Features of EWN-Y series

  • Feedback control is now available with digital pulse signal operation in addition to analog control.
  • Alarm output can be programmed for either normally open or normally closed operation.
  • The new EWN-Y electromagnetic pump combined with EFS flow sensor provides accurate real time control & display of dosing rate.
  • The required flow rate is simply input to the pump. Through feedback from the EFS sensor, the pump constantly adjusts its speed to maintain the set dosing rate – even under changing temperature or suction & discharge pressure conditions.
  • The EFS is mounted directly on the pump to digitally display dosing rate per minute or hour – ALL WITHOUT ANY CALIBRATION.
  • The EWN-Y gives a proportional 4-20mA output signal of dosing rate and displays operating history such as total flow volume and power-on time.

Specifications of pump

Discharge capacity range 38 – 420 mL/min
Max. discharge pressure 0.2 – 1.0 MPa
Main materials PVC, PTFE
Stroke rate 1 – 360 spm
Liquid temperature range 0 – 40°C
Viscous liquid Please contact us for details.

Specifications of controller

Operation mode MAN control Operation at MAN speed 0.1 – 100.0% (1 – 360 spm)
Feedback control 0.1 – 999.9 mL/min, 0.001 – 59.994 L/H, 0.001 – 15.828 GPH
EXT control ANA.R (analogue rigid) 4 – 20, 20 – 4, 0 – 20, 20 – 0 mA (proportional operation with stroke rate)
ANA.V (analogue variable) 2 point setting (set point 1 and 2, flow rate or stroke rate)
BATCH (batch operation) 0.1 – 99999.9 mL, 0.001 – 99.999 L, 0.001 – 26.385 G
PLS (pulse operation) 2 point setting (set point 1 and 2, flow rate or stroke rate)
Input Buffer pulse No voltage contact or open collector
Analogue 0 – 20 mADC (input resistance 220 Ω)
STOP/Pre-STOP (level sensor) No voltage contact or open collector
AUX No voltage contact or open collector
Interlock No voltage contact or open collector
Batch Start/Stop No voltage contact or open collector
Pulse No voltage contact or open collector
Output OUT1 No voltage contact (mechanical relay) 250 VAC at 3A (resistance load), Enable or disable the alarms of STOP, Pre-STOP, Interlock, Batch, Out of measurement and Poor flow
OUT2 No voltage contact (photoMOS) 24 VAC/DC at 0.1 A, Enable or disable the alarms of STOP, Pre-STOP, Interlock, Batch, Out of measurement and Poor flow or Synchronous output (sensor/pump)
Analogue 4 – 20 mADC (The max. load resistance is 500 Ω)
Buffer memory Nonvolatile memory
Power voltage 100 – 240 VAC 50/60 Hz

 

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