Siemens SINAMICS S120 Manual page 130

Commissioning the cooling circuit
5.3 Filling the internal deionized water circuit
Status signals of the cooling unit
The following status signals are sent from the cooling unit to the converter:
Status signal
Cooling unit ready
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•
Cooling unit is operating correctly.
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•
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Group alarm
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Group fault
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Low = cooling unit not ready
High = cooling unit ready to switch on. You
can start the converter.
The cooling unit operates correctly after
switch-on.
A pump is running.
The water pressure and the water level match
the specifications.
The coolant temperature lies within the cor-
rect range.
High = no alarm active
Low = at least one alarm message is active
High = no-fault active
Low = at least one fault is active
Function name
DI0
DI1
DI3
DI3
Cabinet Modules liquid cooled
Manual, 10/2015, A5E37067587A
TM31 terminal
-X520:1
-X520:2
-X520:3
-X520:4