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Rockwell Automation 7000L PowerFlex 7000 Medium Voltage AC Drive C Frame - Marine User Manual

Page 251

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Component Definition and Maintenance 4-75

7000 ―C‖ Frame - Marine

7000L-UM302B-EN-P – June 2013

Temperature Gauge


Temperature is indicated by the temperature gauge (T1) as shown in
Figure 4.59.

Conductivity Sensor XS

Temperature Gauge T1

Temperature Sensor TS1

Figure 4.59 – Temperature and Conductivity Sensors


Fluid Conductivity


An in-line conductivity sensor (XS) as shown in Figure 4.59 measures
the fluid conductivity. The sensor sends a signal to a meter mounted
on the pump cabinet door. Two conductivity switches are part of the
meter. They are set at conductivity of 1µS/cm

3

for the annunciation

warning and 2µS/cm

3

for the trip value.

Temperature Sensor


This temperature sensor (TS1), shown in Figure 4.59, triggers the
drive to shut down when the fluid temperature entering the converter
cabinet is too high. This situation could occur if the air cooling of the
heat exchanger is cut off due to fan failure, plugging of the air paths,
or failure of the thermostatic valve.