Rockwell Automation 1746-FIO4V SLC 500 Fast Analog I/O/ User Manual - Manual (Page 69)

Publication 1746-UM009B-EN-P - September 2007
Test Module Operation 69
Leave the module connected to the output device to serve as the
output load where possible, but inhibit its affect on controlling the
process. Substitute a passive load for the active device as an
alternative.
Apply Power to the I/O Rack
Apply power to the fixed or modular system. The module’s LED
indicator should be illuminated (red), indicating that the module is
receiving power. If not, troubleshoot the non-illuminated LED
indicator. Check the following:
• The SLC 500 system is not receiving power from its power
supply. For an SLC processor in the fixed system, check the
processor’s POWER LED indicator. For the modular system,
check the power supply LED indicator.
If the LED indicator is not illuminated, refer to the Installation &
Operation Manual of the system.
• System power is not being received by the remainder of the
SLC 500 system. Test this by attempting to go online with the
programming device.
• The module’s slot in the I/O rack is not operational. Remove
power from the SLC 500 system, move the module to another
slot, and restore power. Replace the I/O rack if power
distribution is faulty.
• The module is defective.
ATTENTION
Process operation during system checkout can be hazardous to
personnel. During checkout procedures, disconnect, inhibit, or
substitute a passive load for all devices which, when energized,
might cause the process to operate.