Lucent Technologies ECS Minicell Battery Plant H569-420
7 - 4 Maintenance
Issue 5 February 1997
Red LVD OPEN
LED Lit
The Red LVD OPEN LED indicates that the LVD Contactor is
de-energized, i.e., open. The contactor may be open due to one
of four reasons:
1. Plant voltage is below the disconnect threshold.
2. The contactor has failed and must be replaced. See
procedure in this section on page 7-6.
3. There is an open circuit in the wiring that powers the
contactor. Check the cable assembly from the LVD/Fuse
Board to the contactor. (See drawing T-82670-30 figures 1
and B.)
4. Both redundant LVD sensing circuits have failed. The
LVD/Follow the procedure for replacing fuse circuit pack
described in this section on page7-7.
Yellow LVD
FAIL LED Lit
The Yellow LVD FAIL LED indicates that one or both of the
LVD circuits has attempted to open the contactor, but the
contactor is closed. This may occur in two situations.
1. The plant voltage is right at the disconnect level and is
within tolerances of the redundant detector circuits, but
only one detector has operated. No action is required.
2. The LVD circuit has partially failed. Replace the
LVD/Fuse circuit pack per procedure 4.3.3.
Blown Fuse on
LVD/Fuse Board
Refer to ECS controller manual for troubleshooting procedures.
Caution
Replace with fuse of same rating only.
Содержание H569-420
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Страница 7: ...Lucent Technologies ECS Minicell Battery Plant H569 420 2 List of Figures Issue 5 February 1997 ...
Страница 15: ...Lucent Technologies ECS Minicell Battery Plant H569 420 1 6 Introduction Issue 5 February 1997 ...
Страница 71: ...Lucent Technologies ECS Minicell Battery Plant H569 420 6 8 Installation Tables Issue 5 February 1997 ...
Страница 81: ...Lucent Technologies ECS Minicell Battery Plant H569 420 8 2 Spares Issue 5 February 1997 ...
Страница 85: ...Lucent Technologies ECS Minicell Battery Plant H569 420 9 4 Product Warranty Issue 5 February 1997 ...