Siemens 6SL3210-1SE27-5UA0 [279/318] Installation

Siemens 6SL3210-1SE27-5UA0 [279/318] Installation
Cooling circuit and coolant properties
10.1 Cooling circuit requirements
Manual
Manual, 01/2011, 6SL3097-4AC10-0BP2
279
The individual pressure drops Pi represent the pressure drops of components (heat
exchanger, piping, 70 kPa for the SINAMICS devices connected in parallel, valves, dirt traps,
pipe bends, etc.).
Coolant pipes must be routed with extreme care. The pipes must never come into contact
with electrically live components. An insulation clearance of > 13 mm must always be
maintained between pipes and live parts. The pipes must be securely mounted and checked
for leaks.
10.1.4 Installation
A closed stainless-steel cooling circuit, preferably combined with monitoring of the coolant
quality, is strongly recommended to ensure the longest possible service life for the heat sink.
CAUTION
Coolant pipes must be routed with extreme care. The pipes must be securely mounted and
checked for leaks. They must never come into contact with live components.
Materials and connections
To minimize the electrochemical processes taking place in the cooling system, the materials
must be coordinated with one another accordingly. For this reason, mixed installations (i.e. a
combination of different materials, such as copper, brass, iron, zinc, or halogenated plastic
(PVC hoses and seals)) should not be used or should be limited to an absolute minimum.
The valves and connections required in the cooling system must be made of stainless steel
(V2A or V4A steel; NIROSTA austenite).
The following materials can be used for the cooling system piping:
Pipes and corrugated piping made of stainless steel (V2A or V4A steel; NIROSTA
austenite)
Hoses made of EPDM/EPDM with an electrical resistance <10
9
ohms (e.g. Semperflex
FKD by Semperit; http://www.semperit.at)
DEMITEL® hoses made of PE/EPDM (Telle; http://www.telle.de)
Secure with clips that comply with DIN2871, available from Telle, for example.
All control cabinets must be designed with a PE bar and a good electrical connection must
be established between them.
NOTICE
The sealing materials must be free of chlorides, graphite, and carbon (Viton® or EPDM).
Teflon-based seals are not permitted.

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