Note:
Serial enable is also a con
trol input, it is not necessary in a system that operates under
parallel control. Make sure that there is no connecon to the serial enable (pin 5).
Note:
To use the s
tandby or fail parallel interface signals, make sure that the RS485 / RS232
slide switch is in the RS232 (default) posion. Refer to Connect the serial interface to the
customer control equipment on page 47.
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
mang half.
When the pump is shipped, the analogue output is congured to monitor the
rotaonal speed of the pump. To monitor other parameters, congure the pump
again using the commands over the serial interface. Refer to Connecon for serial
control and monitoring on page 47 for more informaon.
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
mang 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 rang (up to 20 mA).
3. To monitor the fail status output, connect the customer control equipment to the
fail output (pin 7) and t
o the pin 2 of the customer logic interface mang 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 rang (up to 20 mA).
4.7 Connecon for serial control and monitoring
In the serial interface, the pump is controlled through a number of serial commands or
the nST PC soware. You can also check the operaonal status in the serial interface. In
the mul-drop mode, connecon 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 opons. Use the slide switch (given
above the controller connector) to select the serial interface (refer to Figure: Controller
status informaon). To adjust the slide switch, remove the plasc 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 seng of the motor controller is RS232 serial interface.
04/2022 - ©Edwards Limited
Page 47B80000880_G
B80000880_G - Installaon
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