30
SubDrive Connect
NOTE: A 3 meter (10-foot) section of pressure sensor cable is provided with the controller, but it is
possible to use similar 0.32 mm (22 AWG) wire for distances up to 30 meters (100 feet) from the
pressure sensor. A 30 meters (100 feet) section of pressure sensor cable is available from your local
Franklin Electric distributor. Low capacitance cable must be used if the pressure sensor is being
connected with cable not supplied by Franklin Electric. Cable length longer than 30 meters (100 feet)
should not be used as it can cause the drive to operate incorrectly. (See Accessories section on page 39
for details.)
8. Verify that the SubDrive unit is properly con gured for the horsepower rating of the motor and pump
being used. (See the Pump Sizing section on page 23 for information on Drive Con guration.)
9. Verify that the SubDrive is correctly con gured for the pressure sensor type being used.
10. Replace the cover. Tighten screw to 1.1 Nm (10 in-lbs).
11. Connect the other end of the pressure sensor cable with the two spade terminals to the
pressure sensor. The connections are interchangeable.
12. Set the pressure tank pre-charge at 70% of the desired water pressure setting. To check the tank’s
pre-charge, de-pressurize the water system by opening a tap with the drive o .
(See Table 4 on page 22.)
Measure the tank pre-charge with a pressure gauge at its in ation valve and make the
necessary adjustments.
Additional Control Input/Output Wiring
Built-In Duplex Alternator
The ALTERNATOR terminal supports the built-in Duplex Alternator function of the SubDrive Connect
controllers. An appropriate Duplex Alternator communication cable should be used to make the
connection between both controllers using this terminal. This Duplex Alternator cable leads should be
wired to this terminal as follows:
(A): Black (same for both drives)
(B): Red (same for both drives)
( ): Green
Both drives using the built-in Duplex Alternator function should be wired from the same sub-panel to
ensure proper communication and operation. See the Accessories section for Duplex Alternator cable
ordering information.
Moisture Sensor
The WET SENSOR terminal supports the Franklin Electric Moisture Sensor. The Moisture Sensor leads
should be wired to this terminal as follows:
(+24): Red
( ): Black
(I+): White
(I-): Green
The (I+) and (I-) terminals accept an unpowered dry contact relay input and can be used with other
external control switches. Refer to the Advanced Setup section for more information about con guring
this input. See the Accessories section for Moisture Sensor kit ordering information.
