Franklin Electric SUBDRIVE UTILITY Manual De Instrucciones página 26

INSTALLATION AND SETUP
Drive Configuration
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 surrounding 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 a 4-20 mA pressure transducer. A
pressure transducer must be installed in the system, and DIP SW1 Position 5
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.
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Transducer Range
%
100 120 150 200
5 5 6 7 10
10 10 12 15 20
15 18 22 30
15
20 24 30 40
20
25 25 30 37 50
30 30 36 45 60
35 35 42 52 70
40 48 60 80
40
45 54 67 90
45
50 50 60 75 100
55 55 66 82 110
60 60 72 90 120
65 78 97 130
65
70 84 105 140
70
75 75 90 112 150
80 80 96 120 160
85 85 102 127 170
90 90 108 135 180
95 114 142 190
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