NetSure
™
-48V DC Power System
User Instructions, UM582127000 (Issue AD, January 20, 2014)
Spec. No: 582127000
Code: UM582127000
Model No: 721
NPBB
Issue AD, January 20, 2014
[2]
Module Mounting Shelf (Spec. No. 588705000)
The system may contain one or more Spec. No. 588705000
module mounting shelves, each of which houses up to six (6)
rectifier modules or six (6) converter modules. Refer to Power
Data Sheet PD588705000 for more information.
•
Rectifier Modules (for use in Spec. No. 588705000)
The system may contain rectifier modules; which provide load
power, battery float current, and battery recharge current
during normal operating conditions. Refer to the Rectifier
Instructions (UM1R483500E) for more information.
•
Converter Modules (for use in Spec. No. 588705000)
The system may contain converter modules; which provide
load power, battery float current, and battery recharge
current during normal operating conditions. Refer to the
Converter Instructions (UM1C400483500E) for more
information.
Module Mounting Shelf (Spec. No. 588705300)
The system may contain one or more Spec. No. 588705300
module mounting shelves, each of which houses rectifier modules
and optional DC-DC converter modules. Refer to Power Data
Sheet PD588705300 for more information.
•
Rectifier Modules (for use in Spec. No. 588705300)
The system contains rectifier modules, which provide
load power, battery float current, and battery recharge
current during normal operating conditions. Refer to the
Rectifier Instructions (UM1R482000E3) for more
information.
•
Optional DC-DC Converter Modules (for use in Spec. No.
588705300)
Where +24V DC load power is also required, DC-DC
converter modules are available. Refer to the Converter
Instructions (UM1C48241500) for more information.
Operating Procedures
Controller, Rectifiers, and Converters
For operation instructions on these units, refer to the following
documents.
•
ACU+ Controller Instructions (UM1M820BNA or
UM1M820DNA400)
•
Rectifier Instructions (UM1R483500E or UM1R482000E3)
•
Converter Instructions (UM1C400483500E or
UM1C48241500)
ESTOP Function
If an ESTOP switch is wired to the ACU+ IB2 Interface Board,
customer-furnished system ground applied to terminal DI8+
activates the ESTOP function. The ESTOP function shuts down and
locks out the rectifiers or 400V DC input converters, opens the
LVD’s, and shuts down the optional -48V to +24V DC converters.
When the ESTOP signal is removed, LVD’s close (if battery present)
and -48V to +24V DC converters restart. To restart the rectifiers or
400V DC input converters; turn input power to the
rectifiers/converters OFF, wait 30 seconds or more (until the LEDs
on the module extinguish), then turn input power to the
rectifiers/converters ON. Rectifiers/converters can also be
restarted from the ACU+ LCD or WEB Interface menu (via the
Rectifier Reset or Converter Reset command, found in the Manual
menu in the LCD menus or under the Rectifier or Converter Control
Tab in the WEB Interface).
ACU+ Battery Charge Current Limit Feature
Functionality: After a failure of the input source (commercial AC or
DC) or when some battery cells are permanently damaged, the
current to the batteries can be quite extensive. To avoid
overheating or further damages to the battery, the ACU+ can be
programmed to limit the battery current to a preset level by
limiting the charging voltage of the rectifiers/converters. Should
the battery current still exceed a higher preset value, an alarm is
issued.
The controller limits the current going to the batteries based on
the “Battery Current Limit” set point which is a percentage of the
battery capacity in C10. For example, 0.1C10 would mean 10% of
the battery capacity.
Refer to the ACU+ Controller Instructions (UM1M820BNA or
UM1M820DNA400) to program this feature. Battery charge
current is limited to the value set in the ACU+ Controller, as long as
battery voltage is above 47VDC.
Local Controls and Indicators
Refer to the Controller, Rectifier, and Converter Instructions for
descriptions of the local controls and indicators located on these
units.
Refer to this section for descriptions of the local controls and
indicators located on the circuit cards installed in the distribution
cabinet.
Circuit Card Locations
Refer to
