NOTE!
The current rating of drives in D3 and D4 frames are de-rated by 3%, when adding the NEMA 3R kit. Drives in E2 frames require no
derating
NOTE!
A door fan or fans are required on the Rittal cabinet to remove the losses not contained in the backchannel of the drive. The minimum
door fan airflow required for the D3 and D4 is 391 m^3/h (230 cfm). The minimum door fan airflow required for the E2 is 782 m^3/
h (460 cfm). If additional components or heat losses are added to the enclosure, a calculation must be made to ensure the proper
airflow is provided to cool the inside of the Rittal enclosure.
Kit contents:
•
Ductwork components
•
Mounting hardware
•
0.63 in [16 mm], M5 torx screws for top vent cover
•
0.39 in [10 mm], M5 for attaching drive mounting plate to en-
closure frame
•
M10 nuts to attach drive to mounting plate
•
Gasket material
Torque requirements:
1.
M5 screws/ nuts torque to 20 in-lbs (2.3 N-M)
2.
M6 screws/ nuts torque to 35 in-lbs (3.9 N-M)
3.
M10 nuts torque to 170 in-lbs (20 N-M)
4.
T25 Torx screws torque to 20 in-lbs (2.3 N-M)
NOTE!
Please see the instructions
175R5922
for further information
3.4.3 Installation on pedestal
This section describes the installation of a pedestal unit available for the
VLT series adjustable frequency drives frames D1 and D2. This is an 8 in
[200 mm] high pedestal that allows these frames to be floor mounted.
The front of the pedestal has openings for input air to the power com-
ponents.
The adjustable frequency drive connector plate must be installed to pro-
vide adequate cooling air to the control components of the adjustable
frequency drive via the door fan and to maintain the IP21/NEMA 1 or
IP54/NEMA 12 degrees of enclosure protections.
Figure 3.28: Drive on pedestal
3 How to Install
VLT
®
Automation Drive FC 300
Instruction Manual High Power
3-30
MG.33.U2.22 - VLT
®
is a registered Danfoss trademark
3
