KDA 3.1-100-3-DQ0-W1
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The KDA 3.1-100-3-DQ0-W1 spindle drive is manufactured by Bosch Rexroth Indramat. Part of the KDA Spindle Drives series, it features single-axis operation and a resolver feedback system. The drive provides a rated output current of 100 A and uses internal air cooling. It weighs approximately 12 kg and has an IP20 protection rating.
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Product Description:
The KDA 3.1-100-3-DQ0-W1 motor drive from Rexroth Indramat is built with an integrated blower for thermal management that is powered by a supply voltage of 220 VAC. It operates with a steady output current rating of 70.0 A and its maximum load rating is 100.0 A, while it needs 300 V DC of regulated bus supply from an Indramat’s AC to DC converter.
The KDA 3.1-100-3-DQ0-W1 drive accepts a speed command input of 16.0 bits from a parallel interface at X4 terminal that enables communication and its lacks any auxiliary interfaces. Its protection class is IP-10 and its permissible humidity rating is of class F. The unit requires a mounting kit for its allowed vertical installation that weighs 1.70 kg and the drive weighs 23 kg with all the accessories including the mounting kit and an external heatsink blower. Its terminals are clearly defined for power, feedback, control and monitoring connections. The KDA drive’s X4 terminal is used for digital parallel speed and position commands, X3 terminal is dedicated for motor feedback connection, X5 terminal supports a 1 Vpp sinusoidal encoder for auxiliary feedback, the X2 terminal connects to the CNC interface for control signals, X11 terminal provides a ready contact output and the X12 terminal is for motor NTC thermistor monitoring.
The KDA 3.1-100-3-DQ0-W1 drive provides dedicated terminals for supply connections of blower bus and its motor powering terminal points are A1, A2, A3 for phases, along with L+, L− for the DC bus. Its control bus consumption is 1.40 A from a 24.0 V source supply and 0.160 A of measuring current for internal electronics circuitry from a 15 V source. This drive is engineered for spindle tasks and it allows straightforward integration with machines.
Frequently Asked Questions about KDA 3.1-100-3-DQ0-W1:
Q: How does the integrated blower of the KDA 3.1-100-3-DQ0-W1 improve performance?
A: The built-in blower actively cools the drive’s heat-generating components to maintain optimal operating temperatures. This ensures continued 100 A peak load performance and prolongs component lifespan.
Q: Why is the 300 V DC bus voltage important in the KDA 3.1-100-3-DQ0-W1?
A: A stable 300 V DC bus provides sufficient voltage headroom for dynamic spindle acceleration and torque demands. It ensures the drive maintains performance under varying load without voltage drop.
Q: What benefit does the 16-bit parallel speed input on X4 provide?
A: The 16-bit resolution enables fine-grained control of spindle speed for precise motion applications. It minimizes quantization error and improves smoothness in high-speed CNC operations.
Q: How does the thermistor monitoring on X12 enhance safety in the KDA 3.1-100-3-DQ0-W1?
A: The X12 NTC thermistor terminal monitors motor temperature in real time, enabling overheat protection. If thresholds are exceeded, the drive can shut down to prevent damage.
Q: What is the mounting requirement for the KDA 3.1-100-3-DQ0-W1?
A: The drive must be installed vertically using a designated mounting kit weighing 1.7 kg to ensure proper heat dissipation and mechanical stability. This orientation facilitates effective blower airflow and thermal management.
