Tyco Electronics Galaxy SC Controller J85501F-1
Issue 13 February 2001 Configuration 4 - 57
HV Shutdown Dur Alarm Test: Enables or disables the software
switch for the feature that will fail the rectifiers during an alarm test. Do
not enable this feature with Tyco serial rectifiers. The associated
hardware switch is SW202-4 on the BJB pack.
DC Plant Software Configure → DC Plt. These are various plant features not associated
with Hardware switches.
DES: Allows modification of the default designation.
Shunt Current: Ampere capacity of the system load or battery shunt.
This number is embossed in the shunt. Note that this field must only be
configured when the Shunt Type for the plant is LOAD or BATTERY.
IF SHUNT TYPE is set to NONE, this field has no function.
Shunt Voltage: The rated full scale mV value of the plant load or
battery shunt. Note that this field must only be configured when the
Shunt Type for the plant is LOAD or BATTERY. IF SHUNT TYPE is
set to NONE, this field has no function.
Shunt Type: A shunt type of LOAD means that a load shunt is
connected in a centralized architecture. All of the plant load must be
directed through this single shunt and it is wired directly to the shunt
terminations of TB1 on the BJF card of the Galaxy. A load type shunt
may be located on either the "ground" side (preferred) or "hot" side of
the plant output. The load current displayed on the front panel is
measured directly form the mV signal across this shunt.
A shunt type of BATTERY means that a battery shunt is connected and
wired directly to the shunt terminations of TB1 on the BJF card of the
Galaxy. This shunt monitors only the charge or discharge current going
into or being provided by the battery it is monitoring. A battery type
shunt is only used in distributed architecture systems with a single
battery shunt to monitor the currents of all the plant batteries. The load
current displayed on the front panel is derived from the battery current
and the total rectifier output current.
A shunt type of NONE is selected for distributed architectures where no
shunt is directly connected to the shunt terminations of TB1 on the BJF
card of the Galaxy. Battery charge and discharge current may be
measured via one or more shunts read by either shunt channels of BIC
cards (GPS systems) or remote peripheral monitoring modules. The load
current displayed on the front panel is derived from the battery current
and the total rectifier output current. Total rectifier output current only
is displayed if there are no battery shunts present.
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