Danfoss VLT 2800 Series Operating Instructions Manual page 78

Control characteristics:
Frequency range .......................................................................................................... 0.2 - 132 Hz, 1 - 1000 Hz
Resolution of output frequency ...................................................................................... 0.013 Hz, 0.2 - 1000 Hz
Repeat accuracy of Precise start/stop(terminals 18, 19) ................................................................ ≤ ± 0.5 msec
System response time (terminals 18, 19, 27, 29, 33) ....................................................................... ≤ 26.6 msec
Speed control range (open loop) ............................................................................... 1:15 of synchronous speed
Speed control range (closed loop) .......................................................................... 1:120 of synchronous speed
Speed accuracy (open loop) .................................................................... 90 - 3600 rpm: Max. error of ±23 rpm
Speed accuracy (closed loop) ................................................................ 30 - 3600 rpm: Max. error of ±7.5 rpm
All control characteristics are based on a 4-pole asynchronous motor
Surroundings:
Enclosure ...................................................................................................................................................... IP 20
Enclosure with options ............................................................................................................................. NEMA 1
Vibration test ................................................................................................................................................. 0.7 g
Max. relative humidity ................................................................................................ 5% - 85% during operation
Ambient temperature ......................................................................... Max. 45
Derating for high ambient temperature, see special conditions in the Design Guide
Min. ambient temperature during full-scale operation ................................................................................... 0
Min. ambient temperature at reduced performance .................................................................................. - 10
Temperature during storage/transport .......................................................................................... -25 - +65/70
Max. altitude above sea level ................................................................................................................... 1000 m
Derating for high air pressure, see special conditions in the Design Guide
EMC standards, Emission .......................................................................... EN 50081-2, EN 61800-3, EN 55011
EMC standards, Immunity .... EN 50082-1/2, EN 61000-4-2, EN 61000-4-3, EN 61000-4-4, EN 61000-4-5, EN
See section on special conditions in the Design Guide
Safeguards:
• Electronic thermal motor protection against overload.
• Temperature monitoring of the power module ensures that the frequency converter cuts out if the tempera-

ture reaches 100 C. An overload temperature cannot be reset until the temperature of the power module is

below 70 C.
• The frequency converter is protected against short-circuits on motor terminals U, V, W.
• If a mains phase is missing, the frequency converter will cut out.
• Monitoring of the intermediate circuit voltage ensures that the frequency converter cuts out if the intermedi-
ate circuit voltage is too low or too high.
• The frequency converter is protected against earth fault on motor terminals U, V, W.
78
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VLT 2800 Series

C (24-hour average max. 40
MG.28.A5.02 - VLT is a registered Danfoss trade mark

C)

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61000-4-6, EN 61800-3