With the Remote Meter Point, you can easily measure shaft voltage and ground current. You can also test for a worn rope.
To read the shaft voltage
Place the positive and negative probes of an oscilloscope or digital voltmeter on the SHAFT VOLTAGE and SIGNAL COMMON [GROUND] test points, respectively.
The resulting voltage or waveform read at this point represents the shaft voltage at the metering rope location.
To test for a worn rope
Press the button at the bottom of the faceplate to illuminate the rope wear indicator LED at the center of the faceplate:
-
If the LED illuminates green, the ropes are not yet in need of replacement.
-
If the LED illuminates red, one or both of the ropes is worn to the point of needing replacement.
To measure current flowing to ground from the shaft
-
Set an oscilloscope or digital voltmeter to measure in the mV scale.
-
Press the button at the bottom of the faceplate to power the current sensor, then place the positive and negative probes on the CURRENT SENSOR + and - test points, respectively.
Use the conversion 100 mV = 1 Amp to convert the read voltage to current, or refer to the following table.