Delta RMC151 - Manual (Page 882)

RMC70/150 and RMCTools User Manual
Input Range Formula Saturates No
Transducer
Transducer
Overflow
RMC70 ±10V RawCounts x
10.125 V / 32,768
counts
at
±10.125V
n/a beyond
±10.1V
RMC150 A, G,
H modules
±10V
RawCounts x 10.0
V / 32,500 counts
at
±10.08V
n/a beyond
±10.08V
RMC150 A, G,
H modules
±5V
RawCounts x 5.0 V
/ 32,500 counts
at ±5.04V n/a beyond
±5.04V
RMC150 UI/O
module ±10V
RawCounts x
10.125 V / 32,768
counts
at
±10.125V
n/a beyond
±10.1V
9.2.1.3.9. Current
Type: Axis Status Register
RMC70 Address: Primary Input: %MDn.11, where n = 8 + the axis number
Secondary Input: %MDn.26, where n = 8 + the axis number
RMC150 Address: Primary Input: %MDn.11, where n = 8 + the axis number
Secondary Input: %MDn.26, where n = 8 + the axis number
System Tag: Primary Input: _Axis[n].Current
Secondary Input: _Axis[n].SecCurrent
where n is the axis number
How to Find: Axes Status Registers Pane, All tab: Feedback
Data Type: REAL
Units: mA
Description
The Current register is the current feedback from an analog transducer. It is derived from
the raw counts register, which is the value from the 16-bit analog-to-digital converter.
The Current register is primarily for the user to set up and troubleshoot scaling.
The Current register is for axes with current feedback. The Voltage register is for axes
with voltage feedback. Axes with other feedback types do not have a Current or Voltage
register; they have a Counts register.
The RMC derives the Current from the Raw Counts, which is the value from the Analog-
to-Digital Converter. The calculations are listed below. These are approximate, as the
analog calibration values are also included in the calculation. The levels at which the
value saturates and certain errors occur are also included.
4-20mA
Input Range
Formula Saturates No
Transducer
Transducer
Overflow
RMC70 RawCounts x 20.0
mA / 16,384 counts
at ±21.0
mA
< 3.6 mA > 21.0 mA
RMC150 A, G,
H modules
RawCounts x 20.0
mA / 32,500 counts
at ±20.1
mA
< 3.6 mA > 20.1 mA
RMC150 UI/O
module
RawCounts x 20.0
mA / 16,384 counts
at ±21.0
mA
< 3.6 mA > 21.0 mA
862 Delta Computer Systems, Inc.