Edwards nEXT 55, Инструкция по эксплуатации

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Use the USB service port only when the 24 - 48 V d.c. power is applied. Do not use the
USB service port without 24 - 48 V d.c. power as there is a risk of corruption of the pump
controller memory.
2.5.2 Parallel control and monitoring
The simple parallel interface is a quick and easy way to control the pump. Same interface
is used on the 24 V manufacturer's Turbo Pumps. The start and standby controls are
available to use. You can monitor the system status using the normal, fail and analogue
output signals.
Refer to
Connect the parallel control and monitoring on page 47 for more instructions
about how to use the parallel interface.
A system that is in operation with a parallel connection only is not capable to adjust the
configuration settings stored in the controller (for example, power limit setting or
controlled venting options). All these features will be at factory default settings. You can
manually adjust the standby speed if the standby mode is selected, but the motor
controller has to be configured separately before the installation of the pump to the
system. Refer to Parallel control with serial monitoring or serial configuration on page 17
and Motor controller configuration (serial configuration) on page 17 for more
information.
2.5.3 Serial control and monitoring
The serial communications link gives complete control and monitoring by using three
signal lines.
The serial data lines have the same connector pins as the parallel signals standby and
fail. The serial data lines can be configured to give an RS485 compliant or RS232
compatible interface by setting the position of the RS485 / RS232 slide switch. Refer to
Connection for serial control and monitoring on page 49.
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 left unconnected.
The motor controller will continue to give normal and analogue signals on the logic
interface connector even when operating under serial control. You can get the status of
the normal signal and the value of the system parameter on the analogue output by
interrogating the system status through the serial link.
Refer to
Connection for serial control and monitoring on page 49 for more information
about the serial interface.
2.5.4 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 left unconnected.
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B8G000880_E - Introduction