Rockwell Automation 7000L PowerFlex Medium Voltage AC Drive (C Frame) - Classic Control - Manual (Page 418)

6-74 Component Definition and Maintenance
7000L-UM300I-EN-P – June 2013 7000 “C” Frame
Temperature Gauge
Temperature is indicated by the temperature gauge (T1) as shown in
Figure 6.60.
Conductivity Sensor XS
Temperature Gauge T1
Temperature Sensor TS1
Figure 6.60 – Temperature and Conductivity Sensors
Fluid Conductivity
An in-line conductivity sensor (XS) as shown in Figure 6.60
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 6.60, 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.
Pump Maintenance and
Replacement (cont.)