Altivar 38 - variable speed drive - user's manual
Altivar 38 - variable speed drive - user's manual
Altivar 38 - variable speed drive - user's manual
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Technical Specifications<br />
Electrical characteristics<br />
ENGLISH<br />
Power Voltage • <strong>38</strong>0 V - 10% to 460 V + 10% 3-phase<br />
supply<br />
Frequency • 50/60 Hz ± 5%<br />
Output voltage<br />
Maximum voltage equal to line supply voltage<br />
Electrical isolation<br />
Electrical isolation between power and control (inputs, outputs, power<br />
supplies)<br />
Output frequency range 0.1 to 500 Hz<br />
Switching frequency Configurable:<br />
• without derating:<br />
0.5 - 1 - 2 - 4 kHz for ATV<strong>38</strong>HU18N4 to D46N4(X) <strong>drive</strong>s<br />
0.5 - 1 - 2 kHz for ATV<strong>38</strong>HD54N4(X) to C33N4X <strong>drive</strong>s<br />
• without derating with intermittent operating cycle<br />
or with derating by one power rating in continuous operation:<br />
8 - 12 - 16 kHz for ATV<strong>38</strong>HU18N4 to D23N4 <strong>drive</strong>s<br />
8 - 12 kHz for ATV<strong>38</strong>HD25N4(X) to D46N4(X) <strong>drive</strong>s<br />
4 - 8 kHz for ATV<strong>38</strong>HD54N4(X) to D79N4(X) <strong>drive</strong>s<br />
4 kHz for ATV<strong>38</strong>HC10N4X to C33N4X <strong>drive</strong>s<br />
Speed range 1 to 10<br />
Braking torque<br />
30% of nominal motor torque without braking resistor (typical value) for low<br />
power ratings<br />
Transient overtorque 110% of nominal motor torque (typical values to ±10%) for 60 seconds<br />
Protection and safety<br />
features of <strong>drive</strong><br />
• Short-circuit protection:<br />
- between output phases<br />
- between output phases and earth<br />
- on internal supply outputs<br />
• Thermal protection against overheating and overcurrents<br />
• Supply undervoltage and overvoltage safety circuits<br />
• Loss of input phase safety circuit (avoids single-phase operation, on all 3-<br />
phase <strong>drive</strong>s)<br />
Motor protection • Thermal protection integrated in <strong>drive</strong> via continuous calculation of I 2 t<br />
taking <strong>speed</strong> into account<br />
Motor thermal state saved when the <strong>drive</strong> is switched off. This function can<br />
be modified (via the operator terminal or programming terminal or via the<br />
PC software), depending on the type of motor cooling<br />
• Protection against motor phase breaks<br />
• Protection via PTC probes with option card<br />
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