SEW MOVITRAC LTP series, Руководство по эксплуатации

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Operating Instructions – MOVITRAC® LTP
3
Protection features
General specifications
3.4 Protection features
• Output short-circuit, phase-to-phase, phase-to-ground
• Output over-current
– Trip set at 175 % of rated drive current.
• Overload protection
– Drive delivers 150 % of rated motor current for 60 seconds.
• Braking transistor protected against short-circuit.
• Braking resistor overload (when enabled)
• Over-voltage trip
– Set at 123 % of drive maximum rated supply voltage.
• Under-voltage trip
• Over temperature trip
• Under temperature trip
– Drive will trip if enabled below –10 °C
• Supply phase imbalance
– A running drive will trip if there is a supply imbalance of >3 % persisting for
more than 30 seconds.
• Supply phase loss
– A running drive will trip if one phase of a 3-phase supply is lost for more than
15 seconds.
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