ABB ACS880 ESP, Руководство по прошивке

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PCP/ESP program features 45

Timing diagram
The points (X1, Y1), (X2, Y2) and (X3, Y3) on the user defined monitoring curve are
taken as reference to calculate the underload condition. The actual rod torque is
compared with the interpolated points on the curve. If the value lies below the curve,
it is interpreted as underload condition.The pump underload protection function is
active after the delay time is passed.

Settings
Parameter group: 78 Pump underload protection
Signals: 09.01 Rod torque , 09.05 Rod speed and 09.14 Pump status word (Bit 6).
Warnings: D202 Underload
Faults: D102 Underload fault
Pump temperature protection
This function protects the pump from overheating. User can select the reaction on
overheating condition: Warning, Fault or no reaction. The temperature feedback
comes through analog input (PT-100) or digital input (Klixon), or both the sources can
be connected and used simultaneously. The pump temperature protection function
provides temperature data through analog sensor even if temperature protection is
disabled.

Timing diagram
The measured temperature is compared against the defined fault and warning
temperature limits. When the measured value reaches the warning limit, the
temperature protection function is activated. After the delay time in 5 seconds, a
warning message is triggered. The temperature protection function is still active. After
Y3 (Par 78.07 )
Y2 (Par 78.05 )
X1
(Par
78.04 )
X2
(Par
78.06 )
X3
(Par
78.08 )
Rod torque
Rod speed
Actual rod speed
Actual rod torque (Underload)
Calculated rod torque
Normal region
Underload region
Y1 (Par 78.03 )