Replacing the hall effect current sensor (hecs) – Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - ForGe Control (PanelView 550) User Manual
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Rockwell Automation Publication 7000-UM151E-EN-P - January 2013
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Component Definition and Maintenance Chapter 3
Figure 22 - Capacitor in grounding network
Replacing the Hall Effect Current Sensor (HECS)
1. Isolate and lock out all power to the drive.
2. Note the location of all wires and the orientation of the HECS. For quick
reference when checking the orientation of the HECS, look for the white
arrow.
3. Remove the round bus bar. Remove the M10 hardware and slide the bar
out.
4. Remove the output connector. Note the orientation.
5. Remove the four screws on the base of the Hall Effect sensor and remove
the sensor.
Important:
Torque on capacitor terminals
3.4 Nm (30 lb-in)
Loosen screws to release capacitor
ATTENTION: To prevent electrical shock, disconnect the main power
before working on the drive. Verify that all circuits are voltage-free using
a hot stick or appropriate voltage-measuring device. Failure to do so may
result in injury or death.
IMPORTANT The Hall Effect Current Sensor (HECS) and wires must be in the proper
orientation. Note the position before disassembly.