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If only one relay output is set to pump-control mode, then simplex
control is performed. In Simplex mode only the Lead float (Dry
Contact #6) and Pumps-Off float (Dry Contact #8) are required.
Either output relay can be used in simplex mode.
How it works—Analog Level Sensor
When performing pump control with an analog level sensor, the
Lead, Lag, and Pumps-Off levels are programmed into the Skymetry
software. The unit then measures the actual level on Analog Input
#6 and turns on the appropriate relay outputs. If both outputs are
set to Pump Control mode, then alternating duplex control will be
performed. If only one output is set, then Simplex control will be
performed. The analog level sensor must be a 4–20mA transducer
that is selected and calibrated based on the depth of the well. The
specified output of the transducer must be entered into the Table
Range settings for Analog Input #6.
Installation Recommendations
Be sure to install and wire the Skymetry WTU-14 and associ-
ated equipment in accordance with all local codes and regulations.
Adhere to Standard Practice/Best Practice policies when installing
and wiring any control system. Be sure to include hand-operated
switches to disconnect power on all pumps/equipment to insure
worker safety when installing and servicing equipment.
Programming for Pump Control
To program the unit for Pump Control, click on the Outputs tab.
Chapter 6: Pump Control
55
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