Siemens SINAMICS S120 Manual page 207

Heat Exchanger Modules are used to dissipate the power loss from the converter. They
comprise an inner deionized water circuit and an outer raw water circuit.
The hot deionized water in the internal circuit of the converter passes through a low-
maintenance circulating water pump into the water/water plate-type heat exchanger. This is
manufactured out of stainless steel and connected to the raw water circuit on the plant side.
The deionized water is cooled there by the raw water of the plant-side circuit and flows back
into the converter.
To avoid condensation at excessively low raw water temperatures, a 3-way valve for
controlling the water temperature is installed as standard in the deionized water intake.
The Heat Exchanger Modules are controlled and monitored in the external CU320-2 Control
Unit or CU310-2 Control Unit (as of V1.2 on request) as "Technology Extension HEM".
As a minimum, the Heat Exchanger Module contains the following components:
● 1 pump
● 1 plate-type heat exchanger
● 1 3-way valve
● Filter, expansion chamber, vent, safety valve, pressure sensors, pressure display,
temperature sensor, TM31 Terminal Module.
Heat Exchanger Modules are available for the following voltages and cooling power ratings:
Line voltage
3 AC 380 ... 415 V
3 AC 500 ... 690 V
Note
Voltage adaptation for the pump
For Heat Exchanger Modules for line voltages of 3 AC 500 ... 690 V, the voltage is adapted
to the 3 AC 400 V supply voltage of the pump using a transformer.
Table 6- 34
Terminals
U1/L1, V1/L2, W1/L3
3-ph. AC power input
SINAMICS Technology Extension HEM
The software and the Function Module for the SINAMICS HEM V1.2 can be found at the
following address:
SINAMICS Technology Extension HEM (Heat Exchanger Module) V1.2
(https://support.industry.siemens.com/cs/ww/de/view/109772200)
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A
Cooling power
32 ... 120 kW
32 ... 120 kW
X1 terminals for the line supply
Technical data
Voltage:
3 AC 380 V –10 % ... 3 AC 415 V +10 %
3 AC 500 V –10 % ... 3 AC 690 V +10 %
Frequency:
50 Hz
Cabinet Modules
6.4 Heat Exchanger Modules
205