Ronan XSD-1000 - Manual (Page 61)

60
Detector Failure
Detector Failures can come from two areas:
• Actual detector failure
• Failure of Scintillator Input Remote I/O Module power supply
(You can refer to the chart in the ‘Remote I/O Module Addressing’ for the correct I/O
Module address if you are not sure which I/O Module to look for).
• Check the Scintillator Input Remote I/O Module in the Remote I/O Enclosure to
ensure its red LED is flashing. If not, refer to the ‘Remote I/O Failure’ section.
Check the voltage at the Remote I/O Modules pins +24V & Com. You should see at
least 15VDC at these terminals. If so, proceed to the section ‘Troubleshooting the
Detector’.
• If there is no voltage at these pins, disconnect the wires to the +24V and Com
terminals and recheck the voltage.
• If you read a low voltage (less than 15VDC) or have no voltage, replace the
Scintillator Input Module.
• If the voltage is greater than 15VDC, proceed to the ‘Troubleshooting the Detector’
section.