Danfoss VLT AQUA Drive FC 202 Design Manual

NOTICE!
EXTREME AMBIENT CONDITIONS
Hot or cold temperatures compromise unit performance
and longevity.
•
Do not operate in environments where the
ambient temperature exceeds 55 °C (131 °F).
•
The drive can operate at temperatures down to
-10 °C (14 °F). However, proper operation at
rated load is only guaranteed at 0 °C (32 °F) or
higher.
•
If temperature exceeds ambient temperature
limits, extra air conditioning of the cabinet or
installation site is required.
9.3.1 Gases
Aggressive gases, such as hydrogen sulphide, chlorine, or
ammonia can damage the electrical and mechanical
components. The unit uses conformal-coated circuit boards
to reduce the
eects of aggressive gases. For conformal-
coating class specications and ratings, see
chapter 7.5 Ambient Conditions.
9.3.2 Dust
When installing the drive in dusty environments, pay
attention to the following:
Periodic maintenance
When dust accumulates on electronic components, it acts
as a layer of insulation. This layer reduces the cooling
capacity of the components, and the components become
warmer. The hotter environment decreases the life of the
electronic components.
Keep the heat sink and fans free from dust build-up. For
more service and maintenance information, refer to the
operating guide.
Cooling fans
Fans provide airow to cool the drive. When fans are
exposed to dusty environments, the dust can damage the
fan bearings and cause premature fan failure. Also, dust
can accumulate on fan blades causing an imbalance which
prevents the fans from properly cooling the unit.
9.3.3 Potentially Explosive Atmospheres
WARNING
EXPLOSIVE ATMOSPHERE
Do not install the drive in a potentially explosive
atmosphere. Install the unit in a cabinet outside of this
area. Failure to follow this guideline increases risk of
death or serious injury.
Systems operated in potentially explosive atmospheres
must fulll special conditions. EU Directive 94/9/EC
(ATEX 95) classies the operation of electronic devices in
potentially explosive atmospheres.
•
Class d species that if a spark occurs, it is
contained in a protected area.
•
Class e prohibits any occurrence of a spark.
Motors with class d protection
Does not require approval. Special wiring and containment
are required.
Motors with class e protection
When combined with an ATEX approved PTC monitoring
device like the VLT
®
PTC Thermistor Card MCB 112, instal-
lation does not need an individual approval from an
approbated organization.
Motors with class d/e protection
The motor itself has an e ignition protection class, while
the motor cabling and connection environment is in
compliance with the d
classication. To attenuate the high
peak voltage, use a sine-wave lter at the drive output.
When using a drive in a potentially explosive
atmosphere, use the following:
•
Motors with ignition protection class d or e.
•
PTC temperature sensor to monitor the motor
temperature.
•
Short motor cables.
•
Sine-wave output lters when shielded motor
cables are not used.
NOTICE!
MOTOR THERMISTOR SENSOR MONITORING
Drives with the VLT
®
PTC Thermistor Card MCB 112
option are PTB-certied for potentially explosive
atmospheres.
Mechanical Installation Con...
VLT
®
AQUA Drive FC 202
150 Danfoss A/S © 01/2018 All rights reserved. MG22B222
99

Danfoss VLT AQUA Drive FC 202 Specifications

General

Brand	Danfoss
Model	VLT AQUA Drive FC 202
Category	DC Drives
Language	English