Tyco Electronics Galaxy SC Controller J85501F-1
Issue 13 February 2001 Feature Descriptions 7 - 30
DISCONNECTED(LV) - The contactor is open
because the plant voltage was lower
than the disconnect threshold.
DISCONNECTED(HT) - The contactor is open
because the battery temperature was
higher than the high temperature
disconnect threshold.
(Used only for LVBD contactors).
DISCONNECTED(MT) - The contactor is open
from user requested maintenance.
(Used only for 2 LVBD contactors).
DISCONNECTED(FAILED) - The contactor is
closed, but was commanded to be open.
There can be any combination of
disconnected reasons.
disconnect threshold The voltage that the LVBD or LVLD
contactor opens. For 48 volt plants, the
range of values is 40 to 50 volts,
default of 44. For 24 volt plants, the
range of values is 20 to 25 volts,
default of 22.
reconnect threshold The voltage that the LVBD or LVLD
contactor will close at, after the
contactor has opened. The reconnect
threshold should be higher than the
disconnect threshold.
For 48 volt plants, the range of values is
45 to 55 volts, default of 48.
For 24 volt plants, the range of values is
22 to 27 volts default of 24.
high temperature If any battery section temperature
disconnect associated with the battery contactor is
threshold above this threshold, the contactor will
open. The contactor will close at 3
degrees Celsius below the disconnect
threshold.
contactor open alarm Each contactor has an alarm (C1O,
C2O) that indicates that the contactor is
open.