IWAKI EH-E, Instruction Manual

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4.External Control
4.4 Analog Mode
4.4Analog Mode. In analog mode the pump will accept a milliamp signal and produce a pump
speed proportional to the signal level received. Signal ranges of 4-20, 0-20,20-4
or 20-0 can be selected.
1.Connecting an analog signal device
Disconnect AC power to the pump. Gently spread the latches at the sides of the
terminal block cover and remove the cover. Remove the cord nut and bushing
from the terminal block cover. Remove the terminal block from the connector.
Slide the nut and bushing over the external control cable and insert the cable
through the terminal block cover. Strip 6mm' insulation from conductors and
connect the positive side to terminal 5 and the negative side to terminal 8.
2.Settings
Start with pump in the WAIT state. If it is not currently in wait, press
START/STOP once.
3-1.Set it to analog mode
Press
▲
and EXT simultaneously. The SET indicator is highlighted and DIG
(digital) or ANA (analog) will be displayed. If ANA is displayed, press
START/STOP to accept that mode. You will be returned to the WAIT state. If
DIG is displayed, press the
▼
button to change to ANA and then press
START/STOP to enter that choice. You will be returned to the WAIT state.
3-2.Set the value
To set values for analog operation press EXT and
▼
simultaneously. The
display will show 4-20,20-0,20-4 or 0-20. Press
▲
or
▼
to change the selection
to the desired signal range and response. Press START/STOP to accept the
value and return to WAIT .
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