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Advanced Diagnostics
Product Description
LED Indication
PRI PWR or SEC PWR LEDs
are off.
1 segment LED is flashing yel-
low
(on/off with 2 Hz).
1 segment LED is flashing red
(on/off with 2 Hz).
All segment LEDs are flashing
yellow
(on/off with 2 Hz).
All segment LEDs are flashing
red
(on/off with 2 Hz).
Any (or all) segment LEDs are
constantly lit red.
3.1.4
Mounting the Diagnostic Module
Warning!
Hardware Damage
If you plug the diagnostic module HD2-DM* into the wrong connection slot, the module or the
motherboard may be damaged.
The Power Hub motherboard features a special connection slot for diagnostic modules labeled
"Diagnostic Module only". Use this slot only.
20
Fault Type
Supply power failure, possible
reasons:
•
No primary and/or second-
ary supply power is avail-
able
•
Supply power < 19.2 V
•
Supply power > 35 V (32 V
if at least 1 non-isolated
power module is plugged-
in or configured)
A segment/field device main-
tenance required alarm is
active.
Any segment/field device
alarm is active.
A system maintenance
required alarm is active.
Any system alarm is active.
A hardware fault inside HD2-
DM-A is detected.
Remedy
Connect diagnostic PC and
carry out a complete sys-
tem diagnostics:
•
Bulk power supply
switched on and healthy?
Verify that the wiring is secure:
•
Tug on the wires/cable
clamps
•
Measure the DC voltage at
the terminal block connec-
tor to the bulk power sup-
ply
Connect diagnostic PC and
carry out a complete sys-
tem diagnostics:
•
DC unbalance?
•
Jitter level too high?
•
Noise level too high?
Bus segment ...
•
... badly terminated?
•
... miswired (shield con-
nections)?
•
... short–circuit overload?
Power supply/conditioner
modules healthy and cor-
rectly mounted?
Connect diagnostic PC and
carry out a complete sys-
tem diagnostics:
•
Bulk power supply voltage
correct?
•
Board type configuration
correct?
•
Board redundancy config-
uration correct?
-
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