National Instruments FP-AI-112 Welding System User Manual


 
© National Instruments Corp. 9 FP-AI-112 and cFP-AI-112
using 14 AWG (1.6 mm) wire with a ring lug. Use the 5/16 in.
panhead screw shipped with the backplane to secure the ring
lug to the backplane PE ground terminal.
As with any hazardous voltage wiring, make sure that all
wiring and connections meet applicable electrical codes and
commonsense practices. Mount terminal bases and backplanes
in an area, position, or cabinet that prevents accidental or
unauthorized access to wiring that carries hazardous voltages.
•Do not use the [c]FP-AI-112 as the only isolating barrier
between human contact and working voltages higher than
250 V
rms
.
Operate the [c]FP-AI-112 only at or below Pollution Degree 2.
Pollution Degree 2 means that only nonconductive pollution
occurs in most cases. Occasionally, however, a temporary
conductivity caused by condensation must be expected.
•Do not operate FieldPoint products in an explosive atmosphere
or where there may be flammable gases or fumes. If you need
to operate FieldPoint products in such an environment, the
FieldPoint products must be in a suitably rated enclosure.
Operate the [c]FP-AI-112 at or below Installation Category II.
Installation Category II is for measurements performed on
circuits directly connected to the low-voltage installation.
This category refers to local-level distribution, such as that
provided by a standard wall outlet.
Specifications
The following specifications are typical for the –40 to 70 °C
temperature range and for 50 and 60 Hz filter settings unless
otherwise noted. Specifications are subject to change without
notice.
Input Characteristics
Number of channels..........................16
ADC resolution.................................16 bits at 50 or 60 Hz;
10 bits at 500 Hz
(refer to table)
Type of ADC.....................................Delta-sigma