Edwards nRVi, Instruction Manual

Page: 60 / 100

until it reaches standby speed. If it is running faster than standby speed, it will
decelerate until standby speed is reached.
To run the pump at standby speed, send the following command over the serial
communications link:
Command ! C 8 0 3 sp 1 cr
The reply will be as follows:
Reply * C 8 0 3 sp r cr
To return the pump to full speed, send the following command:
Command ! C 8 0 3 sp 0 cr
The reply will be as follows:
Reply * C 8 0 3 sp r cr
6.5.3 Stop the pump with serial control
On successful receipt of the stop command, the pump rotor will decelerate to rest.
Command ! c 8 0 2 sp 0 cr
The reply will be in the following format:
Reply * c 8 0 2 sp r cr
On successful receipt of the stop command, the pump rotor will decelerate to rest.
6.5.4 Monitor temperature readings with serial control
The temperatures of the pump motor and the internal electronics of the pump can be
monitored.
Command ? v 8 5 9 cr
The reply will be as follows, where the first number is the motor temperature and the
second number is the motor controller temperature, both measured in °C:
Reply = v 8 5 9 sp d d d ; d d d cr
6.5.5 Monitor link parameter readings with serial control
The internal voltage, current and motor power of the pump can be monitored.
Command ? v 8 0 9 cr
The reply will be as follows, where the first number refers to voltage (measured in
0.1 Volts
‑
i.e. divide the number by 10 to get an answer in Volts), the second number
refers to current (measured in 0.1 Amps) and the third number refers to motor power
(measured in 0.1 Watts):
Reply = v 8 0 9 sp d d d ; d d d ; d d d d d cr
Page 56
A65901880_D - Operation