Mounting Configurations - Danfoss VLT AQUA Drive FC 202 Design Manual

Mechanical Installation Con...
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 airflow 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 fulfill special conditions. EU Directive 94/9/EC
(ATEX 95) classifies the operation of electronic devices in
potentially explosive atmospheres.
•
Class d specifies 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 classification. To attenuate the high
peak voltage, use a sine-wave filter 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 filters when shielded motor
cables are not used.
MG22B102
Design Guide
NOTICE
MOTOR THERMISTOR SENSOR MONITORING
Drives with the VLT
option are PTB-certified for potentially explosive
atmospheres.

9.4 Mounting Configurations

Table 9.1 lists the available mounting configurations for
each enclosure. For specific wall mount or pedestal mount
installation instructions, see the operating guide. See also
chapter 8 Exterior and Terminal Dimensions.
NOTICE
Improper mounting can result in overheating and
reduced performance.
Mounting
Pedestal
Wall
Table 9.1 Mounting Configurations for Enclosures E1h–E4h
Mounting considerations:
•
•
•
•
•
•
•
1) For non-typical installation, contact the factory.
Danfoss A/S © 05/2017 All rights reserved.
®
PTC Thermistor Card MCB 112
E1h E2h
X X
– –
Locate the unit as near to the motor as possible.
See chapter 7.6 Cable Specifications for the
maximum motor cable length.
Ensure unit stability by mounting the unit to a
solid surface.
Enclosures E3h and E4h can be mounted:
-
Vertically on the backplate of the panel
(typical installation).
- Vertically upside down on the backplate
1)
of the panel.
- Horizontally on its back, mounted on
the backplate of the panel.
- Horizontally on its side, mounted on
1)
floor of the panel.
Ensure that the strength of the mounting location
supports the unit weight.
Ensure that there is enough space around the
unit for proper cooling. Refer to
chapter 5.13 Back-channel Cooling Overview.
Ensure enough access to open the door.
Ensure cable entry from the bottom.
E3h E4h
– –
X X
9
1)
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