Kromschroder Actuator 88300241

The Kromschroder Actuator 88300241 is a programmable actuator for precise rotary movement between 0 and 90 degrees, used to regulate flows in gas-consuming installations and flue gas ducts. It operates with a supply voltage of 100–230 V AC, 50–60 Hz, and provides a torque of 2 Nm. The actuator features a 4–20 mA analogue input, a feedback potentiometer of 1000 ohms with a power rating of 0.25 W, and two digital outputs as relay change-over contacts. It has a runtime adjustable from 4.5 to 75 seconds, a duty cycle of 100%, and protection class IP65. The device is configured via BCSoft software and complies with EU directives 2014/35/EU and 2014/30/EU, as well as safety standard DIN EN 60730.

When selecting a replacement actuator of this type, ensure the supply voltage, frequency, torque, and control signal (e.g., 4–20 mA) match the existing system requirements. Verify the mounting dimensions and shaft coupling to fit the valve or damper. The actuator's runtime and parameter set must be compatible with the application; programming may be required via BCSoft. Check the electrical connections, including cable cross-section up to 4 mm² and line entrance size (3 x M20 glands).

Common failures of such actuators include loss of torque or holding torque, erratic movement, or no response to control signals. The equipment may show incorrect positioning, flashing LED indicating faults, or the valve may not reach its set points. Check the feedback potentiometer for wear or open circuit, verify the supply voltage and wiring, and inspect the digital outputs for relay contact issues. Condensation inside the housing can cause electrical failures, so ensure the enclosure remains sealed.