burkert 2875 德國比例閥

burkert 2875 德國比例閥

• Excellent range (1:200)• Very good response• Compact valve design• Orifice sizes 2 ... 8 mm• Port connection 3/8” and 1/2”The direct-acting solenoid control valve Type2875 is used as the regulating unit in controlloops. Due to an elastomeric seat seal thevalve closes tight (integrated shut-off function),up to the DN specifi c nominal pressure, seeordering chart on page 3. The plunger of thevalve is assembled frictionless, which leadsto an extraordinary adjustment characteristic.This valve is particularly suitable for demandingcontrol tasks (high control range, dry gases, etc.).Circuit function A

burkert 2875 德國比例閥

Valve control takes place through a PWM signal 1).The duty cycle of the PWM signal determinesthe coil current and hence the position of theplunger. Optionally the valve can also bedriven with DC voltage.Please note the sizing comments for such acontrol valve on page 2.

8605 PWMMicroprocessor-controlled electronics– Compensation of the solenoid coil heating by internal current control– Confi gurable ramp function– Adjustable zero point shutdown– Display and buttons– Selectable input signal– RS232 or RS485 interface (with auxiliary module)– Infi niy variable PWM frequency– Simple adaptation of the minimum and maximum current (start of opening and full opening) to the actual pressure conditionsOrdering chart Control Electronics for Solenoid Control ValvesVersionMax. coilcurrent[mA]Item no.2861, 2871 24 V DC2861, 2871 12 V DC2863, 2873 24 V DC2863, 2873 12 V DC2865, 2875 24 V DC2865, 2875 12 V DC2836 24 V DC6024 24 V DC6024 12 V DC6223 24 V DC6223 12 V DCCable plug with PG-connection 200 – 1000 178 354 x x x x xCable plug with M12-connection 200 – 1000 178 355 x x x x xCable plug with PG-connection 500 – 2000 178 356 x x x x x x xCable plug with M12-connection 500 – 2000 178 357 x x x x x x xCable plug with PG-connection without operating unit 200 – 1000 178 358 x x x x xCable plug with M12-connection without operating unit 200 – 1000 178 359 x x x x xCable plug with PG-connection without operating unit 500 – 2000 178 360 x x x x x x xCable plug with M12-connection without operating unit 500 – 2000 178 361 x x x x x x xDIN-rail 40 – 220 178 362 xDIN-rail 200 – 1000 178 363 x x x x x x xDIN-rail 500 – 2000 178 364 x x x x x x x