Microprocessor phase sequence and phase failure sensor CKF-B-TRMS

Phase sequence and phase failure sensor – reliable motor protection

This microprocessor-based sensor, model CKF-B-TRMS, is a key device for protecting three-phase powered electric motors. Its function is to monitor phase sequence, detect phase loss, and control voltage asymmetry. This minimizes the risk of motor damage and ensures its proper operation. DIN rail mounting simplifies integration with existing electrical installations.

Functionality and application

The CKF-B-TRMS sensor is suitable for applications requiring reliable protection against the effects of incorrect power supply. The use of this device is particularly important in places where motor failure can lead to production downtime or significant financial losses. Thanks to the phase sequence control function, it prevents the motor from starting in an undesirable direction, which is important for many industrial applications. In the event of a problem, the sensor switches off the motor with a 4-second delay, which avoids unnecessary downtime caused by momentary voltage drops. Automatic restart occurs after the correct power parameters are restored.

Key features and benefits

• Versatile protection: Monitors phase loss, voltage asymmetry, and phase sequence, providing comprehensive motor protection.
• Fast response: A 4-second shutdown delay minimizes the risk of unnecessary motor shutdown during momentary power disturbances.
• Easy installation: Mounting on a standard DIN rail (35 mm) simplifies installation and integration with existing electrical infrastructure.
• LED indicators: Two LEDs indicate correct phase sequence (green) and problem detection (red), facilitating diagnostics and rapid response to failures.
• Durable construction: A wide operating temperature range (-25°C to 40°C) guarantees reliable operation even in harsh industrial conditions.
• Safety: Contact separation provides additional safety for the electrical installation.
• Suitable for cooperation with various loads: The maximum load current is 10A, allowing it to be used with various types of motors and devices.
• Screw terminals: Ensure a secure and durable connection of wires with a cross-section of up to 4 mm².

This device not only protects the motor from damage but also helps maintain production continuity and minimize repair costs. Thanks to its precise operation and ease of use, it is an ideal solution for both professional installers and end-users who care about the reliability of their devices.