Tachogenerator

Self-Powered Speed Sensing

• Generates its own output voltage from shaft rotation, no auxiliary power source is required to operate the tachogenerator itself, simplifying wiring and reducing dependency on a separate supply circuit.
• Open-circuit voltage output of 10–150 mV per rpm gives a direct, linear analog signal proportional to speed.

Consistent Signal Quality Across the Full Speed Range

• Baumer's patented Longlife technique maintains top signal quality across the entire rotational speed range, rather than degrading at low or high ends of the operating window, relevant for applications that need accurate feedback whether the drive is running near standstill or at full speed.
• Linearity tolerance of 0.15% and reversal tolerance of 0.1% keep the output signal tightly correlated to actual shaft speed in both directions of rotation.

Direction Sensing Built In

• The output signal's polarity indicates the sense of rotation, so a single tachogenerator provides both speed and direction feedback without needing a separate direction sensor.

High Response Speed for Dynamic Applications

• Designed for high response speed, making it suitable for control loops that need to react quickly to changes in shaft speed rather than tolerating signal lag.
• Armature-circuit time constant under 75 μs supports fast-responding speed control applications.

Robust Mechanical Construction

• Runs on its own bearings rather than relying on the driven shaft's bearings, reducing mechanical loading transferred back into the connected drive.
• Handles shaft loading up to 60 N axial and 80 N radial, with a torque range of 1.5–0 Ncm.
• Housing is aluminium die-cast with a stainless steel shaft (7–14 mm, with flange), built for durability under continuous rotation.

Wide Operating Temperature and Environmental Range

• Operating temperature range of -30°C to +130°C, covering both cold environments and hot process areas near motors or drives.
• IP55 protection as standard, with IP56 available as an option for environments with heavier exposure to dust or water jets.
• Tested for humid heat resistance (IEC 60068-2-3, Ca), vibration to 10 g (10–2000 Hz, IEC 60068-2-27), and shock to 300 g (1 ms) — covering the mechanical stress typical of industrial drive environments.

Precision Electrical Characteristics

• Calibration tolerance of 1%, temperature coefficient of 0.05%/K (open-circuit), and Isolation Class B rating give the TDP 0,2 the electrical stability needed for accurate speed feedback in closed-loop control systems.
• Rated performance of 12W at speeds above 3000 rpm.

Applications

• Analog speed feedback for motor and drive control loops – provides a direct voltage-proportional-to-speed signal for controllers that use analog tachometer feedback rather than digital pulse counting.
• Applications needing both speed and direction in one device – rotation-sense detection via output polarity removes the need for a separate direction sensor.
• Fast-responding speed control systems – high response speed and low armature-circuit time constant suit dynamic control loops where lag would degrade control quality.
• Hot or wide-temperature-range environments – the -30°C to +130°C operating range covers drives and motors that run hot in continuous operation.
• General industrial rotating machinery – motors, generators, and drive systems where a self-powered, mechanically simple speed sensor is preferable to a digital encoder and its associated signal electronics.