● In the variant as water-air re-cooling unit, the heat loss is dissipated to the ambient air using
a separate installed heat exchanger. If you expect air temperatures below 0° C, you must
install a water-glycol intermediate circuit. Glycol is not permitted in the ionized-water circuit.
The measuring units and the control of the electrical equipment are evaluated in the re-
cooling unit. The supplier calibrates the measuring units in accordance with the order
specifications.
● Any failure of the re-cooling unit causes the immediate shutdown of the drive. If the re-
cooling unit is provided by the system integrator, take this into consideration for the
configuring.
● Use two redundant circulating pumps. No interruption of the flow is permitted. The only
exception is a pump shutdown. The shutdown time must not exceed three seconds.
● Provide an overpressure valve in the raw water discharge of the heat exchanger. To keep
the temperature of the ionized water constant within specified limits and to prevent
condensation, on request, a control valve (tree-way valve) can be installed as bypass.
Because the valve is controlled depending on the temperature of the deionized water, up to
approx. 100% of the raw water can be conveyed past the heat exchanger.
● Acquire the temperature of the raw water with a sensor and evaluate the data.
● To reduce the raw water consumption, the flow quantity can be reduced. A reduction,
however, is possible only when the raw water does not contain any suspended matter that
could accumulate in the heat exchanger for a slower flow speed.
● Procure timely any consumables and spare parts from the supplier of the re-cooling unit.
4.2
Requirements when mounting and installing the device
4.2.1
Requirements for installation location
The cabinet units are suitable for installation in general operating areas (to
DIN EN 60146-1-1 / VDE 558 T11 and DIN EN 50178 / VDE 0160 (IEC 62103), degree of
contamination 2; without conducted contamination). For this reason, SINAMICS devices must
be protected in such a way that they cannot be touched directly when they are being installed
in general operating areas.
The operating areas must be dry and free of dust. The air supplied must not contain any
electrically conductive gas, vapors, or dust which could impair operation.
For information about permissible ambient and installation conditions, see the "Technical data
and drawings" section.
Preparations for use
4.2 Requirements when mounting and installing the device
SINAMICS GL150 6SL38555UN113KA0Z
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