Basler Electric MOC2199 – Motor Operated Potentiometer for Remote Setpoint Control
The Basler Electric MOC2199 (part number 90‑72300‑340) is a motor‑operated potentiometer that enables remote or automatic adjustment of resistance‑based control inputs. It is commonly used to vary the setpoint of voltage regulators, speed governors, and process controllers, offering precise positioning with minimal backlash.
Design and Operation
This unit comprises a precision potentiometer driven by a reversible DC motor through a gear train. The motor responds to raise/lower signals from a remote switch, PLC, or supervisory system, rotating the potentiometer wiper to the desired position. An internal feedback potentiometer provides position sensing, while limit switches prevent over‑travel. The MOC2199 is designed for continuous duty and can be mounted directly on panel or inside control cabinets.
Resistance element: 10 kΩ (standard, linear taper)
Motor supply: 120 V AC or 24 V DC (depending on configuration)
Actuation time: 1–2 seconds for full travel (90° rotation)
Position feedback: 0–10 V DC or 4–20 mA (optional)
Mechanical travel: 300° with adjustable end stops
Operating temperature: –10 °C to +55 °C
Primary Applications
In generator excitation systems, the MOC2199 adjusts the voltage regulator’s reference input, allowing operators to change terminal voltage from a control room. It is also used in speed control loops for hydro turbines, and in industrial heating/cooling processes where a remote setpoint is required. The motorised potentiometer eliminates manual knob adjustments, enabling automated sequencing and load‑sharing schemes.
Installation and Interfacing
Mounting is via standard flange holes, with terminal connections for motor power, raise/lower commands, and potentiometer taps. The unit can be interfaced with Basler’s BE1 or SSR regulators using simple two‑wire or three‑wire control circuits. An optional clutch mechanism allows manual override if needed.
Reliability and Precision
Constructed with sealed bearings and precious‑metal wipers, the MOC2199 offers long mechanical life and stable resistance over time. Basler’s quality control ensures low torque variation and accurate positioning, critical for closed‑loop control systems. This motor‑operated potentiometer is a versatile, reliable solution for remote setpoint management.
The Basler Electric MOC2199 provides a simple yet effective means of automating setpoint adjustments, enhancing the flexibility and performance of generator and industrial control systems.
