109-0780-4801-01 by Bosch Rexroth Indramat

The 109-0780-4801-01 belongs to the MAC AC Servo Motors series produced by Bosch Rexroth Indramat. It is a servo motor equipped with integrated feedback so that motion controllers can monitor shaft speed and position in real time for automated assembly stations, pick-and-place devices, and similar machinery. By combining tachogenerator feedback with an incremental encoder, the unit supplies both velocity and position data, allowing fast closed-loop corrections while remaining sealed to resist contamination during continuous industrial service. This arrangement helps the drive react quickly to changing load conditions during repeated acceleration, deceleration, and positioning cycles.

The housing is rated at IP65, meaning it is dust-tight and protected against low-pressure water jets; this allows mounting close to the work envelope. An optical encoder yields 1250 lines per revolution, and when decoded in quadrature this supports fine position interpolation. The encoder electronics run from a regulated 5 V ±5% supply that can be shared with common drive controllers. Inside the encoder, comparators sample sensor transitions at up to 300 kHz, so high-speed moves do not overrun the counting electronics. Signal integrity is maintained because each transition's rise or fall is limited to <=200 ns, which helps reduce jitter during transmission over longer cable runs.

The feedback channel draws only 150 mA, easing power budgeting in multi-axis systems. Line drivers present a differential high level of >=2.5 V and a low level of <=0.5 V, values that meet TTL square-wave thresholds for most motion controllers. A datum mark is provided by a single reference pulse, or 1 per revolution, so homing cycles can re-establish position without external markers. The encoder uses a standard mounting arrangement, and the incremental format supports both velocity and displacement loops. The tachogenerator outputs 1.5 V per 1000 rpm for analog speed supervision when required.