Operating Instructions ACU
Warning thresholds give the user the chance to respond to imminent I²t error shutdown. Via
Warning Limit I2t 615, you can choose a value between 6% and 100% of thermal load.
Thermal time constant motor
Thermal time constant stator
Digital signals signal that of the function "motor circuit breaker" has been triggered.
Triggering of “motor circuit breaker” function as per Operation Mode
571 is reported.
1)
For linking to frequency inverter functions
2)
For output via a digital output.
19.6 V-belt monitoring
Continuous monitoring of the load behavior and thus of the connection between the 3-phase
machine and the load is the task of the V-belt monitoring system. Parameter Operation Mode 581
defines the function behavior if the Active Current 214 (sensorless control) or the torque-forming
current component Isq 216 (field-oriented control method) is below the set Trigger Limit Iactive
582 for longer than the parameterized Delay Time 583.
The function is deactivated.
If the active current drops below the threshold value, the warning
"A8000" is displayed.
The unloaded drive is switched off and error signal "F0402" is
displayed
The error and warning messages can be read out by means of the digital outputs (Signal 22 -
“Warning V-Belt”) or reported to a higher-level control system. The Trigger Limit Iactive 582 is to
be parameterized as a percentage of the Rated Current 371 for the application and the possible
operating points.
To Next Page
Loading...
Need help?
General
