Installation And Cooling Requirements; Lifting The Unit - Danfoss VLT AutomationDrive FC 302 Operating Manual

Mechanical Installation
NOTICE
MOTOR THERMISTOR SENSOR MONITORING
Drives with the VLT
option are PTB-certified for potentially explosive
atmospheres.

4.5 Installation and Cooling Requirements

4 4
NOTICE
Improper mounting can result in overheating and
reduced performance.
Installation requirements
•
Locate the unit as near to the motor as possible.
See chapter 9.5 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:
-
-
-
-
•
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 9.9 Enclosure Airflow.
•
Ensure enough access to open the door.
•
Ensure cable entry from the bottom.
1) For non-typical installation, contact the factory.
Cooling requirements
•
Ensure that top and bottom clearance for air
cooling is provided. Clearance requirement:
225 mm (9 in).
•
Provide sufficient airflow flow rate. See Table 4.1.
•
Consider derating for temperatures starting
between 45 °C (113 °F) and 50 °C (122 °F) and
elevation 1000 m (3300 ft) above sea level. See
the design guide for detailed information.
14
VLT® AutomationDrive FC 302
®
PTC Thermistor Card MCB 112
Vertically on the back plate of the panel
(typical installation).
Vertically upside down on the back
plate of the panel. 1)
Horizontally on its back, mounted on
the back plate of the panel. 1)
Horizontally on its side, mounted on
floor of the panel. 1)
Danfoss A/S © 04/2018 All rights reserved.
The drive utilizes a back-channel cooling concept that
removes heat sink cooling air. The heat sink cooling air
carries approximately 90% of the heat out of the back
channel of the drive. Redirect the back-channel air from
the panel or room by using:
•
Duct cooling
Back-channel cooling kits are available to direct
the heat sink cooling air out of the panel when
IP20/Chassis drives are installed in Rittal
enclosures. These kits reduce the heat in the
panel and smaller door fans can be specified.
•
Back-wall cooling
Installing top and base covers to the unit allows
the back-channel cooling air to be ventilated out
of the room.
NOTICE
For E3h and E4h enclosures (IP20/Chassis), at least 1
door fan is required on the enclosure to remove the heat
not contained in the back-channel of the drive. It also
removes any additional losses generated by other
components inside the drive. To select the appropriate
fan size, calculate the total required airflow.
Secure the necessary airflow over the heat sink.
Frame Door fan/top fan
3
[m /hr (cfm)]
E1h51h 510 (300)
E2h 552 (325)
E3h 595 (350)
E4h 629 (370)
Table 4.1 Airflow Rate

4.6 Lifting the Unit

Always lift the drive using the dedicated lifting eyes. To
avoid bending the lifting holes, use a bar.
WARNING
RISK OF INJURY OR DEATH
Follow local safety regulations for lifting heavy weights.
Failure to follow recommendations and local safety
regulations can result in death or serious injury.
•
Ensure that the lifting equipment is in proper
working condition.
•
See chapter 3.2 Power Ratings, Weights, and
Dimensions for the weight of the different
enclosure sizes.
•
Maximum diameter for bar: 20 mm (0.8 in).
•
The angle from the top of the drive to the
lifting cable: 60° or greater.
Heat sink fan
3
[m /hr (cfm)]
994 (585)
1053–1206 (620–710)
994 (585)
1053–1206 (620–710)
MG38A202