Function | Description | Type |
|---|---|---|
|
3-position control | A 3-position signal controls the actuator via connection terminals Y1 or Y2. The desired position is transmitted to the valve. | SAV31.., SAV81.. |
Modulating control | The positioning signal range (DC 0...10 V / DC 4...20 mA / 0...1000 Ω) corresponds to the positioning range (closed...open, or 0…100% stroke) in a linear manner. | SAV61.. |
Positioning signal and characteristic changeover | Setting with DIL switch. Factory setting:
| |
Position feedback U | Signal returned to acquire the position via input. | SAV61.., SAV61../MO |
Forced control (Z-mode) | Forced control helps override automatic mode and is implemented via higher control. | |
Calibration | Carry out during initial commissioning. The actuator drives to the top or bottom end position; the measured values are saved. | |
Valve seat detection | The actuators have power-dependent seat detection. After calibration, the exact valve stroke is stored in the actuator's memory. | |
Foreign body detection | After clogging is detected, three attempts are made to get past clogging. If unsuccessful, the actuator continues to follow the positioning signal only within a limited range, and the LED flashes red. | |
Modbus RTU (RS-485), not galvanically isolated | Setpoint 0...100 % valve setting Actual value 0..100% for valve position Override control Open / Close / Min / Max / Stop Setpoint monitoring and backup mode | SAV61../MO |