RAC3.5-150-460-A01-W1-220 Bosch Rexroth Indramat
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The Bosch Rexroth Indramat RAC3.5-150-460-A01-W1-220 is an AC main spindle drive controller from the RAC Spindle Drive Controllers series. It delivers a continuous controller output of 35 kW and operates at a rated supply voltage of 460 VAC. The controller supports a control electronics voltage of 220 VAC, is designed for three-phase mains supply between 380 and 460 V at 50–60 Hz, and weighs 49 kg.
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Product Description:
The RAC3.5-150-460-A01-W1-220 spindle drive controller is produced by Bosch Rexroth Indramat within the RAC Spindle Drive Controllers series. As an AC mains spindle drive, it links the plant’s three-phase supply to the motor windings while regulating power, speed, and braking energy for machine-tool spindles and other high-inertia axes. Integrated current and voltage monitoring help the unit maintain commanded spindle speed while protecting both the controller and the connected motor during continuous machining cycles. This operating role makes it suitable for equipment that must hold stable spindle performance during changing load conditions and repeated acceleration or braking events.
Under steady conditions, the inverter delivers a continuous controller current of 92 A, providing a thermal power capability of 35 kW. When the pulse-width-modulation carrier is raised to 8 kHz, the continuous output is limited to 30 kW, and regenerative braking can dissipate 27 kW without overheating the chopper resistor. The control electronics draw auxiliary power from a dedicated 220 VAC feed that is isolated from the main bus. For short-term accelerations, the drive supplies 40 kW and can return 40 kW to the DC link during five-second decelerations. Rated operation expects a three-phase 460 VAC bus derived from a 3 x AC 380 to 460 V, 50/60 Hz mains source.
Mechanical installation is supported by an enclosure mass of 49 kg and a ventilation design that meets the IP10 protection category, so the unit is intended for installation inside a cabinet with basic shielding. The controller operates between +5 °C and +45 °C and can run to +55 °C with proportional derating, while storage is permitted from -30 °C to +85 °C. Mounting is allowed up to a maximum installation altitude of 1000 m before power reduction is necessary. Commands are received through a speed set-point interface of ±10 V, allowing compatible machine controls to issue direct analog speed commands during spindle operation.
Frequently Asked Questions about RAC3.5-150-460-A01-W1-220:
Q: What is the continuous controller current for the RAC3.5-150-460-A01-W1-220?
A: The RAC3.5-150-460-A01-W1-220 has a continuous controller current rating of 92 A, supporting high-load spindle applications.
Q: What is the continuous controller output power of the RAC3.5-150-460-A01-W1-220?
A: This drive controller can deliver a continuous output power of 35 kW during normal operation.
Q: What mains supply voltage is required for the RAC3.5-150-460-A01-W1-220?
A: The RAC3.5-150-460-A01-W1-220 operates with a main supply voltage of 3 x AC 380–460 V at 50–60 Hz, suited for industrial environments.
Q: What is the allowable operating temperature range for the RAC3.5-150-460-A01-W1-220?
A: The controller can function within an ambient temperature range of +5 to +45 °C.
Q: What type of speed set-point input does the RAC3.5-150-460-A01-W1-220 support?
A: This model features analog speed set-point input capabilities using ±10 V signals.
