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Troubleshoot
April 2023
Recommended actions
9.3.28
Line Freq Error
AC power line frequency out of usable range, < 45 Hz or > 66 Hz.
Potential cause
High noise or voltage fluctuations in power supply.
Recommended actions
Potential cause
AC power line frequency is outside the usable range of the Rosemount OCX8800 universal
power supply.
Recommended action
Correct power supply frequency.
AC power line frequency must be between 50 and 60 Hz.
Potential cause
Electronics package failure.
Recommended action
9.3.29
Line Voltage Low
AC power line voltage below minimum, < 85 Vac.
Potential cause
High noise or voltage fluctuations in power supply.
Recommended actions
Potential cause
Electronics package failure.
Recommended actions
198
1. Check power supply for line noise or voltage fluctuations.
2. Install filter power line kit (PN 6A00171G01) or high quality line filter for input
power.
1. Check power supply for line noise or voltage fluctuations.
2. Install filter power line kit (PN 6A00171G01) or high quality line filter for input
power.
1. Check power supply frequency with a calibrated oscilloscope or frequency
meter and compare with line frequency.
2. Replace electronics package if they do not agree within 1 Hz.
1. Check power supply for line noise or voltage fluctuations.
2. Install filter power line kit (PN 6A00171G01) or high quality line filter for input
power.
1. Check power supply voltage and compare with line voltage.
2. Replace electronics package if they do not agree within five percent.
Manual
00809-0500-4881
Emerson.com/Rosemount
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