Edwards nRVi, Instruction Manual

Page: 51 / 100

5. Configuration
Before operating the pump configure the motor controller settings so that they are
suitable for the application.
If the system is designed to operate with parallel control and monitoring, there is no
facility to change the majority of the motor controller settings once the pump is installed
on the system. The pump is supplied with all settings at factory default values, as shown
in Table: Summary of commands that can be sent to the pump on page 28 . If any of the
motor controller settings are to be changed, change them before installing the pump on
the system.
The pump can be configured using the customer serial comms over the serial interface.
Configure the pump using serial commands on page 47 details the commands that will
be needed to configure the motor controller. Alternatively, use the TIC Turbo and
Instrument Controller or TAG Controller. Further information regarding this is detailed in
Configure the pump using a TIC on page 51 .
Note:
The standby speed may be adjusted using the button on the motor controller as
described in Standby speed setting on page 49 .
If the pump is operated with parallel control and monitoring and the controller settings
will not be reconfigured, go straight to Before starting the pump on page 54 .
5.1 Configure the pump using serial commands
Refer to Table: Summary of commands that can be sent to the pump on page 28 for a
summary of the full set of serial commands, parameter ranges and factory defaults for
each setting.
5.1.1 Message structure
The message structure and command set are the same for RS485 and RS232 options. To
communicate a message to the pump, the characters must be sent in a specific order. If
the message does not conform to the correct structure it will be ignored and no reply
will be sent.
Data is stored and accessed via two memory types within the pump:
▪ Non-volatile memory - this provides access to persistent data which is restored
after power cycling; the prefix 'S' indicates persistent data.
▪ Volatile memory - this provides access to non-persistent data which is not restored
after power cycling; the prefixes 'C' and 'V' indicate non-persistent data.
The correct structure to use is as follows:
▪ a valid start character, either a '!' character for a store operation or a '?' character
for a query operation, followed by
▪ a command, which will be an upper case alphabetical character, followed by
▪ an object number, comprising three decimal digits, followed by
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A65901880_D - Configuration