KDA 3.2-100-3-L0D-W1
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The Bosch Rexroth Indramat KDA 3.2-100-3-L0D-W1 is a spindle drive in the KDA Series with a rated power of 3.2 kW and digital control. It features air-cooling, RS232/RS485 communication interfaces, and an IP20 enclosure protection. The drive is panel-mounted, compatible with brake resistors, and weighs approximately 7 kg.
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Product Description:
The KDA 3.2-100-3-L0D-W1 is a digital main spindle drive from Bosch Rexroth. It is engineered for integration into modular drive systems and it operates on a 300 V DC bus supply. This drive interfaces with the control system through SERCOS via fiber-optic communication at the connector point X4.
The KDA 3.2-100-3-L0D-W1 drive delivers a continuous current output of 70 A to the motor and its rated peak current output reaches up to 100 A. Its power connections are made via terminals A1, A2 and A3. The drive uses a motor temperature input via thermistor at terminals T1 and T2, along with a safety grounding terminal. It manages cooling through a blower mounted on a heatsink that operates on a supply of 220 V AC. The air from blower routes through an internal air duct to the heatsink and heat is dissipated to the enclosure exterior, although adequate airflow needs to be maintained by keeping the area cleared around the drive up to 100 mm for preventing thermal shutdown. The KDA 3.2 drive does not possess analog/digital ±10 V control inputs and its speed command input is handled solely through the SERCOS protocol. It also omits the inclusion of an auxiliary encoder interface for second motor encoder input. The unit’s control and signal exchange are managed via X2, X3 and X4 interfaces. Its X3 supports motor feedback using 15-pin connector, while the X6 point provides SERCOS-compatible auxiliary interface functions.
The KDA 3.2-100-3-L0D-W1 drive supports incremental encoder output and serial diagnostics. Its power for control electronics is supplied via a 24 V DC line, while the ±15 V measuring voltage for sensors is sourced internally. The provided AS 3 programming module stores all drive-specific parameters and it supports plug-and-play replacement without reprogramming. This KDA 3.2 drive requires vertical orientation of installation and it complies with IP10 protection standard per DIN 40050.
Frequently Asked Questions about KDA 3.2-100-3-L0D-W1:
Q: How does the fiber-optic SERCOS interface on the KDA 3.2-100-3-L0D-W1 improve system performance?
A: The fiber-optic SERCOS ensures high-speed, noise-immune communication with minimal latency. This enables precise synchronization and robust control, especially in electrically noisy environments.
Q: Why is thermistor-based motor temperature monitoring used in the KDA 3.2-100-3-L0D-W1 drive?
A: A thermistor provides fast, accurate detection of temperature changes in the motor. It safeguards against overheating by enabling timely thermal protection and extending motor life.
Q: What advantage does the 220 V AC blower provide in the KDA 3.2-100-3-L0D-W1?
A: The 220 V AC blower delivers consistent airflow over the heatsink under variable ambient voltage. It ensures effective cooling and thermal stability, supporting continuous operation at rated current.
Q: What benefits arise from the drive lacking ±10 V analog inputs?
A: Its lack of analog inputs simplifies the system by relying solely on digital SERCOS commands. This reduces points of failure and ensures uniform, protocol-based control for speed and torque.
Q: What advantage does vertical mounting with grounding bolts at top provide for the KDA 3.2-100-3-L0D-W1?
A: The vertical orientation promotes natural convective airflow and effective heat dissipation. Positioning grounding bolts at the top ensures reliable earth contact and safe heat routing.
