Daikin Proportional valves/Servo valves

Daikin Solenoid proportional pilot relief valve

Features

  • Applied for remote control operations as a pilot valve of a variable displacement piston pump or as a pilot operating type pressure control valve such as a relief valve or a reducing valve.
Direct type solenoid proportional throttle valve

Features

  • Proportional throttle switching valve to carry out feed-back control of spool position by detecting the variation of the spool with a differential transformer, as the proportional solenoid directly drives the spool.
  • A combination of a pressure compensation valve and an exclusive driver makes it possible to create a proportional flow control in high accuracy.
  • LEMS valve is stack type one and can carry out the T port ‘s meter-out control in a proportional flow control system in high accuracy by means of attaching stack under a solenoid operated valve in combination of an exclusive reducing type pressure compensation valve.
Daikin Stack type reducing type pressure compensation valve (LEMS use)

Features

  • The combination use with LEMS valve enables proportional flow rate control with reducing type pressure compensation.
Daikin Direct type solenoid proportional switching valve

Features

  • The valve switching four directions enables the control of the actuator’s round process.
  • This valve itself can be used for a shock-less switching valve.
  • With a differential transformer
    • A proportional solenoid directly drives a spool and detects the variation of the position, carrying out a feed back control for the spool position.
    • The combination of a pressure compensation valve and an exclusive driver makes it possible to do a proportional flow control in high accuracy.
  • Without differential transformer
    • Mounts an exclusive driver (ZDN-2-10).
    • The combination with a pressure compensation valve enables it to use as an easy type flow control valve.
Daikin Stack type pressure compensation valve (KSP use)

Features

  • The combination with KPS vale enables it to carry out a proportional flow control with pressure compensation.
Daikin Direct type servo valve

Features

  • In combination with exclusive driver, it can have a high response and suits the closed loop controls of position , speed and pressure for a main machine’s actuator. (Frequency response: 130Hz/-3dB±10% amplitude)
  • Since a proportional solenoid directly drives a spool, the leak volume can keep a least value compared to a nozzle flapper type servo valve.
  • When an exclusive driver is used, it becomes all port block (fail safefunction) at power off.
Daikin Solenoid pilot type servo valve

Features

  • Suits a closed loop control of position, speed and pressure of main machine’s actuator.
  • As a pilot valve adopts large sized orifice nozzle for a nozzle flapper type,anti-contaminant characteristics is strengthen.
  • A driver is mounted on a valve.
  • As option with pressure sensor is provided, closed loop control can be easily performed.
Daikin Solenoid controlled proportional valve

Features

  • A stack type control valve with proportional flow characteristics of a pressure compensation type. The current and flow rate are proportional in spite of the load size.
  • Possible to make a structure of a power-much circuit outputting the required pressure and flow rate in combination of variable volume type pumps.
  • Possible to control the flow rate at A port and B port individually.
  • As assembled in the order of an inlet valve block and a solenoid proportional valve, each valve block is mounted on a manifold block. The manifold block and sub-block are separated by every valve, and tightened with the through bolts together with the end plate corresponding to the required switching valve’s linkage number (Max. eight links).—(Block-built system).
Daikin Open loop control method driver (AC use)

Features

  • Controls a solenoid proportional control valve of a open loop control system to an optimum condition.
  • Owing to the constant-current characteristics, the variations of supply voltage and of output current by a solenoid temperature rise rarely happen.
  • The output radio wave corrugation (dither frequency , amplitude) is set up so that hysteresis of a solenoid proportional control valve and a resolution power can get the best values.
  • Since the current is controlled by PWM(pulse width modulation) method, heat generation from driver is restrained to be the smallest.
  • As the function (response time adjusting function) to vary the output current slowly for the variation of step like command input is provided, it enables the oil output to vary in shock-less. (for either build-up or pull-down process, each process can be independently adjusted).
Daikin Open loop control method driver (for DC current)

Features

  • Controls a solenoid proportional control valve of a open loop control system to an optimum condition.
  • Owing to the constant-current characteristics, the variations of supply voltage and of output current by a solenoid temperature rise rarely happen.
  • The output radio wave corrugation (dither frequency , amplitude) is set up so that hysteresis of a solenoid proportional control valve and a resolution power can get the best values.
  • Since the current is controlled by PWM (pulse width modulation) method, heat generation from driver is restrained to be the smallest.
  • As the function (response time adjusting function) to vary the output current slowly for the variation of step like command input is provided, it enables the oil output to vary in shock-less. (for either build-up or pull-down process, each process can be independently adjusted).
Daikin Minor loop control method driver (for AC current)

Features

  • Controls LEM* valve which detects the spool position by a differential transformer to carry out a feed back control (minor feed back).
  • Owing to the constant-current characteristics, the variations of supply voltage and of output current by a solenoid temperature rise rarely happen.
  • The output radio wave corrugation (dither frequency , amplitude) is set up so that hysteresis of a solenoid proportional control valve and a resolution power can get the best values.
  • Since the current is controlled by PWM (pulse width modulation) method, heat generation from driver is restrained to be the smallest.
Daikin DIN terminal type driver for KSP-G02

Features

  • Controls KSP-G02 in optimum conditions.
  • Owing to the constant-current characteristics, the variations of supply voltage and of output current by a solenoid temperature rise rarely happen.
  • The output radio wave corrugation (dither frequency , amplitude) is set up so that hysteresis of a solenoid proportional control valve and a resolution power can get the best values.
  • Since the current is controlled by PWM (pulse width modulation) method, heat generation from driver is restrained to be the smallest.
  • As the function (response time adjusting function) to vary the output current slowly for the variation of step like command input is provided, it enables the oil output to vary in shock-less. (for either build-up or pull-down process, each process can be independently adjusted).
Daikin Open loop control method Euro-card type driver

Features

  • Controls KSP valve of an open loop control system to optimum conditions.
  • Owing to the constant-current characteristics, the variations of supply voltage and of output current by a solenoid temperature rise rarely happen.
  • The output radio wave corrugation (dither frequency, amplitude) is set up so that hysteresis of a solenoid proportional control valve and a resolution power can get the best values.
  • Since the current is controlled by PWM (pulse width modulation) method, heat generation from driver is restrained to be the smallest.
  • As the function (response time adjusting function) to vary the output current slowly for the variation of step like command input is provided, it enables the oil output to vary in shock-less. (for either build-up or pull-down process, each process can be independently adjusted).
Daikin Miner loop control method Euro-card type driver

Features

  • Controls LEM valve which detects the spool position by a differential transformer to carry out a feed back control (minor feed back).
  • Owing to the constant-current characteristics, the variations of supply voltage and of output current by a solenoid temperature rise rarely happen.
  • The output radio wave corrugation (dither frequency , amplitude) is set up so that hysteresis of a solenoid proportional control valve and a resolution power can get the best values.
  • Since the current is controlled by PWM (pulse width modulation) method, heat generation from driver is restrained to be the smallest.
  • As the function (response time adjusting function) to vary the output current slowly for the variation of step like command input is provided, it enables the oil output to vary in shock-less. (for either build-up or pull-down process, each process can be independently adjusted).