MP200i Smart Positioner
1 Main Functions
The MP200i smart valve positioner can be applied to linear or rotary actuators. It is a two-wire device that the input signal of 4-20 mA DC is also used as the power supply. Additional wires are required for position feedback and switch outputs. The positioner can be configured as single-acting or double-acting.
- The travel of the actuator drives the feedback axis of the positioner and rotates the position sensor, which is converted into electrical signals.
- The input signal of 4-20 mA DC and actual position are transmitted to the microprocessor through A/D conversion. The microprocessor uses these data to calculate the position deviation and the output with an advanced PID control algorithm.
- The position controller output is used to drives an I/P module that connected to a pneumatic relay that fill air to or exhaust air from the valve actuator, causing valve to move toward the desired position.
2 Technical Parameters
- Analog input signal: 4-20 mA DC. Users can choose 4-12 mA or 12-20 mA range for split control application.
- Analog feedback signal (optional): 4-20mA DC [external 12-24V DC power supply in the loop].
- Switch output (optional): power supply voltage of 24V DC.
- Transmitter analog input signal PV (optional): 1-5V DC.
- Instrument-grade air supply: free from oil, moisture, and dust. (The maximum particle size: 5um, maximum particle density: 5mg/m3; maximum oil concentration: 1mg/m3; Dew point: 10K below ambient temperature. Supply pressure: 0.14-0.7 MPa. (Notes: not exceeding the maximum operating pressure of the actuator).
- Air consumption: < 0.04 kg/h (independent of supply pressure).
- Acting: Direct (air-to-open, signal-to-open): the input signal 4-20 mA DC corresponds to the valve position 0-100%. Reverse (air-to-close, signal-to-close): input signal 4-20 mA DC corresponds to valve position 100-0%.
- Characteristics:
- linear
- 1:25 equal percentage
- 1:50 equal percentage
- Quick-opening
- Custom (with HART option)
- Accuracy of current sampling: <0.1%.
- Valve position dead zone adjustment: 0%-5.0%.
- Valve position control cycle: 15 Ms.
- Valve cutoff low range: 0-20% (if the signal is lower than the cutoff low value, the positioner moves the actuator to the tight shutoff position.
- Environmental adaptability: Ambient temperature: - 25 ~ + 70 C (standard temperature type); - 40 ~ + 85 C (wide temperature type)
Ambient temperature: - 40 ~ + 85 C storage and transportation
Relative humidity: <90% (short time 95%) without condensation.
- Explosion-proof: Ex d II CT6 Gb.
- Housing material: Die Cast Aluminum Alloy.
- Electrical connection: NPT 1/2; PT, PF, and M threads are optional.
- Pneumatic connection: NPT 1/4; PT, PF, and M threads are optional
18) Weight: 4 kg.
19) Size: 245 *125 *153 mm.
Product Model Number
Note: Special specifications and requirements can be ordered separately