Effective Motor Load; Figure 16: Effective Motor Load - KEB COMBIVERT F6 Programming Manual

Protection functions
Example:
The motor parameter (dr12) also serves to the definition of the saturation charac-
teristic, except for the limitation of the current (=> chapter 6.2.13 Saturation charac-
teristic (SM) Parameter ms00). This value may not be changed in some applica-
tions.
Here it may be useful to limit the maximum current via is11.

Effective motor load

Index Id-Text Name
0x2C39 ru57 eff. motor load
0x2A11 pn17 eff load time
actual motor
current
actual motor
current
motor rated
current^2
21
1

Figure 16: Effective motor load

pn17 eff load time
Value Function
0.01...300.00s
PT1 filter time
ru57 eff. motor load
ducted.
The time to reach the final value of the function is a multiple PT1 time because of
the root function. Trends for the effective motor utilization can be estimated quickly.
The display area for the effective utilization is limited to max. 8-fold rated motor
current. If the actual motor current exceeds this value, the result behind the PT1
filter is limited. Short peaks in the motor current are detected and evaluated, only
the effective utilization is limited.
74
Function
mean effective motor load in 0.1% resolution
PT1 time for effective motor load
pn17
eff.load time
PT1 filter
1fghfh
is a pure information parameter, no fault response can be de-
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eff. motor load
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0x2A11
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ru57