Basler MOC2599 Motor Potentiometer – Remote Positioning with Precision

The Basler MOC2599 (9148100322) is a motorized potentiometer that translates electrical control signals into mechanical position changes. It is commonly used in generator control systems to remotely adjust voltage setpoints, speed governors, or other analog parameters where a physical potentiometer is required.

Design and Functionality

The unit consists of a precision linear potentiometer driven by a bi-directional DC motor via a gear train. The motor receives raise/lower commands from an external controller (e.g., PLC, auto-synchronizer) and rotates the wiper to the desired position. A built-in feedback potentiometer provides a signal proportional to the shaft angle, enabling closed-loop positioning.

Key Features

• Adjustable travel limits via mechanical stops

• Non-contacting feedback element (hall effect) for long life

• Wide supply range: 12–48 VDC for motor and feedback

• High resolution: < 0.5% of full scale

• Operating speed: 1–3 seconds for full travel

• IP40 rated enclosure, suitable for clean control panels

Electrical Specifications

• Potentiometer resistance: 1 kΩ, 5 kΩ, or 10 kΩ (factory selectable)

• Feedback output: 0–10 VDC or 4–20 mA

• Motor stall current: 1.5 A maximum

• Insulation voltage: 500 V between coil and case

Installation and Wiring

The MOC2599 is mounted via four M4 screws on a standard DIN rail or panel plate. Terminal blocks accept 12–22 AWG wires. The wiring diagram provides separate connections for motor power, feedback output, and common. It is important to observe polarity for the motor leads to ensure correct raise/lower direction.

Control Modes

The motor can be controlled by momentary pushbuttons, relay contacts, or solid-state outputs. A built-in anti-vibration circuit prevents accidental movement due to noise. The feedback signal can be used by a supervisory system to confirm position or to trim the setpoint.

Applications

Primarily used in generator voltage regulators to adjust reference voltage, in governor systems to set speed, and in industrial automation for valve positioning. It is also employed in test benches where repeatable resistance settings are required.

Maintenance

The MOC2599 is maintenance-free for its intended service life. Periodic checks of wiper resistance and feedback linearity are recommended. If the wiper becomes noisy, the potentiometer cartridge can be replaced without changing the entire unit.

Conclusion

The Basler MOC2599 Motor Potentiometer offers a reliable and precise means of remote analog control, making it a valuable component in automated power generation and industrial control systems.