216
GX9 ASD Installation and Operation Manual
Virtual Linear Pump Low Suction/No-Flow Cut Off Fault
Action
Program
Virtual Linear Pump
Low Suction/No-Flow Cut Off
This parameter is used in conjunction with the setting of parameter
If
On (Physical Switch)
or
On (Electronic Switch)
is selected at parameter
, then this parameter selection sets the disposition of the system in the
event of a
Low Suction
/
No-Flow
Cut Off
condition that exists for the duration
of the parameter
setting.
If
Off
is selected at parameter
, then this parameter selection is ignored.
Settings:
0 — Trip
1 — Alarm
Direct Access Number — F935
Parameter Type —
Selection List
Factory Default —
Trip
Changeable During Run —
Yes
Virtual Linear Pump Low Suction/No-Flow Cut Off Delay
Timer
Virtual Linear Pump
Low Suction/No Flow Cut Off
This parameter has three functions.
1.
It is used to set the time that the ASD will be allowed to run at the
continuously before the system is turned off.
This condition is used as an indication of loss of feed water or a closed
output valve.
2.
It is used to set the time that a
Low Suction/No Flow
condition is allowed
to continue before a shut down.
3.
It is used to set the time that must lapse before a system restart is attempted
after a system shut down due to a
Low Suction/No Flow
condition. See
for more information on this function.
Direct Access Number — F936
Parameter Type —
Numerical
Factory Default —
10
Changeable During Run —
Yes
Minimum — 1
Maximum — 255
Units — Seconds
Virtual Linear Pump Sealing Water Mode
Virtual Linear Pump
Sealing Water
This parameter
Enables/Disables
seal water detection.
On larger or older pumps external sealing water is required at start up. Until
adequately supplied with sealing water the ASD will not start.
An external sealing water pump is required to supply sealing water and is
enabled via an ASD output contactor set to
Normal ASD operations are allowed once an adequate water supply is detected
at the seal, as detected by a pump-mounted reed switch that is connected to a
discrete input terminal of the ASD.
Set the discrete input terminal to
Settings:
0 — Off
1 — On
Direct Access Number — F937
Parameter Type —
Selection List
Factory Default —
Off
Changeable During Run —
Yes
Содержание GX9
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