
Functions
5.8 Motor and inverter protection
Frequency inverter
Operating Instructions, 08.10. 2008, t.b.d.
123
Table 5- 31 Parameterizing the monitoring functions
Parameter
Description
No-load monitoring
P2179 = …
Current limit for no-load detection
If the frequency inverter current is below this value, the message "no load" is output.
P2180 = …
Delay time for the "no load" message
Lock protection
P2177 = …
Delay time for the "motor locked" message
Stall protection
P2178 = …
Delay time for the "motor stalled" message
P1745 = …
Deviation of the setpoint from the actual value of the motor flux as of which the
"motor stalled" message is generated
This parameter is only evaluated as part of encoderless vector control.
Frequency-dependent torque monitoring
P2181 = …
Enable signal for function
P2182 = …
Frequency threshold 1
P2183 = …
Frequency threshold 2
P2184 = …
Frequency threshold 3
P2185 = …
Upper torque threshold for frequency threshold 1
P2186 = …
Lower torque threshold for frequency threshold 1
P2187 = …
Upper torque threshold for frequency threshold 2
P2188 = …
Lower torque threshold for frequency threshold 2
P2189 = …
Upper torque threshold for frequency threshold 3
P2190 = …
Lower torque threshold for frequency threshold 3
2192 = …
Delay time for the message "Leave torque monitoring tolerance band"
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For more information about these functions, see the List Manual (function diagrams 4110,
4130, and 4140 as well as the parameter list).