KDA 3.3-100-3-AY0-W1
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The KDA 3.3-100-3-AY0-W1 is a spindle drive with a rated motor power of 3.3 kVA and a weight of approximately 9.5 kg. Manufactured by Bosch Rexroth Indramat as part of the KDA Spindle Drives series, it features a rated supply voltage of 3 × 380...480 V AC. This drive supports both synchronous and asynchronous 3-phase motors and includes encoder feed options.
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Product Description:
The KDA 3.3-100-3-AY0-W1 is a motor control drive from Rexroth Indramat that is designed to tolerate a peak load of 100 A. It comes with a protection class of IP10 in accordance with DIN 40 050 that allows installation in controlled ambient cabinets at a maximum installation height of 1000 meters without derating.
The KDA 3.3-100-3-AY0-W1 drive offers no auxiliary interface but includes an auxiliary encoder input for synchronous or spindle feedback and its speed command input is analog that accepts ±10 V signals. It manages cooling with a forced air blower that is mounted to the external heatsink and it operates with 220 V AC at 50/60 hertz. Its electrical data is fixed by design and its continuous current rating is 70 A, while its DC bus voltage is 300 V. The KDA 3 drive consumes 1.4 A from 24 V supply for control functions and draws 160 mA from 15 V as a measuring supply. Its terminal designations are clearly defined, X8 is the motor power connector with A1, A2, A3, L+ and L–, X2 is the 37-pin control input with analog command and status signals. The X3 is a 15-pin motor feedback input, X4 is the speed command input in analog form, X5 is provided for auxiliary encoder connections, X11 for ready contact output Bb and X12 is used for the motor thermistor input, while the blower unit connects at X13 and X14 terminals.
The KDA 3.3-100-3-AY0-W1 drive works under specific environmental ratings of class F humidity and its storage range is -30 to +85 °C, while its continuous operating thermal range is up to +45 °C and supports derated output data up to +55 °C. The drive comes with AS3 module that stores parameters and the operating software to ensure parameter retention during service or drive exchange.
Frequently Asked Questions about KDA 3.3-100-3-AY0-W1:
Q: Why was ±10 V chosen for the speed command in the KDA 3.3-100-3-AY0-W1?
A: The ±10 V is a common industrial standard for analog speed control, enabling compatibility with PLCs and analog controllers. This ensures seamless integration into existing systems.
Q: What advantage does the 300 V DC bus voltage provide in the KDA 3.3-100-3-AY0-W1?
A: A 300 V DC bus allows fast energy handling and stable torque for dynamic motor responses. It supports high peak currents like the 100 A tolerance with lower voltage fluctuations.
Q: How does the AS3 module benefit drive servicing in the KDA 3.3-100-3-AY0-W1?
A: The AS3 saves parameters and firmware, enabling quick swap-out without reconfiguration. This minimizes downtime during maintenance or drive replacement.
Q: What’s the significance of the drive drawing 1.4 A from 24 V and 160 mA from 15 V?
A: These supply currents support onboard logic and sensors with minimal power overhead. It enables efficient control and measurement without significant auxiliary power needs.
Q: How does the operating thermal derating to +55 °C affect performance?
A: It ensures the drive maintains a 70 A continuous rating even under elevated temperatures up to +55 °C with reduced output. This allows safe operation in warmer ambient conditions.
