EMC standards, immunity
EN 61800-3, EN 61000-6-1/2,
EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN 61000-4-6
Control card performance
Scan interval 5 ms
Control card, USB serial communication
USB standard 1.1 (full speed)
USB plug USB type B device plug
NOTICE
Connection to PC is carried out via a standard host/device USB cable.
The USB connection is galvanically isolated from the supply voltage (PELV) and other high-voltage terminals.
The USB connection is not galvanically isolated from protective earth. Use only isolated laptop/PC as connection to the
USB connector on the frequency converter or an isolated USB cable/converter.
Protection and features:
•
Electronic thermal motor protection against overload.
•
Temperature monitoring of the heat sink ensures that the frequency converter trips if the temperature reaches a
predefined level. An overload temperature cannot be reset until the temperature of the heat sink is below the
allowed values.
•
The frequency converter is protected against short-circuits on motor terminals U, V, W.
•
If a mains phase is missing, the frequency converter trips or issues a warning (depending on the load).
•
Monitoring of the intermediate circuit voltage ensures that the frequency converter trips if the intermediate circuit
voltage is too low or too high.
•
The frequency converter is protected against earth faults on motor terminals U, V, W.
11.4
General Technical Data - Filter
Response time [ms] <0.5
Settling time - reactive current control [ms] <40
Settling time - harmonic current control (filtering) [ms] <20
Overshoot - reactive current control [%] <20
Overshoot - harmonic current control [%] <10
Table 11.4 Power Ranges (LHD with AF)
11.4.1 Power Rating
Grid conditions
Supply voltage 380–480 V, +5%/-10%
Mains voltage low/mains drop-out:
During low mains voltage or a mains drop-out, the filter continues until the intermediate circuit voltage drops below the
minimum stop level, which corresponds to 15% below the filter lowest rated supply voltage. Full compensation cannot be
expected at mains voltage lower than 10% below the filter lowest rated supply voltage. If mains voltage exceed the filter highest
rated voltage, the filter continues to work but harmonic mitigation performance is reduced. The filter does not cut out until main
voltages exceed 580 V.
Supply frequency 50/60 Hz ±5%
Max. imbalance temporary between mains phases
where mitigation performance is kept high.
3.0% of rated supply voltage
Filter mitigates at higher mains imbalance but harmonic mitigation
performance is reduced
Max THDv pre-distortion
10% with kept mitigation performance
Reduced performance for higher pre-distortion levels
Specifications Operating Instructions
MG37A202 Danfoss A/S © Rev. 2014-07-29 All rights reserved. 149
11 11
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