Effective Exciter Voltage

Type:	Axis Status Register
Address:	RMC70: n/a RMC150: n/a RMC200: %MDn.46, where n = 256 + the axis number
System Tag:	_Axis[n ].EffExciterVoltage
How to Find:	Axes Status Registers Pane, All tab:Feedback
Data Type:	REAL
Units:	V

Description

The Effective Exciter Voltage is the value of the exciter voltage at the load cell. This value is derived from the measured Wire Sense voltage as follows:

Effective Exciter Voltage = Exciter Voltage – 2 X Wire Sense Voltage

Where:

Exciter Voltage = Nominal exciter voltage of the LC8 module

Wire Sense Voltage = Voltage drop between Load Cell Cmn (Sense pin) and the RMC exciter Cmn (Exc-). The Wire Sense voltage itself is reported in raw form in Transducer Status A.

The Effective Exciter Voltage assumes the voltage drop of the Exc+ and Exc- wires is identical. Therefore, this value is valid only if the length and gauge of the Exc+ and Exc- wires are identical.

The Effective Exciter Voltage is always reported, but is only used by the calculation for Millivolts/Volt if the Exciter Mode is set to Adaptive. The Effective Exciter Voltage value can also be used to help set the Fixed Exciter Voltage parameter if the Fixed Value mode is selected.