Bosch Rexroth MS2N, Operating Instructions Manual

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containing abrasive particles.
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having a corroding effect, e.g., salt mist.
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containing a high dust concentration (e.g. sawdust).
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with inflammable gas/dust.
Water cooling (IC3W7)
MS2N motors of size 07, 10 and 13 are available as water-cooled designs. The
cooling circuit of the motor is designed with stainless steel. The designation is
done via the feature cooling mode „L“ within the motor type code. The nominal
data are achieved at ambient temperatures of up to 40 °C.
Cooling system
The motor power loss P
V
transformed to heat is dissipated using the coolant. Ex-
ternal cooling units are necessary to operate water-cooled motors.
The cooling unit must be able to dissipated heat of the motors at any time. In
the case of several motors operating on one cooling circuit, this is valid for the
sum of each power loss. The necessary coolant pressure must be provided for
maximum volume current.
The occurring electro-chemical processes within the cooling system must be
minimized via selection of the materials. Do not combine different materials, like
copper, brass, iron, zinc and halogenated plastics (e.g. tubes and sealing made
of PVC).
Fix coolant ducts and check for their tightness in regular intervals.
Potential equalization
Connect all components within the cooling system (e.g. motor, heat exchanger,
pipe system, pump, pressure compensation container, etc.) with a potential
equalization. Do the potential equalization with a copper bus bar or copper wire
with an appropriate conductor cross-section.
Coolant ducts must not contact live parts. Please observe sufficient insulation
according to the regulations valid for the place of installation.
Coolants
The coolant must comply with certain criteria and treated accordingly (see
tab.
4-4 "Coolant characteristics" on page 17 ). To ensure corrosion protection and
chemical stabilization, an additive must be admixed to the cooling water. The se-
lected coolant additives (biocides, inhibitors) must comply with the materials in
the cooling system (e.g. copper, brass, stainless steel, etc.) and minimize the
micro-biological growth. Pay attention to environmentally friendly materials.
A cooling with floating water from the supply network is not allowed. Floating
water can cause sediments (chalk) or corrosion within the cooling system.
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About this product MS2N Synchronous Servomotors
Bosch Rexroth AG R911347581_Edition 04