Information On Connecting The Cooling Water - Siemens SINAMICS S120 Equipment Manual

Cabinet Design and EMC
14.4 Arrangement of Components and Equipment
Note
When the power supply input is on the right-hand side of the drive line-up (e.g. in a multiple-
tier configuration), the above rules apply in reverse.
This means that: The Motor Modules are arranged in order of power from the highest power
to the lowest power followed by the DC link components, such as the Braking Module.
14.4.4

Information on connecting the cooling water

Cooling system/circuit requirements
CAUTION
You must take great care when laying the water pipes. The pipes must be secure and
checked for leaks. The water cables must never come into contact with live parts.
● The components for connecting the water to the equipment are made of stainless steel or
● The cooling water infeed line (blue) and return line (red) must be connected in
● Open cooling systems must never be used. Only closed cooling systems - preferably with
● The electrochemical processes that take place in a cooling system must be minimized by
● Stainless steel (V2A or V4A steel; NIROSTA austenite) and non-conductive EPDM/NBR
● Equipotential bonding between the components in the cooling system (converter, heat
● Requirements regarding the quality of the cooling water must also be observed.
● Corrosion inhibitor must be added to the cooling water.
322
thick aluminum. A G 1/2" internal thread is provided for the water connection. The
connection is flat sealing.
accordance with their color markings. The color markings are located next to the water
connection.
a mechanism for monitoring the quality of the cooling water - must be installed.
choosing the right materials. For this reason, mixed installations (i.e. a combination of
different materials, such as copper, brass, iron, or halogenated plastic (PVC hoses and
seals)) should not be used.
hoses (EPDM on the water side) are recommended for the cooling system piping.
exchanger, piping, pump, etc.) must be ensured using conductive construction elements
with a copper bar or stranded copper with the appropriate conductor cross-sections.
Booksize cold-plate power units
Manual, (GH4), 03.2007, 6SL3097-2AJ00-0BP4