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OVERLOAD fUNCTION
3.3 Overload function
Valid for drive controllers from firmware version 2.2.0.43.
The overload duration achievable in practice depends essentially on the cooling condi-
tions. The overload protection of the drive controller is triggered by the following causes:
• Permissible heat sink temperature is exceeded, leading to the error message
"OH (Error overheat powermodules)".
• Exceeding the tripping time leads to the error message "ERROR overload",
=>
„Figure 1: Maximum tripping time depending on the overload for AC motors“
3.3.1 AC-Motor (18 / 19 / 23P6)
3.3.1.1 Overload function (OL)
The OL function protects the drive controller against permanent overload. Depending on
the cooling, long-term operation in the overload range can lead to the "ERROR overheat
powermodules", which trips the drive before the OL function responds.
The following graphic shows the tripping time as a function of the respective constant
overload:
Tripping time in minutes
0
5
10
15
20
100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 250 260 270 280 290
18P6
19P6
23P6
Motor current / drive controller rated current in %
Figure 1:
Maximum tripping time depending on the overload for AC motors
Summary of Contents for COMBIVERT P6
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