cosPhi Monitoring / CPW-E12, 230 V AC, 1–10 A

The cosPhi monitor is used to detect underload. The threshold value and response time are adjustable. It can also be used in conjunction with a frequency converter (frequency 2 to 200 Hz). Monitoring is performed by detecting the phase shift between current and voltage. This phase angle shifts as the motor load changes. Function settings via jumpers S1 – S2 – S3: S1 – S2 open = relay de-energized in case of underload, S1 – S2 jumpered = relay energized in case of underload, S1 – S3 open = with fault memory, S1 – S3 jumpered = without fault memory. The module can be remotely unlocked via a normally open contact on S1 – S3. With the fault memory enabled (no jumper across S1–S3), the fault message remains active until it is acknowledged or until the supply voltage is interrupted.