ADTRAN NIU3 User Manual

61175043L3-5A  
Issue 1, January 2004  
CLEI Code: SIMPAADA_  
CLEI Code: SIMPAAGA_  
AC/DC Power Supply and Battery Charger  
Installation and Maintenance  
CONTENTS  
FIGURES  
TABLES  
Figure 1. AC/DC Power Supply and Battery Charger  
1. GENERAL  
2. DESCRIPTION  
This practice provides installation and maintenance proce-  
dures for the ADTRAN ™ AC/DC Power Supply and Battery  
Charger (PS/BC). Figure 1 is a front and back illustration of  
the PS/BC.  
The AC/DC PS/BC provides -54 VDC to the Power Supply  
unit in various supported product systems. The PS/BC  
receives 115 VAC through a standard plug and wall socket.  
Some of the more common supported ADTRAN systems  
include:  
Revision History  
This is the initial release of this document. Future revisions  
will be made in this subsection.  
Total Access 750/850  
Total Access OPTI-3  
Features  
MX2800/2810  
Features of the PS/BC, P/N 1175043L3, include the  
following:  
NIU3 (single mount housing, 3-slot shelf, 12-slot shelf)  
Battery Backup Units  
Compact design.  
Refer to your product documentation to verify compatibility  
with the PS/BC.  
Versatile mounting arrangements.  
All mounting hardware included.  
Built-in fuse.  
Multi-feature status LED.  
Modular connections.  
Positive ground.  
Uninterrupted power output (if battery backup  
connected).  
This device complies with part 15 of the FCC rules.  
Operation is subject to the following two conditions:  
(1) This device may not cause harmful interference, and  
(2) This device must accept any interference that may cause  
undesired operation.  
Changes or modifications not expressly approved by  
ADTRAN could void the user’s authority to operate this  
equipment.  
FCC and UL 60950 compliant.  
Complies with GR-1089-CORE and GR-63-CORE.  
Fuse  
A 3 Amp fuse on the back panel protects the unit from over  
current. The fuse isolates the AC input from the power supply  
in the event of a fault. The fuse is replaced by twisting the  
Trademarks: Any brand names and product names included in this document are  
trademarks, registered trademarks, or trade names of their respective holders.  
61175043L3-5A  
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adapter into the receptacle provided on the back of the Total  
Access 750/850 and plug the AC plug into the AC power  
source.  
MX2810 and NIU3 Systems  
Mounting  
An additional cable (ADTRAN P/N 1200657L10) is  
required for connecting the PS/BC to MX2810 and  
NIU3 systems.  
Total Access OPTI-3  
Mounting  
Rackmounted Systems  
An additional cable (ADTRAN P/N 1200657L10) is  
required for connecting the PS/BC to Total Access  
OPTI-3 systems.  
Use a mounting bracket and secure the Total Access PSU  
to the rack (19” bracket–P/N 1175050L1, 23” bracket–  
P/N 1175051L1). Orient the Total Access PSU with the  
cables facing away from the center and secure it with  
four #6 3/8-inch machine screws. A single bracket  
mounts up to 4 Total Access PSUs. Alternately, mount  
the Total Access PSU directly to the rack (or a  
backboard) using two or more of the mounting tabs.  
Rackmounted Systems  
Use a mounting bracket and secure the Total Access PSU  
to the rack (19” bracket–P/N 1175050L1, 23” bracket–  
P/N 1175051L1). Orient the Total Access PSU with the  
cables facing away from the center and secure it with  
four #6 3/8-inch machine screws. A single bracket  
mounts up to 4 Total Access PSUs. Alternately, mount  
the Total Access PSU directly to the rack (or a  
backboard) using two or more of the mounting tabs.  
Wiring  
The Total Access PSU (when ordered for use with these  
systems) is shipped with an adapter cable (ADTRAN  
P/N 1200657L10) that has a molded modular connector on  
one end and three ring type terminals on the other (see  
Wallmounted Systems  
Position the Total Access PSU (power cords oriented  
downward) and align the outer two holes (on the tabs at  
the corner of the Total Access PSU) with the two  
available machined holes on either side of the Total  
Access OPTI-3. Use two #6 3/8-inch machine screws  
(provided) to secure the Total Access PSU.  
The Total Access PSU powers a single bus (select either A or  
B). Connect the ring-type terminals to the respective termi-  
nals on the rear of the chassis using the screws provided. Use  
the wiring conventions in Table 2.  
Connect the DC wiring harness of the Total Access PSU to  
the adapter using the modular connectors and plug the AC  
plug into the AC power source.  
Wiring  
The Total Access PSU (when ordered for use with these  
systems) is shipped with an adapter cable (ADTRAN  
P/N 1200657L10) that has a molded modular connector on  
one end and three ring type terminals on the other (see  
MX2800  
Mounting  
An additional cable (ADTRAN P/N 1200657L2) is  
required for connecting the PS/BC to MX2800  
systems.  
Rackmounted Systems  
Use a mounting bracket and secure the Total Access PSU  
to the rack (19” bracket–P/N 1175050L1, 23” bracket–  
P/N 1175051L1). Orient the Total Access PSU with the  
cables facing away from the center and secure it with  
four #6 3/8-inch machine screws. A single bracket  
mounts up to 4 Total Access PSUs. Alternately, mount  
the Total Access PSU directly to the rack (or a  
backboard) using two or more of the mounting tabs.  
Figure 2. Cable for OPTI-3, MX2810, and NIU3  
The Total Access PSU powers a single bus (select either A or  
B). Connect the ring-type terminals to the respective termi-  
nals on the rear of the chassis using the screws provided. Use  
the following wiring conventions:  
RED  
-48VA or PWR  
RET  
BLACK  
GREEN  
Wiring  
The Total Access PSU (when ordered for use with this  
system) is shipped with an adapter cable (ADTRAN  
Ground Terminal  
Table 2. Wiring (OPTI-3, MX2810, NIU3)  
Connect the DC wiring harness of the Total Access PSU to  
the adapter using the modular connectors and plug the AC  
plug into the AC power source.  
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Issue 1, January 2004  
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P/N 1200657L2) that has a molded modular connector on one  
end and four soldered wire tips on the other (see Figure 3).  
“ground wire” in a customer equipment room. 18 AWG or  
larger ground wire is recommended.  
4. BATTERY BACKUP OPERATION  
The following information is applicable when using the  
PS/BC with any available ADTRAN BBU.  
Alarm and Battery Disconnect Relays  
Two relays support Power Supply operation:  
Figure 3. Cable for the MX2800  
Connect the soldered ends of the wires to the modular con-  
nector that fits into the chosen power bus using a small slotted  
screwdriver. (The power buses are labeled A and B on the  
rear of the chassis.) Use the following wiring conventions  
(holding the connector as it will be inserted in the chassis):  
Alarm relay  
Battery disconnect relay  
Alarm Relay and Alarm Signal  
The Alarm relay is provided for customer use. In normal op-  
eration the contact alarm relay is open. If an AC power failure  
occurs and the unit defaults to the battery backup, the relay  
will cycle open.closed once per second (that is one second  
open then one second closed). The tolerance on this cycle  
time is 25 percent.  
Left  
WHITE  
RED  
Battery Backup Alarm Wire  
Negative Terminal Wire  
Positive (RET) Wire  
BLACK  
GREEN  
Right  
Ground Terminal Wire  
This indicates the battery is discharging in support of the  
load. If battery voltage decreases to 45 V the relay stays  
closed to indicate the battery is becoming depleted. The relay  
will open automatically when normal AC voltage is restored.  
Table 3 summarizes the alarm relay operation.  
Secure the ends of the wires and plug the connector into the  
chassis on the desired power bus (A or B). Connect the other  
end to the DC wiring harness of the PSU wiring harness and  
plug the AC plug into the AC power source.  
Table 3. Alarm Relay Operation  
Battery Backup Units  
Condition  
Alarm Relay  
Open  
Mounting  
When using the PS/BC in conjunction with available  
ADTRAN Battery Backup Units (BBUs), one of the  
following mounting options should be used:  
Normal  
AC Power Failure/Battery  
Backup engaged  
Cycles open/closed  
once per second  
Wallmounting the PS/BC (refer to Wallmounting on  
Mounting the PS/BC to the product chassis containing  
the DC power supply.  
Battery voltage is less than  
40V  
Stays closed  
An alarm signal that cycles synchronously with the alarm  
relay is provided on the output cable. This signal, which is  
open during normal operation, cycles between open and  
ground during battery backup (as described for the alarm  
relay), and is ground when the battery voltage falls below  
45V.  
Mounting the PS/C to the BBU.  
Refer to your specific ADTRAN product system  
documentation to determine the optimal mounting solution  
for your system.  
GROUNDING INSTRUCTIONS  
Battery Fail Alarm  
For complete details on product grounding requirements, re-  
fer to the Network Turnup Procedure in your product System  
Manual.  
For battery backup systems that employ the optional Battery  
Test Assembly an alarm signal is provided to the PS/BC that  
indicates a failed battery (in need of immediate replacement).  
This signal is passed to the Alarm Relay and Output Alarm  
Signal. When a failed battery is detected, it is indicated by the  
Alarm Relay cycling open for 450 ms, then closed for 450 ms.  
Battery failure is also indicated by the output alarm signal  
cycling open to ground at the same rate.  
GR-1089-CORE Requirement  
An equipment grounding conductor that is not smaller  
in size than the ungrounded branch-circuit supply  
conductor is to be installed as part of the circuit that  
supplies the product or system.  
Battery Disconnect Relay  
The ground connector on the PS/BC provides an additional  
ground reference (the third prong of the AC plug is also  
grounded) and may be connected to the “ground bus” or  
The battery disconnect relay disconnects the battery pack  
from the system if the battery voltage falls below 40 VDC.  
This feature prevents damage tot he batteries. The batteries  
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Issue 1, January 2004  
61175043L3-5A  
     
will be recharged when normal AC voltage is restored and the  
relay will close when the battery voltage exceeds 40V.  
Certain alarm features on the power supply are still powered  
by the battery after the disconnect relay is opened. These  
features slowly drain the battery. If it is known that AC power  
will be unavailable for an extended periods (greater than a  
week), ADTRAN recommends that the battery be  
disconnected from the power supply to prevent over-  
discharge.  
5. COMPLIANCE CODES  
Code  
IC  
Input  
F
Output  
C
TC  
PC  
R
6. MAINTENANCE  
The AC/DC Power Supply and Battery Charger does not re-  
quire routing maintenance for design operation.  
ADTRAN does not recommend that repairs be attempted in  
the field. Repair services are obtained by returning the defec-  
tive unit to ADTRAN Customer Service.  
7. WARRANTY AND CUSTOMER SERVICE  
All Total Access Battery Backup systems have a 10 year war-  
ranty coverage on the product. This includes cables, hous-  
ings, PCBs, and any other ADTRAN-built components  
(excluding lead acid batteries).  
ADTRAN will repair and return this product within 10 years  
from the date of the shipment if it does not meet its published  
specifications or fails while in service (see ADTRAN Equip-  
ment Warranty, Repair, and Return Policy and Procedure,  
document 60000087-10A).  
For service, CAPS requests, or further information, contact  
one of the following numbers:  
ADTRAN Sales  
Pricing and Availability  
(800) 827-0807  
ADTRAN Technical Support  
Pre sales Applications/Post-sale Technical Assistance  
(888) 4-ADTRAN  
Standard hours: Monday-Friday, 7 a.m.-7 p.m. CST  
Emergency hours: 7 days/week, 24 hours/day  
ADTRAN Repair/CAPS  
Return for repair/upgrade  
(256) 963-8722  
Repair and Return Address  
ADTRAN, Inc.  
CAPS  
901 Explorer Boulevard  
Huntsville, Alabama 35806-2807  
61175043L3-5A  
Issue 1, January 2004  
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Issue 1, January 2004  
61175043L3-5A  

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