4 Fault Isolation
4.8 HPMM Card and Module Indicators
R688 HPM High-Performance Process Manager Service 355
December 2020 Honeywell
4.8 HPMM Card and Module Indicators
Application of power
When power is first applied to the HPMM, check the Power indicator on each HPMM card and the
HPM UCN Interface module. The Power indicator should be illuminated whenever dc power is present.
Status indicators and Alphanumeric display
After a few seconds, the Status indicator on the High-Performance Communications/Control and
High-Performance I/O Link cards should be illuminated and the alphanumeric display at the front of the
High-Performance Communications/Control cards should display an code that indicates the HPMM is in
the Alive state, such as Axxx.
HPM UCN Interface module
Either the Rx-A or Rx-B indicator at the front of the HPM UCN Interface module should be illuminated,
indicating which UCN cable is active. Normally, the Transmit indicator will flicker to indicate
communication with the Universal Control Network.
Indicator functionality
The following table describes the functionality of the indicators at the front of the High-Performance
Communications/Control and High-Performance I/O Link cards, and the HPM UCN Interface module.
Table 64 HPMM Card and Module Indicators
High-Performance
Comm/Control
The LED illuminates when power is applied to
the HPMM card file. If the LED is not
illuminated, check the Power System, the
power cables to the card file, and the
High-Performance I/O Link card. The
High-Performance I/O Link card provides
power to itself, the High-Performance
Comm/Control card and the HPM UCN
Interface module.
When power is applied to the HPMM card file,
the indicator illuminates and self-test begins. If
the LED extinguishes after a few seconds, the
self-test has encountered a Hard failure.
The LED blinks once a second if the self-test
encounters a failure.
The LED remains on continuously if there are
no failures.
High-Performance
I/O Link
The LED should be illuminated when power is
applied to the HPMM card file. If the LED is
not illuminated, check the Power System and
the power cables to the card file. The
High-Performance I/O Link card provides logic
power to itself, the High-Performance
Comm/Control card, and the HPM UCN
Interface module. A field replaceable 3.2 amp.
fuse on the card provides overload protection
for the +5 volt HPMM supply on this board.
The Status LED illuminates when the HPMM
personality has been successfully
downloaded. If a failure occurs, the LED
extinguishes.
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