KDA 2.1-150-3-API-W1
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The Bosch Rexroth Indramat KDA 2.1-150-3-API-W1 Spindle Drive is part of the KDA Spindle Drives series and features forced cooling by a heatsink blower. It operates with a rated current of 150 A and a DC bus voltage of 300 V. The drive weighs 17.4 kg and has an IP10 protection category.
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Product Description:
The KDA 2.1-150-3-API-W1 Spindle Drive is a high-performance industrial drive system with a bus voltage of 300 V DC to guarantee a safe energy supply to the internal drive electronics when in operation. Manufactured by Bosch Rexroth Indramat, it has a nominal current of 150 A to ensure stable and reliable power output when operating in high-load spindle movements.
This drive’s speed command value input has an analog ±10V interface for accurate and proportional spindle speed control, and this interface is compatible with most industrial control platforms. There is an auxiliary encoder input in this spindle drive that supports both spindle feedback and second motor feedback, increasing flexibility for dual-axis or dual-motor applications. Also, this drive has an incremental encoder output as an auxiliary interface component, through which motor position or velocity information is transmitted to external controllers. The cooling system of this drive operates through forced cooling by a heatsink blower, which ensures safe operational temperatures during full load operations. This drive’s blower unit weighs 4.2 kg; thus, it is easy to handle during installation or replacement without any need for lifting tools. The AC supply source for the heatsink blower is 220V at 50–60 Hz, consistent with common industrial power availability to ensure standard cooling performance.
The allowable ambient temperature for the KDA 2.1-150-3-API-W1 drive is 55 °C, so it has to be installed in areas where this ambient temperature is not surpassed. The KDA 2.1-150-3-API-W1 drive can be installed up to an altitude of 1000 meters above sea level without any loss of performance or de-rating of nominal values. This drive’s protection class is IP10 as per DIN 40 050, which means it is protected against solid objects greater than 50 mm but not protected against moisture. The allowed humidity class for this spindle drive is F, according to DIN 40 040, which means it can operate in conditions with medium humidity levels under standard industrial enclosures.
Frequently Asked Questions about KDA 2.1-150-3-API-W1:
Q: How does the 220V AC supply benefit the blower system in KDA 2.1-150-3-API-W1?
A: The 220V/50–60 Hz supply ensures efficient operation across standard industrial power grids. It allows stable and continuous cooling without additional converters.
Q: Why is an incremental encoder output important in spindle drives?
A: It enables external controllers to receive precise speed or position feedback. This improves synchronization and real-time process control.
Q: How does the auxiliary encoder input enhance system performance in KDA 2.1-150-3-API-W1?
A: It supports second motor feedback, allowing complex motor coordination. This improves multi-axis machine responsiveness and accuracy.
Q: What installation practices help maintain the 55°C temperature limit?
A: Adequate ventilation and spacing around the unit are essential. External cooling systems can be added in high-temperature zones.
Q: Why is Class F humidity rating significant for KDA 2.1-150-3-API-W1?
A: It permits the unit to operate in moderately humid environments. This reduces the risk of internal condensation during extended use.
