Product Description
The SPM35-T/A is a top-tier spindle amplifier module produced originally by Bosch Rexroth under the well-known SPM inverter series. Typically, spindle amplifier modules like the SPM35-T/A are used for regulating spindle motors to ensure precise rotational speed and torque output. For highly precise systems involved in drilling, milling, turning, and machining processes, spindle drive amplifiers convert an input signal into an appropriate waveform suitable for the spindle motor. Inverters, in particular, are commonly incorporated for converting a DC signal to an AC signal. At most, the SPM35-T/A can achieve an alternating-current value of 520 volts.
Usually, spindle amplifier modules like the SPM35-T/A incorporate four main components: power electronics, control circuitry, cooling system, and feedback interface. The power electronics incorporate all circuit elements for converting the input electrical waveform. The control circuitry, on the other hand, works with the power electronics system to implement algorithms for controlling the spindle motor’s speed or torque. All spindle amplifier modules also incorporate a cooling system to dissipate heat generated during operation. Finally, some spindle amplifier modules also come with feedback interfaces to monitor the real-time position or speed of the connected spindle motor.
Bosch Rexroth’s SPM35-T/A supports three-phase input signals with a signal frequency ranging from 0 to 60 Hz. With its durable outer material, the SPM35-T/A provides some level of protection against liquids and small particulates. Based on its specifications, the SPM35-T/A has a front panel protection class of IP 54. To facilitate cooling during operation, the SPM35-T/A dissipates heat via air convection. Cooling systems employing air convection usually do not integrate axial or blower fans. For such modules, cooling proceeds naturally. Wake Industrial offers the SPM35-T/A with a lucrative product warranty claimable for one year.