Edwards nEXT730 - Stop the Pump with Serial Control; Monitor Temperature Readings with Serial Control; Monitor Link Parameter Readings with Serial Control; Monitor Measured Motor Speed with Serial Control

B8J200880_E - Operation
Page 96
7.4.4 Stop the pump with serial control
On successful receipt of the stop command, the pump rotor will decelerate to rest.
To stop the nEXT pump, send the following command over the serial communications
link:
Command
!
c
8
5
2
sp
0
cr
The reply will be in the following format:
Reply
*
c
8
5
2
sp
r
cr
7.4.5 Monitor temperature readings with serial control
The temperatures of the pump motor, rotor and the internal electronics of the nEXT
pump can be monitored.
Send the following query:
Command
?
v
8
6
5
sp
cr
The reply will be as follows, where the first number is the motor temperature and the
second number is the motor controller temperature and the third number is the rotor
temperature, all measured in °C:
Reply
=
v
8
6
5
sp
d
d
d
;
d
d
d
;
d
d
d
cr
7.4.6 Monitor link parameter readings with serial control
The internal voltage, current and motor power of the nEXT pump can be monitored.
Send the following query:
Command
?
v
8
6
0
cr
The reply will be in the following format (where the first number refers to link voltage
(measured in 0.1 Volts – i.e. divide the number by 10 to get an answer in Volts), the
second number refers to link current (measured in 0.1 Amps) and the third number
refers to link power (measured in 0.1 Watts):
Reply
=
v
8
6
0
sp
d
d
d
;
d
d
d
;
d
d
d
d
d
cr
7.4.7 Monitor measured motor speed with serial control
The measured rotational speed of the motor inside the nEXT pump can be monitored.
Send the following query:
Command
?
v
8
5
2
cr
The reply will be in the following format, where the first returned number refers to
motor rotational speed in revolutions per second (Hz):
Reply
=
v
8
5
2
sp
d
d
d
d
;
h
h
h
h
h
h
h
h
cr