Mechanical Installation; Electrical Safety; Fire Protection; Hazardous Areas - Emerson SP1201 Installation Manual

Safety Product
Introduction
Information information
5

Mechanical Installation

This chapter describes the installation of the Regen drive components.
Key features of this chapter include:
• Regen component dimensions
• Enclosure sizing and layout
• Enclosure ventilation
• Cubicle design with high ambient temperatures
Refer to the Mechanical Installation sections in both the Unidrive SP and
Unidrive SPM User Guides for drive mechanical information.
5.1

Safety information

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
WARNING
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.
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
WARNING
system complies with all the relevant laws in the country
where it is to be used.
5.2

Planning the installation

The following considerations must be made when planning the
installation:
5.2.1 Access
Access must be restricted to authorised personnel only. Safety
regulations which apply at the place of use must be complied with.
The IP (Ingress Protection) rating of the drive is installation dependent.
For further information, please refer to the Unidrive SP and Unidrive
SPM User Guides.
5.2.2 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
5.2.3 Cooling
The heat produced by the drive / additional components must be
removed without its specified operating temperature being exceeded.
Note that a sealed enclosure gives much reduced cooling compared with
a ventilated one, and may need to be larger and/or use internal air
circulating fans.
For further information, please refer to section 5.5.2 Enclosure sizing on
page 62.
NOTE
Through hole mounting is possible for all Unidrive SP modules and the
Unidrive SPMC which can reduce cubicle heating and cooling
requirements. Refer to Unidrive SP User Guide and Unidrive SPM User
Guide.
Unidrive SP Regen Installation Guide
Issue Number: 2
System Mechanical Electrical
design installation installation
www.controltechniques.com
Getting
Optimisation Parameters
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5.2.4

Electrical safety

The installation must be safe under normal and fault conditions.
Electrical installation instructions are given in Chapter 6 Electrical
Installation on page 65.
5.2.5

Fire protection

The drive enclosure is not classified as a fire enclosure. A separate fire
enclosure must be provided.
5.2.6 Electromagnetic compatibility
Variable speed drives are powerful electronic circuits which can cause
electromagnetic interference if not installed correctly with careful
attention to the layout of the wiring.
Some simple routine precautions can prevent disturbance to typical
industrial control equipment.
If it is necessary to meet strict emission limits, or if it is known that
electromagnetically sensitive equipment is located nearby, then full
precautions must be observed. Refer to section 6.4 EMC
(Electromagnetic compatibility) on page 77.
5.2.7

Hazardous areas

The drive must not be located in a classified hazardous area unless it is
installed in an approved enclosure and the installation is certified.
Isolation device
The AC supply must be disconnected from the drive using an
approved isolation device before any cover is removed from
the drive or before any servicing work is performed.
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 energised, the AC
WARNING 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 authorised distributor.
Technical Component
Diagnostics
data sizing
45