Phase Technologies 2XD Series, Руководство по эксплуатации и установке

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Basic Analog Constant Pressure Installation Procedures:
1. Install the analog pressure transducer and emergency over-pressure switch in the water line
Control Tip: Turbulence near pressure transducer can result in poor pressure control. For best
results, pressure transducers should be placed at least 6 inches away from pressure tanks, check
valves, and pipe elbows.
2. Remove protective rubber boot from the over-pressure switch, insert factory provided duplex
cable through the boot, and connect a twisted pair of wires to the normally closed (NC) and
common (C) terminals of the switch
CAUTION : The use of shielded cable is recommended. Regular wire may induce capacitance in
the line and corrupt the signals from the pressure switches.
3. Attach the cable shield to the control terminal ground post located in the drive enclosure
adjacent to the control terminals
4. Connect the emergency over-pressure limit switch to the AUX2 control terminal and COM
(common).
CAUTION: By default, AUX1 and AUX2 are programmed to be always in RUN mode. See
parameters AUX1 SELECT and AUX2 SELECT to change this setting.
5. Navigate through the keypad Main Menu item CHANGE PARAMETER VALUES >
INTERFACE PARAMETERS > SYSTEM CONFIG . Select 1 to set the system configuration
for an analog CP system ( see Table 15 for details)
6. To set the emergency over-pressure limit switch, remove the rubber boot from the switch and
pry the plastic plug from the top of the switch housing to access the pressure adjustment
screw. Use an Allen wrench to adjust the pressure setting of the switch and run the pump in
the AUTO mode, and observe the pressure gauge, turning the Allen screw to adjust the
pressure shut-off point.
The emergency over-pressure limit switch should be set at least
10 PSI higher than the desired constant pressure set point .
7. Connect the remaining twisted pair of wires to the + and
– terminals of the transducer
8. Connect the positive terminal of the transducer to the I_1+ control terminal, and the negative
terminal to the I_1- control terminal.
9. If a redundant analog transducer is used, connect it to the I_2+ and I_2- terminals in likewise
fashion. If the sensor on I_1 fails (current signal is zero) the drive will look for a signal on I_2
to control pressure. If there is no signal on I_2 the drive will stop and indicate a fault
ANALOG
20 mA FAULT .
CAUTION : It is critical that the positive terminal of the transducer is connected to the + terminal of
the 4-20mA Control Terminal, and likewise for the negative terminals.
10. Set the
psi SETPOINT on the keypad (see Table 15 Constant Pressure Parameters for
details)
11. Set the keypad to AUTO mode to operate the system