Westermo DDW-222 - Manual (Page 6)

6 6642-22203
Special condition for use
Ambient temperature:
This unit is designed for use in extreme ambient temperature conditions according to the
following: –40 ºC ≤ T
amb
≤ +70 ºC
Installation in an apparatus cabinet:
This unit requires installation in an Ex certified apparatus cabinet suitable for the area of
use and providing a degree of protection of at least IP54.
Resistance to impact:
This unit requires installation in an apparatus cabinet where adequate resistance to
impact is provided by the apparatus cabinet.
See "Installation in an apparatus cabinet" above for requirements on the external
apparatus cabinet.
Resistance to light:
This unit requires installation in an apparatus cabinet where it is protected from light
(for example daylight or light from luminaires).
See "Installation in an apparatus cabinet" above for requirements on the external
apparatus cabinet.
Transient protection:
This unit requires external transient protection at the power supply terminals to be set
at a level not exceeding 67 VDC.
Secureness of plugs:
When this unit is installed in an explosive atmospheres, all connectors must be
mechanically secured to prevent loosening.
Conductor temperature:
When this unit is installed in locations with high ambient temperature, special precautions
shall be taken upon the choice of external conductor(s) and the temperature rating of
the conductor(s).
Directive 94/9/EC alongside with other directives:
Directive 2004/108/EC (EMC) applies and to assure a safe performance of this unit under
the scope of Directive 94/9/EC, refer to the electromagnetic immunity level specified
under "Type tests and environmental conditions" in this manual.
Warning marking:
When this unit is installed in an explosive atmospheres, the warning label submitted
together with this unit shall be attached on the unit and visible to the end user.
Standards and date of compliance
EN 60079-0 and EN 60079-15
2011-03-24