6SL3705-0RE27-2AA3

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Heat Exchanger Modules are used to dissipate the power loss from the converter. They comprise a deionized water circuit on the converter side and a raw water circuit on the plant side.

The hot deionized water in the circuit on the converter side passes through a low-maintenance circulating pump (2 redundant pumps with option W01) into the water/water plate-type heat exchanger. This is made 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 outer circuit and flows back into the drive.

The closed converter-side deionized water circuit is filled with coolant in accordance with the requirements in section "Cooling circuit and coolant quality" and deaerated before commissioning. The pressure is maintained by means of an expansion chamber. Any residual air that arises in the circuit during operation is removed via automatic vents.

To avoid condensation at excessively low coolant temperatures, a 3-way valve for controlling the coolant temperature is installed.

The Heat Exchanger Modules are controlled and monitored in the external CU320-2 Control Unit as “Technology Extension HEM”. This means that the Heat Exchanger Modules are controlled and monitored in a drive-related manner which therefore increases usability. The system parameters of the Heat Exchanger Modules can be accessed using the familiar tools (STARTER). The current LOGO! modules are being replaced by the SINAMICS product range (TM31, TM150 Terminal Modules). New functionalities for avoiding condensation are integrated and can be parameterized together with further settings. Integration into the drive system means that integration into higher-level control systems to visualize signals and messages is considerably easier.

Heat Exchanger Modules are available for the following voltages and cooling power ratings:

Heat Exchanger Modules for the line voltages 440В V to 480В V, 60В Hz as well as 660В V to 690В V, 60В Hz are available with options C95 and C97.