User guide

14 Unidrive SP Short Form Guide
www.controltechniques.com Issue Number: 2
3 Mechanical Installation
Safety information
3.1 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.
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.
WARNING
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 Control Techniques or their authorized
distributor.
WARNING
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.
WARNING
The weights of the size 4, 5 and 6 drives are as follows:
Size 4: 30 kg (66 lb)
Size 5: 55 kg (121 lb)
Size 6: 75 kg (165 lb)
Use appropriate safeguards when lifting these models
WARNING
When replacing the terminal covers the screws should be tightened with a maximum
torque of 1 N m (0.7 lb ft).
NOTE