Page 42
© Copyright 2023 ABB. All rights reserved.
GPS2436_MAN
Rev. 1.3
BSL
-
63 FAJ: Fuse Alarm Major
An optional battery potential input, must use an external 1K ohm 2W current limiting resistor at the
source. A Fuse Alarm Major is generated when battery potential is received.
BSL
-
65 FAN: Fuse Alarm Minor
A battery potential input is required, which must use an external 1K ohm, 2W current limiting resistor
at the source. A Fuse Alarm Minor is generated when battery potential is received.
BSL
-
72 OS: Open String Alarm
A battery potential input is required, which must use an external 1K ohm 2W current limiting resistor
at the source. This circuit is used to signal Galaxy that a battery string protective device or switch is
in the open position. An Open String Alarm is generated when battery potential is received.
BSL
-
64 AMJ: Aux Major
A battery potential input is required, which must use an external 1K ohm, 2W current limiting resistor
at the source. This circuit is used to allow Galaxy to monitor another power device and provide
alarms for it. An Aux Major Alarm is generated when battery potential is received.
BSL
-
66 AMN: Aux Minor
A battery potential input is required, which must use an external 1K ohm, 2W current limiting resistor
at the source. This circuit is used to allow Galaxy to monitor another power device and provide
alarms for it. An Aux Minor Alarm is generated when battery potential is received.
LVD1: BSL
-
84 Low Voltage Disconnect Active
A battery potential input is required, which must use an external 1K ohm, 2W current limiting resistor
at the source if not using standard ABB Power LVD circuit boards or controller. This circuit is used to
inform Galaxy that the monitoring circuit of a Low Voltage Disconnect device has failed. In standard
Galaxy Power Systems, the Bay Interface board monitors these alarms and informs the Controller
through the serial interface connection.
LVD2/LVD2R: BSL
-
61/62 Low Voltage Disconnect Active
A closure between these points or a ground signal into LVD2/ BSL
-
61 is used to inform Galaxy that
the a Low Voltage Disconnect device has opened. In standard Galaxy Power Systems, the Bay
Interface board monitors these alarms and informs the Controller through the serial interface
connection.
External Boost Option
A variety of external devices may be used to initiate boost in Galaxy. Wiring is required from
positions 67/68/69 on the BSL board for operation of this feature. Providing a contact closure
between TBST and TRTN initiates the boost feature. A contact closure between TFLT and TRTN
returns the plant to float. Additional information on External Boost can be found in the User
’
s Guide
for Millennium II Controller Advanced Features manual.
Rectifier Sequence Option
The controller is capable of sequencing rectifiers on line after detecting a AC is being provided by
emergency generator. Internal Rectifier Sequencing requires external wiring to ETR/ETRR on BSL pin
numbers 75/76, and optionally RO/ROR on BSL pin numbers 77/78, in order to function.
The controller can also accept ground signals onto TR1 to TR4 on BSL 73/79/ 85/80 from an external
device to control the sequencing of plant rectifiers in groups as follows:
