Motor components, characteristics and options
4.1 Motor components
SIMOTICS M-1FE1 synchronous built-in motors
60
Configuration Manual, 09/2019, A5E47872980B AA
Materials and components in the cooling circuit
The following table lists a wide variety of materials and components which may or may
not be used in a cooling circuit.
Table 4- 6 Materials and components of a cooling circuit
Material
Used as
Description
Zinc
Pipes, valves and
fittings
Use is not permitted.
Brass
Pipes, valves and
fittings
Can be used in closed circuits with inhibitor.
Copper
Pipes, valves and
fittings
Can be used only in closed circuits with inhibitors in which the
heat sink and copper component are separated (e.g. connec-
tion hose on units).
Standard steel (e.g. P235 TR1,
P235 TR2)
Pipes
Permissible in closed circuits and semi-open circuits with
inhibitors or Antifrogen N, check for oxide formation, inspec-
tion window recommended.
Cast steel, cast iron
Pipes, motors
Closed circuit and use of strainers and flushback filters. Fe
separator for stainless heat sink.
High-alloy steel, Group 1 (V2A)
Pipes, valves and
fittings
Can be used for drinking or municipal water with a chloride
content up to < 250 ppm, suitable according to definition in
Chapter "Coolant definition".
High-alloy steel, Group 2 (V4A)
Pipes, valves and
fittings
Can be used for drinking or municipal water with a chloride
content up to < 500 ppm, suitable according to definition in
Chapter "Coolant definition".
ABS (
A
crylnitrile
B
utadiene
S
ty-
rene)
Pipes, valves and
fittings
Suitable according to the definition in Chapter "Coolant defini-
tion". Suitable for mixing with inhibitor and/or biocide as well
as Antifrogen N.
Installation comprising different
materials (mixed installation)
Pipes, valves and
fittings
Use is not permitted.
PVC
Pipes, valves,
fittings and hos-
es
Use is not permitted.
Hoses
The use of hoses should be reduced to a minimum (connect-
ing equipment) and must not be used as the main supply line
for the complete system.
Recommendation: EPDM hoses with an electrical re-
sistance > 10
9
Ω
(e.g. Semperflex FKD supplied from Sem-
perit or DEMITTEL; from PE/EPD, supplied from Telle).
Gaskets
Pipes, valves and
fittings
The use of FKM, AFM34, EPDM is recommended.
Hose connections
Transition
Pipe - hose
Secure with clips conforming to DIN 2817, available e.g. from
the Telle company.
The following recommendation applies in order to achieve an optimum motor heatsink
(enclosure) lifetime:
●
Construct a closed cooling circuit with the cooling unit using stainless steel
technology. The cooling circuit dissipates the heat via a water-water heat exchanger.
●
For all other components, such as cooling circuit pipes and fittings manufactured of
ABS, use stainless steel or general construction steel.
