IWAKI AMERICA Walchem EWN-Y Quick Start Programming Manual

Programming the EWN-Y pump for ANALOG input proportional control: ANA-R option:
This is the pump default option. One of four pre-set programs correlating to 0-100% speed can be chosen:
4-20mA, 20-4mA, 0-20mA and 20-0mA. Default is 4-20mA = 0-100% speed. (% speed is used for example
purposes. This may be SPM or a flowrate setting if those units were selected)
1. Make sure the pump is in the WAIT condition. You can do this by pressing the START/STOP key until the
pump starts pumping, then pressing it one more time.
2. Press the EXT key to get into the EXTERNAL Operation Mode.
3. Press and Hold the EXT key for about 3 seconds to get to the External Selection Menu.
4. Using the UP/DOWN arrow keys, scroll until "ANA.R" is displayed.
5. Press the EXT key again to select the desired pre-set program.
6. Use the UP/DOWN arrow keys to scroll through the four choices.
7. Once on the desired program, Press the EXT key to return back to the External Selection Menu.
8. Press the STOP/START key to back out and return to the External Operation Mode. The display should
now show "ANA.R" along the top of the display and the running average %, SPM or flowrate in the
main display.
9. The pump is now operating for External Operation Analog mode. As soon as an analog signal within the
range is put into the pump, the pump will begin operating at the corresponding speed. For example, if
4-20mA=0-100% was chosen and 12mA is provided, the pump will operate at 50% speed.
Programming the EWN-Y pump for ANALOG input proportional control: ANA-V option:
Two set points and the characteristics of the line can be programmed with a speed from 0-100% and a mA
setting of 0-20mA. Default set points are programmed for 4-20mA=0-100% speed. (% speed is used for
example purposes. This may be SPM or a flowrate setting if those units were selected)
First, the default "ANA.R" option in the EXT menu has to be changed to "ANA.V":
1. Make sure the pump is in the WAIT condition. You can do this by pressing the START/STOP key until the
pump starts pumping, then pressing it one more time.
2. Press the EXT key to get into the EXTERNAL Operation Mode.
3. Press and Hold the EXT key for about 3 seconds to get to the External Selection Menu.
4. Using the UP/DOWN arrow keys, scroll until "ANA.R" is displayed.
5. Press the EXT key to return back to the External Selection Menu.
6. Press the STOP/START key to back out and return to the External Operation Mode.
7. Press the STOP/START key again to back out and return to the WAIT mode.
8. Press and hold the EXT key for 3-4 seconds. "OUT" should appear on the display.
9. Use the UP/DOWN arrow keys to scroll until "PG.EXT" is shown in the display.
10. Press the EXT key and "ANA" should now be displayed.
11. Press the EXT key again and "ANA.R" will display.
12. Use the UP/DOWN arrow keys to change the display from "ANA.R" to "ANA.V".
EWN-Y Pump Quick-start programming guide:
Analog Input Control