Cooling Unit - Siemens SINAMICS S120 Function Manual

Function modules

9.5 Cooling unit

9.5 Cooling unit
Overview
A cooling unit is responsible for the cooling and the (non-)conductivity in the de-ionized water
cooling circuit of a liquid-cooled power unit. The cooling unit is controlled and monitored from
a PLC that is part of the cooling unit.
Function description
The "cooling unit" function module here is used as an interface between the Control Unit and
the external PLC as well as external sensors of the cooling unit. Signals for control and
messages between the PLC and the Control Unit can be exchanged via this interface. The PLC
communicates with the Control Unit via terminals and/or via a fieldbus (e.g. PROFIBUS or
PROFINET).
Features
● Automatically activated when using liquid-cooled power units
● Evaluation of an external sensor for leakage water
● Evaluation of an external sensor for liquid flow
● Evaluation of an external sensor for conductivity
● Monitoring the liquid intake temperature using external temperature sensors
● Monitoring the flow rating using internal temperature sensors
● Evaluation of signals transmitted from the PLC of the cooling unit
● Acknowledging cooling unit faults
Commissioning the function
You activate the "Cooling unit" function module while configuring the associated power unit
(Motor Module or Infeed Module). To commission the function module, proceed as follows:
1. When selecting the power unit, set the cooling type to "Liquid cooling".
2. Complete the configuration.
3. After configuration has been completed, the heat exchanger unit can be seen in the
navigation window under "Power Unit > Functions" (also in the shortcut menu of the power
unit under "Functions").
4. Double-clicking "Cooling unit" opens the window for setting the monitoring functions.
In this window, BICO interconnections can be set for communication with the controller of
the cooling unit and the cooling water circuit monitoring.
You can check the current configuration in parameter r0108.28.
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Function Manual, 06/2019, 6SL3097-5AB00-0BP2
Drive functions