Kromschroder Servo motor IC20-30Q3T 88300064

The Kromschroder IC20-30Q3T is a servo motor designed for precise rotary movement between 0 and 90 degrees. It operates on a 120 V supply voltage with a frequency range of 50–60 Hz and provides a torque of 3 Nm. The motor features a duty cycle of 100%, safety class 1, and includes voltage-free limit switches for control. It stops at its current position when power is disconnected, and its holding torque equals its torque. The device has a storage temperature range of -20 to 40 °C and weighs 1950 g.

When selecting a replacement servo motor of this type, ensure the supply voltage, frequency, torque, and control features (such as three-point step control) match the system requirements. The mounting dimensions and shaft coupling must be compatible with the existing actuator linkage. Check the cable cross-section capacity (up to 4 mm²) and line entrance configuration (3 x M20 plastic cable glands) to ensure proper electrical connection. The feedback potentiometer power rating (0.5 W) and resistance value must align with the control board specifications.

Common failure modes for this type of servo motor include loss of rotation due to worn gears or motor failure, which may cause the damper or valve to remain in a fixed position. If the limit switches malfunction, the motor may not stop at the correct endpoints, leading to incorrect air or gas flow. Condensation inside the housing can cause electrical shorts or corrosion, so check for moisture ingress. If the motor fails to respond to control signals, verify the supply voltage and wiring connections.