Edwards nEXT200200 - Connection for Serial Control and Monitoring; Connect the Serial Interface to the Customer Control Equipment

Note:
Serial enable is also a c
ontrol input, it is not necessary in a system that operates under
parallel control. Make sure that there is no connecon to the serial enable (pin 5).
Note:
T
o use the standby or fail parallel interface signals, make sure that the RS485 / RS232
slide switch is in the RS232 (default) posion. Refer to Connect the serial interface to the
customer control equipment on page 41.
1. To monitor an analogue output, connect the customer control equipment to the
pump analogue output (pin 9) and to the pin 2 of the customer logic interface
mang half.
When the pump is shipped, the analogue output is congured to monitor the
rotaonal speed of the pump. To monitor other parameters, congure the pump
again using the commands over the serial interface. Refer to Connecon for serial
control and monitoring on page 41 for more informaon.
2. To monitor the normal status output, connect the customer control equipment to
the normal status output (pin 15) and to the pin 2 of the customer logic interface
mang half.
You can use the output to control other devices in the pumping system. The output
can operate a low power relay of up to 24 V d.c. coil rang (up to 20 mA).
3. To monitor the fail status output, connect the customer control equipment to the
f
ail output (pin 7) and to the pin 2 of the customer logic interface mang half.
You can use the output to control other devices in the pumping system. The output
can operate a low power relay of up to 24 V d.c. coil rang (up to 20 mA).
4.7 Connecon for serial control and monitoring
In the serial interface, the pump is controlled through a number of serial commands or
the nST PC soware. You can also check the operaonal status in the serial interface. In
the mul-drop mode, connecon of more than one pump to a single serial port on the
control system is possible.
4.7.1 Connect the serial interface to the customer control equipment
The serial interface is available in RS485 or RS232 opons. Use the slide switch (given
above the controller connector) to select the serial interface (refer to Figure: Controller
status informaon on page 42). To adjust the slide switch, remove the plasc connector
cover of the controller and use a small tool to toggle the slide switch. Move the switch to
the right to enable RS232 serial interface. Move the switch to the le to enable RS485
serial interface. The default seng of the motor controller is RS232 serial interface.
Page 41
B85200880_D - Installaon