KDA 3.3-100-3-API-U1
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The KDA 3.3-100-3-API-U1 is a multistage centrifugal pump with a flow rate of 3.3 m³/h and a head of 100 meters. Manufactured by Bosch Rexroth Indramat as part of their KDA Spindle Drives series, it features a horizontal mounting design and mechanical seals. Its operating temperature range spans from -10°C to 120°C.
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Product Description:
The Rexroth Indramat’s control drive KDA 3.3-100-3-API-U1 is designed for industrial machines with an included analog ±10 V speed command interface that allows accurate spindle speed regulation. The rated current of this spindle drive is 100 A, while its continuous current capacity is 70 A and it requires a DC bus voltage of 300 V from a regulated AC to DC source.
The KDA 3.3-100-3-API-U1 drive uses forced cooling through a blower that directs air through the attached heatsink for reliable operation and the blower is rated for 115 AC at 50 to 60 Hz frequency. The drive’s control voltage requires +24 V with 1.4 A current utilization and ±15 V at 160 mA for measurement functions. It includes an auxiliary encoder input option as well for secondary motor feedback connectivity and its auxiliary interface is configured for incremental encoder output to support extended motion control requirements. The KDA 3.3 drive mounts through a provided mechanical kit in vertical position for efficient heat dissipation and its protection category is IP10 that safeguards from large objects but not from liquids. It has a weight of approx. 17.1 kg on its own, while the blower unit adds an additional 4.2 kg and the mechanical mounting kit contributes 1.7 kg.
The KDA 3.3-100-3-API-U1 drive is engineered to supports C-axis operations with high resolution control and its microcomputer-based control platform ensures precise monitoring as well as diagnostics of drive functions. The unit’s construction permits mounting in control cabinets with continuous ambient temperature range of operation from +5 to +45°C, at a maximum installation elevation of 3280 ft above sea level and its humidity conditions comply with class F according to DIN 40 040.
Frequently Asked Questions about KDA 3.3-100-3-API-U1:
Q: What is the benefit of auxiliary encoder input in this KDA 3.3-100-3-API-U1 drive?
A: It allows secondary motor feedback, improving accuracy and supporting complex motion sequences. This ensures enhanced performance in demanding machining applications.
Q: Why does the KDA 3.3 drive use a microcomputer-based control platform?
A: The microcomputer system provides real-time diagnostics and monitoring. This enhances safety while maintaining precise control of spindle speed and torque.
Q: How does forced-air cooling improve the reliability of the KDA 3.3-100-3-API-U1?
A: The blower-driven cooling prevents overheating during continuous operation. It keeps internal components stable under high current loads, ensuring long service life.
Q: What is the advantage of the ±10 V analog interface on this drive?
A: It offers precise spindle speed regulation with smooth transitions. This makes it suitable for applications where accuracy in cutting or shaping is essential.
Q: Why is vertical mounting recommended for the KDA 3.3-100-3-API-U1 drive?
A: Its vertical orientation maximizes airflow across the heatsink. This ensures efficient heat dissipation and prevents thermal overload in compact control cabinets.
