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Advanced commissioning
6.4 Pump control
6.4.3
Condensation protection
Overview
Condensation is a serious problem for motors in the humid and cold environment, resulting in
motor failure. This problem can be avoided by slightly increasing the surface temperature of the
motor during work break. If an external condensation sensor detects excessive condensation,
the converter applies a DC current to keep the motor warm to prevent condensation.
Precondition
Before enabling the condensation protection, make sure that p0840 = r29659.0, p0844 =
r29659.1, p1143 = r29640.0 and p1144 = r29641.
Note
For converters with PROFINET and PROFIBUS DP interfaces, set p29651 = 2090.0 and
p29652 = 2090.1.
Function description
● OFF1/OFF3: OFF3 disables the condensation protection function while OFF1 enables this
function again.
● OFF2/fault: The motor stops and the condensation protection function is deactivated.
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Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC
SINAMICS G120X converter
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