Derating For Low Air Pressure; Derating For Running At Low Speeds; Options For Vlt ® Micro Drive Fc - Danfoss VLT Micro Quick Manual

Quick Guide
1.9 Special Conditions
1.9.1 Derating for Ambient Temperature
The ambient temperature measured over 24 hours should
be at least 5°C lower than the max. ambient temperature.
If the frequency converter is operated at high ambient
temperature, the continuous output current should be
decreased.
The frequency converter has been designed for operation
at max 50°C ambient temperature with one motor size
smaller than nominal. Continuous operation at full load at
50 °C ambient temperature will reduce the lifetime of the
frequency converter.

1.9.2 Derating for Low Air Pressure

The cooling capability of air is decreased at low air
pressure.
1.10 Options for VLT ®
Ordering No
132B0100
132B0101
132B0102
132B0103
132B0104
132B0105
132B0106
132B0107
132B0108
132B0109
132B0110
132B0111
132B0120
132B0121
132B0122
132b0126
132b0127
132b0128
132b0129
132b0130
Danfoss Line Filters and brake resistors are available upon request.
VLT Micro Drive Quick Guide
Micro Drive FC 51
Description
VLT Control Panel LCP 11 w/o potentiometer
VLT Control Panel LCP 12 with potentiometer
Remote Mounting Kit for LCP incl. 3 m cable IP55 with LCP 11, IP21 with LCP 12
Nema Type 1 kit for M1 frame
Type 1 kit for M2 frame
Type 1 kit for M3 frame
De-coupling plate kit for M1 and M2 frames
De-coupling plate kit for M3 frame
IP21 for M1 frame
IP21 for M2 frame
IP21 for M3 frame
DIN rail mounting kit for M1 and M2 frames
Type 1 kit for M4 frame
Type 1 kit for M5 frame
De-coupling plate kit for M4 and M5 frames
M1 frame spare parts kits
M2 frame spare parts kits
M3 frame spare parts kits
M4 frame spare parts kits
M5 frame spare parts kits
®
MG.02.B6.02 - VLT is a registered Danfoss trademark
For altitudes above 2000m, please contact Danfoss
regarding PELV.
Below 1000m altitude no de-rating is necessary but above
1000m the ambient temperature or the maximum output
current should be decreased.
Decrease the output by 1% per 100m altitude above
1000m or reduce the max. ambient temperature by 1
degree per 200m

1.9.3 Derating for Running at Low Speeds

When a motor is connected to at frequency converter, it is
necessary to check that the cooling of the motor is
adequate.
A problem may occur at low speeds in constant torque
applications. Running continuously at low speeds – below
half the nominal motor speed – may require additional air
cooling. Alternatively, choose a larger motor (one size up).
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