Danfoss VLT HVAC Drive FC 102, Руководство по эксплуатации

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NOTICE
MOTOR THERMISTOR SENSOR MONITORING
VLT
®
AutomationDrive units with the VLT
®
PTC
Thermistor Card MCB 112 option are PTB-certified for
potentially explosive atmospheres.
4.5 Installation and Cooling Requirements
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:
-
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)
•
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.
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. Use of 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
[m
3
/hr (cfm)]
Heat sink fan
[m
3
/hr (cfm)]
E1h 510 (300) 994 (585)
E2h 552 (325) 1053–1206 (620–710)
E3h 595 (350) 994 (585)
E4h 629 (370) 1053–1206 (620–710)
Table 4.1 Airflow Rate
Mechanical Installation VLT® HVAC Drive FC 102
14 Danfoss A/S © 01/2017 All rights reserved. MG16O102
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