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FP-AO-200 provides double insulation (compliant to IEC 1010-1)
for working common mode voltages of 250 Vrms. Safety standards
(such as those published by UL and IEC) require the use of double
insulation between hazardous voltages and any human-accessible
parts or circuits. You should never attempt to use any isolation
product between human accessible parts (such as DIN rails or
monitoring stations) and circuits which may be at hazardous
potentials under normal conditions, unless the product is
specifically designed (as the FP-AO-200 is) for such an
application.
Even when a product like the FP-AO-200 is used in applications
with hazardous potentials, follow these guidelines to ensure a safe
total system.
•
The isolation of the FP-AO-200 is from input to output, not
between channels on the same module. If any of the channels
on a module are wired at a hazardous potential, ensure that all
other devices or circuits connected to that module are properly
insulated from human contact.
•
Do not share the external loop supply voltages (V and C on the
terminal base) with other devices (including other FieldPoint
devices) unless those devices are also isolated from human
contact.
•
As with any hazardous voltage wiring, ensure that all wiring
and connections meet with applicable electrical codes or
common sense practices. Mount terminal bases in an area,
position, or cabinet that prevents accidental or unauthorized
access to wiring with hazardous voltages.
•
The isolation of the FP-AO-200 is certified as double insulated
for normal operating voltages of 250 Vrms. Do not use the
FP-AO-200 as the sole isolating barrier between human
contact and working voltages of more than 250 Vrms.
FPAO200.fm Page 7 Thursday, July 31, 1997 8:55 AM