Edwards nEXT nEXT85 - Serial Control with Parallel Monitoring; Parallel Control with Serial Monitoring or Serial Configuration; Motor Controller Configuration (Serial Configuration)

compable interface by seng the posion of the RS485 / RS232 slide switch. Refer to
Connecon for serial control and monitoring on page 45.
The serial enable signal must be linked to 0 V for the system to accept commands from
the serial link. This is a safety feature which operates as an interlock. For pure serial
control, the parallel start signal will be le unconnected.
The motor controller will connue to give normal and analogue signals on the logic
interface connector even when operang under serial control. You can get the status of
the normal signal and the value of the system parameter on the analogue output by
interrogang the system status through the serial link.
Refer to Connecon for serial control and monitoring on page 45 for more informaon
about the serial interface.
2.4.4 Serial control with parallel monitoring
Normal and analogue signals stay available when using serial control. You can control the
pump through the serial link while monitoring the normal and analogue signals in the
parallel interface.
The serial link uses the same connector pins as the parallel signals standby and fail so
these parallel control and monitoring signals are not available. The serial enable signal
must be linked to 0 V and the parallel start signal will be le unconnected.
2.4.5 Parallel control with serial monitoring or serial conguraon
Use this conguraon to operate the pump in parallel control mode, with the opon to:
▪ adjust the conguraon sengs stored in the motor controller or
▪ monitor operaonal status of the pump through the serial link or through the USB
service port.
If using the USB service port with manufacturer's nST PC soware, it is not necessary to
link the serial enable signal to 0 V for the serial communicaons to take place. While
operang under parallel control with the USB service port, all parallel control and
monitoring signals are available (as given in Parallel control and monitoring on page 15),
which include the standby control line and fail monitoring line.
If using the serial link, the serial enable signal must be linked to 0 V for serial
communicaons to take place. While operang under parallel control with the serial link
acve, the parallel start control signal is available (as given in Parallel control and
monitoring on page 15), but the standby control line will not be available as it is used as
a serial data line.
If the serial enable line is deacvated while the RS485 / RS232 slide switch is in the
RS232 posion, the serial link has to be disconnected. We recommend you to make a
special cable for the serial communicaons that includes a link between the serial
enable and 0 V. This way, the serial enable is automacally acvated when the cable is
connected and deacvate when the cable is removed.
2.4.6 Motor controller conguraon (serial conguraon)
All conguraon sengs stored in the motor controller are kept when the power to the
pump is removed so that it is possible to use another system to congure the motor
controller before the installaon of the pump at the applicaon. You can congure the
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B8G000880_D - Introducon