The Internal Deionized Water Circuit; Customer Terminal Strips; Table 3-9 Deionized Water Requirements - Siemens SINAMICS SM150 Operating And Installation Instructions

3.5.13.3

The internal deionized water circuit

The internal water circuit is filled with deionized water (deionized, fully-desalinated water). The
conductivity of the cooling water must be ≤ 1 µS/cm in operation.
NOTICE
Inadmissible additives in the deionized water
Inadmissible additives in the deionized water can cause the cooling system to fail. This could
damage the drive.
● Use only deionized water that corresponds to the specifications. The specification of the
Deionized water requirements
Deionized water requirements
Table 3-9
Conductivity during filling
Evaporation residue
pH value
● Content of metals in the hydrogen sulfide group (lead,
● Content of metals from the ammonium sulfide group (iron,
● Content of sulfur chloride and nitrogen compounds
Content of oxidizable, organic substances
3.5.14

Customer terminal strips

The default setting and interfaces of the customer terminal strips can be found in the circuit
manual. For information about the position of the customer terminal strips within the cabinet,
see the layout diagrams.
See also
Terminal assignments (Page 201)
SINAMICS SM150 6SL3845-7NN46-7AA0
Operating Instructions 04/2017
deionized water can be found in the documentation for the re-cooling unit.
Deionized water requirements
antimony, tin, bismuth, arsenic, copper, cadmium)
cobalt, nickel, chrome, manganese)
3.5 Description of the components
Value
< 10 μS/cm
< 20 mg/l
5 to 9
Not detectable
Max. a quantity equivalent to the
usage of 30 mg/l potassium per‐
manganate KMnO4
Description
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