protecting ferrous metal, copper alloys and aluminum against corrosion. It is
free from nitrite and minimizes the micro-biological growth.
Coolant additive NALCO 7330 is a non-oxidizing broad band biocide and suit‐
able for application in closed cooling circuit systems.
Coolant additive Nalco 73199 is an organic corrosion inhibitor supporting a
fast own protection layer and covering protection layer for non-ferrous metals.
Coolant temperature
When setting the coolant inlet temperature within a range of 10 ... 40°C (for
de-rating see Fig. 9-1), observe the ambient temperature and the existing rel‐
ative air humidity. To avoid condensation, the coolant inlet temperature must
be below the saturation temperature. The following figure shows the depend‐
ency of saturation temperature of relative air humidity and air temperature.
Example ① Saturation 15.3 °C at ambient temperature of 25°C and relative
air humidity of 55%
Fig. 9-5: Saturation temperature depends from ambient temperature and rela‐
tive air humidity
To avoid condensation of the motors, the coolant inlet tempera‐
ture must be below the saturation temperature.
9.9 Thermal winding protection
The winding temperature is monitored by two systems that are operated inde‐
pendently of each other. The mounted temperature sensor and the drive-in‐
ternal temperature model ensure the best protection of the winding against
thermal overload.
The threshold values for winding temperature monitoring are contained in the
encoder data memory and are read in and monitored automatically during the
operation with IndraDrive controllers. Threshold values are:
● Warning temperature (110 °C)
● Shutdown temperature (120 °C)
Energy storage Temperature sensor
BA1N16 PT1000
BA1N Kinetic Energy Buffer 43/73
Application notes
R911393264_Edition 01 Bosch Rexroth AG
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