Product Description:

The TTR-2952-4001-C-49-C is a frameless torque motor manufactured by Kollmorgen and supplied under the Inland Direct Drive Motors series. As a direct-drive unit, the rotor couples directly to the load, eliminating the need for gear reduction and minimizing backlash in positioning tasks. The motor is intended for industrial automation axes that require precise speed regulation and responsive servo control in semiconductor tools, indexing tables, and electronic assembly platforms. Its frameless design allows the rotor and stator to be integrated into the machine structure, reducing the number of intermediate mechanical components.

This model maintains an angular positioning tolerance of ±10 arc-minutes, allowing repeatable shaft alignment when used with its resolver feedback. Its field coils accept an excitation frequency of 400 Hz, which supports responsive control while keeping iron losses manageable. The drive electronics must deliver 12.0 Vrms to the stator, and this moderate voltage reduces insulation stress in low-voltage control systems. When energized, the winding draws 10.9 mA, keeping the thermal load on the motor laminations low during continuous operation. A transformation ratio of 1.75 V/V converts rotor displacement into a corresponding resolver output, providing predictable analog feedback scaling for the servo amplifier. The coils use a stator winding configuration, so the assembly does not require brushes or slip rings that can wear during operation.

Rotor position is detected by an 11BRW-300-B-1 resolver, which supplies sinusoidal reference and quadrature signals for closed-loop position control. The resolver has a null amplitude of 30 mV, limiting residual output near the electrical zero position. Its secondary signal follows the primary signal with a calibrated phase shift of 12°, allowing the controller to calculate the rotor angle throughout a complete rotation. The resolver uses a single-speed arrangement, so one electrical cycle corresponds to one mechanical revolution. This relationship simplifies angle interpretation within the servo controller and avoids the additional calculations associated with multispeed resolver feedback. The analog output can be processed continuously, allowing the control system to monitor rotor movement without relying on mechanical contacts.