KDA 3.1-150-3-L0D-W1
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The KDA 3.1-150-3-L0D-W1 is a servo drive manufactured by Bosch Rexroth Indramat. Part of the KDA Spindle Drives series, it delivers a rated output current of 150 A and utilizes internal fan cooling. The drive features a resolver feedback option and is compatible with Indramat AC Servo Motors.
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Product Description:
The Spindle Drive KDA 3.1-150-3-L0D-W1 by Bosch Rexroth operates using a 300 VDC bus voltage. It supplies a rated output of 150 A for use in motor control systems. The spindle drive supports both 2AD and 1MB spindle motors. It is compatible with asynchronous and frameless motor types across various setups in industrial automation.
The continuous output current of the KDA 3.1-150-3-L0D-W1 spindle drive is 90 A to allow stable performance under load. The control bus uses a +24V supply with a current draw of 1.6 A. A ±15V measuring voltage is provided with 160 mA current draw for sensor integration. The supported motor power reaches up to 22 kW, depending on load requirements. An integrated AS3 module stores both machine-specific and drive-specific parameters. These stored parameters help synchronize replacements or upgrades without reconfiguration. The KDA 3.1-150-3-L0D-W1 spindle drive enables low-speed control starting from 0.0005 rpm minimum. Analog C-axis resolution reaches precision up to 1/360,000 revolutions. The SERCOS fiber-optic interface enhances motion resolution to 1/2,000,000 revolutions. The unit supports spindle control, precise positioning, and direct C-axis control features. Thermistor-based monitoring is included to protect against motor thermal overloads. A 220V AC supply is needed to operate the external blower for the heatsink. A 115V AC blower version is available with the U1 variant of the drive.
The KDA 3.1-150-3-L0D-W1 spindle drive must be mounted vertically to allow proper airflow and safety compliance. Cutouts and ducting are necessary for efficient air discharge from the cabinet. Grounding to the supply module is required using a 10 mm² cable. The unit operates within +5°C to +45°C without requiring performance derating. A mechanical mounting kit (M1-KD) is needed to secure the unit inside an enclosure. With reduced power, operation is allowed up to +55°C maximum ambient temperature.
Frequently Asked Questions about KDA 3.1-150-3-L0D-W1:
Q: How does KDA 3.1-150-3-L0D-W1 spindle drive support multi-motor compatibility?
A: The KDA 3.1-150-3-L0D-W1 spindle drive accommodates both 2AD and 1MB motor types through adaptable current control. This allows mixed configurations without firmware changes.
Q: What are the benefits of the AS3 module in KDA 3.1-150-3-L0D-W1 spindle drive?
A: The KDA 3.1-150-3-L0D-W1 spindle drive’s AS3 module stores configuration data internally. This simplifies commissioning, especially during hardware swaps or unplanned replacements.
Q: Why is thermistor monitoring included in KDA 3.1-150-3-L0D-W1 spindle drive?
A: The KDA 3.1-150-3-L0D-W1 spindle drive uses a thermistor input to detect motor heat rise in real-time. This prevents insulation failure and unplanned drive shutdown.
Q: How does SERCOS improve motion control in KDA 3.1-150-3-L0D-W1 spindle drive?
A: The KDA 3.1-150-3-L0D-W1 spindle drive uses SERCOS to achieve sub-micron-level C-axis resolution. This digital interface reduces jitter in rotary tool applications.
Q: What are the grounding considerations for KDA 3.1-150-3-L0D-W1 spindle drive?
A: The KDA 3.1-150-3-L0D-W1 spindle drive requires a 10 mm² ground cable to the supply module. This minimizes impedance and improves EMC compliance under dynamic load.
