Drawdown Feature (Dip Sw2 - Position 5) - Franklin Electric MONODRIVE UTILITY Manual Del Usuario

Pressure Transducer: When using a 4-20 mA pressure transducer, the desired system
pressure is set by using the pressure setpoint adjustment knob. The knob is factory set to
50% of the transducer range and is adjustable from 5% to 95% in 5% increments. This
allows any range of pressure transducer to be used. Refer to the indicator lines surround-
ing the switch and the corresponding legend printed on the shield when setting the
desired pressure setpoint.
Refer to the table below for percentage to PSI conversions for popular transducer ranges.
The pressure setpoint must be adjusted with the drive powered OFF. The new
setting will not take effect until the drive power is cycled.
NOTE: This knob is only compatible with an optional 4-20 mA pressure
transducer. A pressure transducer must be installed in the system, and DIP SW2
Position 1 must be in the XDCR (up) position.
Drawdown Feature (DIP SW2 – Position 5)
When using a pressure transducer, an optional "cut-in" pressure can be set to
allow for more water to be drawn from the tank. For example, a system setpoint
pressure of 50 PSI and a cut-in pressure of 30 PSI would cause the drive to
maintain system pressure at 50 PSI when running; however when the system is
idle, the drive will not start the motor until the system pressure drops below 30
PSI.
The default cut-in pressure is 5% of transducer range below the system pressure
setpoint. Setting DIP SW2 Position 5 in the DD (up) position will change the cut-
in pressure to 20% below the system pressure setpoint.
IMPORTANT: Pressure tank pre-charge should be less than the cut-in pressure
when drawdown is enabled to prevent emptying the pressure tank.
INSTALLATION AND SETUP
Drive Configuration
Transducer Range
%
100 120 150
5 5 6 7 10
10 10 12 15 20
15 18 22 30
15
20 20 24 30 40
25 25 30 37 50
30 30 36 45 60
35 35 42 52 70
40 48 60 80
40
45 45 54 67 90
50 50 60 75 100
55 55 66 82 110
60 60 72 90 120
65 65 78 97 130
70 70 84 105 140
75 75 90 112 150
80 80 96 120 160
85 85 102 127 170
90 90 108 135 180
95 114 142 190
95
200
23