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Digitax HD M75X Series Installation and Technical Guide
Issue Number: 5
3 Mechanical installation
3.1 Safety information
3.2 Planning the installation
The following considerations must be made when planning the installation:
3.2.1 Access
Access must be restricted to authorized personnel only. Safety regulations which apply at the place of use must be complied with.
3.2.2 Environmental protection
The drive must be protected from:
•
Moisture, including dripping water or spraying water and condensation. An anti-condensation heater may be required, which must be switched off
when the drive is running.
•
Contamination with electrically conductive material
•
Contamination with any form of dust which may restrict the fan, or impair airflow over various components
•
Temperature beyond the specified operating and storage ranges
•
Corrosive gasses
The product is supplied with a vent cover to prevent debris (e.g. wire off-cuts) from entering the drive. The vent cover must be removed before first
power up.
3.2.3 Cooling
The heat produced by the drive must be removed without its specified operating temperature being exceeded. Refer to section 3.10
.
3.2.4 Electrical safety
The installation must be safe under normal and fault conditions. Electrical installation instructions are given in Chapter 4
3.2.5 Fire protection
The drive enclosure is not classified as a fire enclosure. A separate fire enclosure must be provided.
For installation in the USA, a NEMA 12 enclosure is suitable.
For installation outside the USA, the following (based on IEC 62109-1, standard for PV inverters) is recommended.
Enclosure can be metal and/or polymeric, polymer must meet requirements which can be summarized for larger enclosures as using materials
meeting at least UL 94 class 5VB at the point of minimum thickness.
Air filter assemblies to be at least class V-2.
The location and size of the bottom shall cover the area shown in Figure 3-1. Any part of the side which is within the area traced out by the 5° angle is
also considered to be part of the bottom of the fire enclosure.
Follow the instructions
The mechanical and electrical installation instructions must be adhered to. Any questions or doubt should be referred to the supplier of the
equipment. It is the responsibility of the owner or user to ensure that the installation of the drive and any external option unit, and the way
in which they are operated and maintained, comply with the requirements of the Health and Safety at Work Act in the United Kingdom or
applicable legislation and regulations and codes of practice in the country in which the equipment is used.
Stored charge
The drive contains capacitors that remain charged to a potentially lethal voltage after the AC supply has been disconnected. If the drive
has been energized, the AC supply must be isolated at least ten minutes before work may continue.
Normally, the capacitors are discharged by an internal resistor. Under certain, unusual fault conditions, it is possible that the capacitors
may fail to discharge, or be prevented from being discharged by a voltage applied to the output terminals. If the drive has failed in a manner
that causes the display to go blank immediately, it is possible the capacitors will not be discharged. In this case, consult Nidec Industrial
Automation or their authorized distributor.
Competence of the installer
The drive must be installed by professional assemblers who are familiar with the requirements for safety and EMC. The assembler is
responsible for ensuring that the end product or system complies with all the relevant laws in the country where it is to be used.
Enclosure
The drive is intended to be mounted in an enclosure which prevents access except by trained and authorized personnel, and which
prevents the ingress of contamination. It is designed for use in an environment classified as pollution degree 2 in accordance with
IEC 60664-1. This means that only dry, non-conducting contamination is acceptable.
WARNING
WARNING
WARNING
WARNING
NOTE
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