314 Parameters
78
78 Pump underload
protection
Pump underload protection function.
78.01 Underload limit
display
Selects the pump underload protection measurement as
torque or current. See Pump underload protection, page
44.
To rq u e
Torque Rod torque value for rod torque protection. See
parameters 78.03 Torque1, 78.05 Torque2 and 78.07
Torque3, which are percentage of rod torque limits in
parameter 74.19 Maximum rod torq ref.
0
Current Motor current value for pump underload protection. See
parameters, 78.03 Torque1, 78.05 Torque2 and 78.07
Torque3, which are percentage of motor current limits in
parameter 99.06 Motor nominal current.
1
78.02 Underload function Selects the Pump underload protection function. See
section Settings on page 44.
No
No No reaction on protection condition. 0
Warning Display warning message. 1
Fault The control program triggers a fault condition and displays
the warning message.
Note: The fault is triggered only after the pump stops.
2
78.03 Torque1 Defines the torque 1 value used for the Y position of the
first X-Y plot to create the user defined underload curve for
the system.
1600.00 T(%)
or A(%)
0.00...10000.00 T (%) Torque 1 10 = 1 T(%) or
A(%)
78.04 Speed1 Defines the Rod speed 1 value used for the X position of
the first X-Y plot to create the user defined underload
curve for the system.
0.00 Prpm,
rpm or Hz
-3600.00
...3600.00 Prpm
Speed 1 10 = 1 Prpm,
rpm or Hz
78.05 Torque2 Defines the Rod torque 2 value used for the Y position of
the second X-Y plot to create the user defined underload
curve for the system.
1600.00 T(%)
or A(%)
0.00...10000.00 T(%) Torque 2 10 = 1 T(%) or
A(%)
78.06 Speed2 Defines the Rod speed 2 value used for the X position of
the second X-Y plot to create the user defined underload
curve for the system.
1000.00
Prpm, rpm or
Hz
-3600.00
...3600.00 Prpm
Speed 2 10 = 1 Prpm,
rpm or Hz
78.07 Torque3 Defines the Rod torque 3 value used for the Y position of
the third X-Y plot to create the user defined underload
curve for the system.
1600.00 T(%)
or A(%)
0.00...10000.00 T(%) Torque 3 10 = 1 T(%) or
A(%)
No. Name/Value Description Def/
FbEq16
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