Controller Run Time; Pump Run Time; Pump Cycles - Edwards nEXT730D Instruction Manual

Turbomolecular pumps
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Bit number
13
14
15-31

8.5 Controller run time

The run hours and recommended service time of the controller on the nEXT pump can
be monitored.
Send the following query:
Command
The reply will be as follows, where the first number is the hours run by the controller
and the second is the number of hours until service is recommended:
Reply
=
v
8
Note that the number of hours until the next service is due is estimated by the controller
based on the operating conditions of the pump and therefore may reduce at more or
less than 1 hour per hour. The dominant factor in extending controller life is reduced
pump temperature.

8.6 Pump run time

The run hours and recommended service time of the rotor in the nEXT pump can be
monitored.
Send the following query:
Command
The reply will be as follows, where the first number is the start-stop cycles completed by
the pump and the second is the number of start-stop cycles until service is
recommended:
Reply
=
v
8

8.7 Pump cycles

The number of start-stop cycles completed and the number remaining until the next
service is due can be monitored.
Send the following query:
Command
The reply will be as follows, where the first number is the start-stop cycles completed by
the pump and the second is the number of start-stop cycles until service is
recommended:
B8J200880_D
300812671_002_C3
B8J200880_D - Maintenance
Status flag
Bearing conditioning
automatic enable
Bearing conditioning
enabled
Reserved
?
v
8
2
sp d
d
?
v
8
4
sp d
d
?
v
Active flag means
Set if Bearing conditioning is automatically
enabled on bit 8 or 9 set. Typically enabled
by default
Set if Bearing conditioning is presently ena-
bled, refer to
107.
-
8
8
d
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;
8
8
d
d
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d
;
8
8
Page 92
Bearing run in mode
on page
2
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08/2021 - ©Edwards Limited
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