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Use the Advanced Earth Fault Diagnostic (AEFD) to see more information about the quality of
field wiring in cases where an ES panel or Miniplex system is exhibiting intermittent
communication issues, or where the existing earth fault search fails to adequately locate an earth
fault. AEFD is compatible with EPS and ESS power supplies.
AEFD provides specific diagnostic information about the condition of each earth-searchable
circuit on all AEFD supporting power supplies. On ES Panels that support the AEFD feature, it
measures the quality of each circuit independently and an Adv Earth Fault Diag report includes
the impedance value, a polarity value, and a circuit quality assessment of Good, Poor, or Fault.
The following options are available in the AEFD menu:
Table 2. AEFD menu options
Advanced Diagnostics is a new option in the Earth Fault Diagnostics?
menu.
Last Advanced Diagnostic
Result
Use the Last Advanced Diagnostic Result option to view the results of a
previously run AEFD.
Power Supply Select lists power supply cards upon which the Advanced
Diagnostics can be performed. The cards on the list must meet two criteria:
1. The card must support AEFD.
2. The earth detect jumper must be set to designate this card as the one to
perform Earth Fault Search at its’ specific location.
When you select the power supply card for the search, you must select
whether to include or exclude AUXPWR circuits in the search.
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IMPORTANT: Fire protection is disrupted while you are running AEFD, and
a trouble condition reports at the front panel.
To initiate the AEFD, complete the following steps:
1. Press the Menu key on the front panel interface, and log in at access level 3 or higher.
2. Use the Next or Previous button to scroll to Diagnostic Functions, and press Enter.
3. Scroll to Earth Fault Diagnostics and press Enter.
4. Scroll to Advanced Diagnostics and press Enter. The list of power supply cards supporting
AEFD appears. If the list is empty verify that the Earth Detect jumper on the ESS or EPS is
set to ON, so that the card can perform an earth fault search.
5. Select a card from the list, and press Enter. Two options appear. Select the option to either
exclude or include AUXPWR points, and press Enter.
6. The Run Adv. Diagnostics screen appears. Press Enter to run the AEFD. When the
diagnostic test is complete, the results appear on the screen.
7. To view the results of a previous AEFD, scroll to Last Advanced Diagnostics Result and
press Enter.
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Advanced Earth Fault Diagnostic (AEFD)
AEFD menus and
options overview
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