides other types of assistance that can help
obtain the best EMC result.
2.2.4 Compliance with EMC Directive
As mentioned, the adjustable frequency drive is mostly
used by professionals of the trade as a complex
component forming part of a larger appliance, system or
installation. Note that the responsibility for the final EMC
properties of the appliance, system or installation rests
with the installer. As an aid to the installer, Danfoss has
prepared EMC installation guidelines for the Power Drive
system. The standards and test levels stated for Power
Drive systems are complied with, provided that the EMC-
compatible instructions for installation are followed, see.

2.3 Air humidity

The adjustable frequency drive has been designed to meet
the IEC/EN 60068-2-3 standard, EN 50178 pkt. 9.4.2.2 at
122 °F [50 °C].

2.4 Aggressive Environments

An adjustable frequency drive contains a large number of
mechanical and electronic components. All are to some
extent vulnerable to environmental effects.
Do not install the adjustable frequency drive in
environments with airborne liquids, particles, or gases
capable of affecting and damaging the electronic
components. Failure to take the necessary protective
measures increases the risk of stoppages, thus reducing
the life of the adjustable frequency drive.
Degree of protection as per IEC 60529
The Safe Torque Off function may only be installed and
operated in a control cabinet with degree of protection
IP54 or higher (or equivalent environment). This is required
to avoid cross faults and short circuits between terminals,
connectors, tracks and safety-related circuitry caused by
foreign objects.
Danfoss A/S © Rev. 06/2014 All rights reserved.
2004/108/EC
CAUTION
MG11BC22