5220110 TURCK | Alldatasheet
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Edition • 2023-07-21T15:54:12+02:00 Level controller 1-channel MS91-12-R (UNT) The 1-channel level control MS91-12-R mon- itors and regulates conductive liquid levels (II). As a dual level regulator, it can be used to control pumps and solenoid valves (I). As monitoring device it is designed for run-dry or over flow protection. The sensitivity (liquid resistance) is adjustable between 0.1 … 100 kò. One of the four sen- sitivity ranges is selected by the terminal con- figuration. Fine adjustment of the switch point within the selected range is achieved with a front cover potentiometer. The level controller not only provides optimum reliability in differ- entiating liquids, it is also suited for the distinc- tion between foam and liquid . The adjustable switch-on and switch-off delay is very important for turbulent liquid levels. A delay time between 0.1 … 15 s can be set via the potentiometer on the front. Two parallely operating relay outputs with one changover contact each are provided to out- put the switching commands. The output con- figuration of both outputs can be changed from NC mode (no bridge between terminal 15/16) to NO mode (with bridge between ter- minals 15/16). The switching status is indicated by a yellow LED. The switching status of the output is indicated by a yellow LED and operational readiness by a green LED. ■ Output: 2 relays with changeover contact ■ Responsivity: 0.2…100 kò ■ Removable terminal blocks ■ Switching of electrodes via auxiliary relay ■ Switch-on/off delay adjustable 0.1…15 s ■ Reliable distinction between foam and liq- uid ■ Galvanic isolation of input circuits, output circuits and power supply
Edition • 2023-07-21T15:54:12+02:00 Type MS91-12-R ID 5220110 Nominal voltage Universal voltage supply unit Operating voltage 20…250 VAC Frequency 40…70 Hz Operating voltage 20…250 VDC Power consumption ð 3 W Input circuits 2 electrodes or alternatively 3 electrodes Schaltpunkt 0,1-100 kò Probe voltage 5 Vpp/100 Hz (triangle) Schaltschwelle 0,1...1 kò Schaltschwelle 0,5...5 kò Schaltschwelle 2…20 kò Schaltschwelle 10...100 kò Einschaltverzögerung 0,1...15s Ausschaltverzögerung 0,1...15s Hysterese 10 % Output circuits Output circuits (digital) 2 x relays (change-over) Output switching voltage relay ð 60 VDC / ð 250 VAC Switching current per output ð 4 A Switching capacity per output ð 1000 VA/60 W Switching frequency ð 10 Hz Galvanic isolation Test voltage 2.5 kV RMS Displays/Operating elements Switching state Yellow Mechanical data Protection class IP20 Ambient temperature -25…+60 °C Dimensions 75 x 50 x 110 mm Weight 246 g Mounting instructions DIN rail (NS35) or panel Housing material Polycarbonate/ABS Electrical connection 2 × 8-pin removable terminal blocks, reverse polarity protected, screw terminal Terminal cross-section 1 × 2.5 mm²/2 × 1.5 mm² Dimensions Output relay – Load curve Output relay – Electrical lifetime