Siemens SINAMICS G120X - Frost Protection

6.4.2 Frost protection
Overview
The freezing water inside of the pump will damage the pump. With the frost protection enabled,
if the surrounding temperature falls below a given threshold, the motor turns automatically to
prevent freezing.
Precondition
Before enabling the frost 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 frost protection function while OFF1 enables this function
again.
● OFF2/fault: The motor stops and the frost protection function is deactivated.
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Note
If you want to run frost protection, make sure that Operator Panels (BOP-2 or IOP-2) or G120
Smart Access does not get control of the motor in the JOG/Hand mode.
Advanced commissioning
6.4 Pump control
SINAMICS G120X converter
316 Operating Instructions, 06/2019, FW V1.01, A5E44751209B AC