Frequently Asked Questions

Why upgrade from 11kW to 15kW for my high-rise project?

The Drive-15KW-4 provides 22% more output current (33A vs 27A) and 24% more power capacity (21kVA vs 17kVA), enabling either heavier loads (2000kg+ vs 1600kg) or higher speeds (3.0m/s vs 2.5m/s). For mega high-rise projects 60+ floors, the 15kW ensures sufficient torque for rapid acceleration against windage and cable weight at extreme heights. The 36A input current supports continuous heavy-duty cycles without thermal derating—critical for industrial freight applications with 300+ cycles/day.

Can the 15kW handle 3.0m/s ultra-high-speed with 2000kg load?

Yes. The 33A output current at 15kW supports 3.0m/s operation with 2000kg cabins in mega high-rise applications up to 80 floors. The 21kVA power capacity provides substantial headroom for the extreme power demands of simultaneous high-speed and heavy-load operation. The closed-loop vector control maintains precise speed regulation even with cable stretch and building sway at height. For 3.5m/s+ or 2500kg+ applications, consider the 18kW (40A) or 22kW (48A) models.

Is the built-in brake sufficient for 2000kg descending from 80 floors?

The built-in 15kW brake unit handles substantial regenerative energy, but mega high-rise applications with 2000kg loads and 300m+ descent heights generate extreme regenerative power. For such applications, we recommend regenerative drive configuration or external braking resistor banks sized for your specific duty cycle. The 21kVA capacity provides power handling margin, but braking requirements depend on traffic patterns—predominant downward rush-hour traffic (office towers) requires more braking capacity than balanced traffic. Our engineers calculate exact requirements from your building height, load, speed, and traffic analysis.

How does dual CPU architecture benefit extreme-duty industrial freight?

In industrial freight applications with 300+ cycles/day, the dual CPU architecture dedicates one processor to precise motor torque control during heavy load starts (2000kg+), while the other manages safety circuits and door interlocks. This separation prevents control delays that could cause load swing or imprecise stopping with heavy goods. The anti-rollback function—critical with unbalanced industrial loads—operates independently on the safety CPU, ensuring immediate brake application if power or control anomalies occur during heavy lifting.

What encoder resolution is recommended for 3.0m/s 80-floor operation?

For 3.0m/s operation in 80-floor buildings, we recommend 4096 PPR (pulses per revolution) or higher encoder resolution via the removable PG cards. This provides the precise position feedback necessary for ±1mm floor leveling at height where cable stretch and thermal expansion affect accuracy. The 15kW drive supports SinCos 1Vpp encoders up to 8192 PPR for extreme precision applications. Lower resolutions (2048 PPR) suffice for 2.5m/s or moderate height applications. Specify your speed and building height when ordering for pre-configured PG card optimization.