TDA 1.3-100-3-D0I Bosch Rexroth Indramat
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MPN: R911264221
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The Bosch Rexroth Indramat TDA 1.3-100-3-D0I is part of the TDA Main Spindle Controllers series and weighs 10.5 kilograms. It offers a rated current of 100 amps and is designed for vertical mounting with a cooling principle using air inside the control cabinet. This controller operates at a DC link voltage of 300 VDC and features digital 16-bit parallel speed command input through a 25-pin connector.
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Product Description:
The TDA 1.3-100-3-D0I is a main spindle controller produced by Bosch Rexroth Indramat within the TDA Main Spindle Controllers series. Designed for machine-tool centers, the unit supplies regulated three-phase power to synchronous or induction spindle motors and accepts digital speed commands from an external CNC. By integrating drive electronics, velocity control, and position feedback handling, it simplifies spindle integration in automated machining lines, supporting coordinated motion such as C-axis indexing. This arrangement allows the spindle axis to operate as part of a larger motion system without requiring separate external control hardware for basic speed regulation and orientation functions.
Its power stage is sized for a peak or rated current of 100 A, while the continuous effective current is limited to 70 A to prevent thermal overload during prolonged cutting cycles. Internally, the drive operates from a DC link that is held at 300 VDC, produced by the associated supply module. Control electronics draw only 1.4 A from a logic supply of 24 VDC, segregating low-level circuits from the power section. Speed references arrive through a 25-pin connector as a digital 16-bit parallel word; an incremental encoder output is available for downstream motion control, but no additional encoder input is provided. This separation of command, logic, and power functions helps the controller maintain stable spindle response during acceleration, deceleration, and orienting sequences in metal-cutting applications.
In closed-loop spindle orienting tasks, the controller resolves the C-axis at 360000 Incr/Rev, enabling fine positioning for tool change and tapping. The selected speed command format is Digital (16-Bit Parallel), so numerical accuracy matches the mechanical resolution. For cabinet integration, the unit mounts in a vertical orientation, relies on air circulating inside the control cabinet for cooling, and carries a protection rating of IP10. Its design meets Humidity Class F and can be installed up to 1000 m above sea level without derating. Total mass is 10.5 kg, limiting stress on DIN rails and slide-in racks. The vertical layout also supports a straightforward airflow path inside the enclosure, which helps the controller dissipate heat during sustained spindle duty.
