B&R ACOPOSinverter P84, User Manual

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Programming guidelines
ACOPOSinverter P84 User's Manual 2.10 303
2.8.12.7 Load variation detection
This detection is only possible with the "high-speed hoisting" function. This function can be used to detect if an
obstacle has been reached, triggering a sudden (upward) increase or (downward) decrease in the load.
The detection of the deviation of a load leads to a fault [load variation fault] (dLF) . The behavior of the inverter
during this fault can be configured via the parameter [dynamic load mgt] (dLb) .
Load variation detection can simultaneously be assigned to a relay or a logic output.
Two types of detection are possible depending on the configuration of the lifting with high speed:
"Frequency reference" mode:
[HSP optim hoisting]
(HSO) =
[F- reference]
(SSO) .
Detection via torque variation
During high-speed operation, the load is compared to that measured during the frequency step. The permissible
load variation and its duration can be configured. If exceeded, the inverter switches to fault mode.
"Current limiting" mode:
[HSP optim hoisting] (HSO) = [current limit] (CSO) .
When hoisting at high operational speeds, a load increase results in a speed reduction. If the operation with high
speed is activated, the inverter goes into the fault mode if the motor frequency is below the threshold value [I limit]
(SCL) . The function only recognizes an increase in the load in the "High speed range" (up to [Current limit] (SCL) ).
On lowering, the operation continues according to the frequency reference mode.