1.7.3 EMC Test Results
The following test results have been obtained using a system with a frequency converter, a screened control cable, a control
box with potentiometer, as well as a compressor screened cable.
RFI
Filter
Type
Conduct emission. Maximum shielded cable length [m] Radiated emission
Industrial environment
Housing, trades and light
industries
Industrial
environment
Housing, trades and
light industries
EN 55011 Class A2 EN 55011 Class A1 EN 55011 Class B EN 55011 Class A1 EN 55011 Class B
Without
external
filter
With
external
filter
Without
external
filter
With
external
filter
Without
external
filter
With
external
filter
Without
external
filter
With
external
filter
Without
external
filter
With
external
filter
H4 RFI filter (Class A1)
CDS
803
IP20
25 50 20 Yes Yes No
Table 1.19 Test Results
1.7.4
General Specifications
Protection and features
•
Electronic thermal compressor protection against overload.
•
Temperature monitoring of the heat sink ensures that the frequency converter trips in case of overtemperature.
•
The frequency converter is protected against short-circuits between compressor terminals U, V, W.
•
When a compressor phase is missing, the frequency converter trips and issues an alarm.
•
When 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, when the intermediate
circuit voltage is too low or too high.
•
The frequency converter is protected against ground faults on compressor terminals U, V, W.
Mains supply (L1, L2, L3)
Supply voltage 200-240 V ±10%
Supply voltage 380-480 V ±10%
Supply frequency 50/60 Hz
Maximum imbalance temporary between mains phases 3.0% of rated supply voltage
True power factor (λ) ≥0.9 nominal at rated load
Displacement power factor (cosφ) near unity (>0.98)
Switching on the input supply L1, L2, L3 (power-ups) Maximum 2 times/min.
Environment according to EN 60664-1 Overvoltage category III/pollution degree 2
The unit is suitable for use on a circuit capable of delivering not more than 100000 RMS symmetrical Amperes, 240/480 V
maximum.
Compressor output (U, V, W)
Output voltage 0-100% of supply voltage
Output frequency 0-200 Hz (VVC
+
), 0-400 Hz (u/f)
Switching on output Unlimited
Ramp times 0.05-3600 s
Quick Guide Quick Guide
26 Danfoss A/S © Rev. 09/2014 All rights reserved. MG18M102
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