NEC Xen Alpha Installation Manual

							Installation Manual  •  •  •  KSU Installation Page  27A6-506000-642-01
Wall Mounting the KSU
Before wall mounting the KSU, it is recommended that the wall mounting screws be
attached to the piece of plywood (13 mm thick or more) or attached to a sturdy wall.
1. Using two of the four screws (provided with the KSU) attach the wall mount template
to the wall. (Refer to Figure 2-3:: Attaching the Wall Mounting Bracket for the KSU to the
Wall, Pg 27.)
2. While holding the KSU, hang the upper two openings that are located in the KSU base
over the wall mount template. (Refer to Figure 2-4:: Attaching the KSU to the Wall
Mount Template, Pg 27.))
Figure 2-3: Attaching the Wall Mounting Bracket for the KSU to the Wall
Figure 2-4: Attaching the KSU to the Wall Mount Template 
						

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3. Using the other two provided screws, secure the KSU to the wall mount template by
screwing the lower two openings located in the KSU base. (Refer to Figure 2-5::
Securing the KSU to the Wall Mount Template, Pg 28.)
Installing or Replacing the Internal Backup Batteries
These batteries provide power for the system in case of a power outage. Fully charged
batteries provide power for approximately 30 minutes.
1. Be sure the system is turned off during the installation process.
2. Remove the cover by loosening the two bottom screws with a philips head screwdriver
(the screws remain in the cover to avoid misplacing them). Pull the cover away from the
KSU and lift upward.
3. Remove the screw that is attached to the grounding cable and loosen the second screw
that secures the metal plate to the batteries. Slide the metal plate until it clears the
remaining screw and lift upward to remove the metal plate.
4. If replacing existing batteries, detach the battery cables from the connector terminals
CN3 (BATT1) and CN4 (BATT2). Lift out the old batteries.
5. Insert the new batteries into the slots. Place the notched end of the battery toward the
casing on the KSU. Place the battery cables between the inside of the battery and the
posts located on the inside of the battery casing.
Figure 2-5: Securing the KSU to the Wall Mount Template
Figure 2-6: Inserting a New Battery in the KSU Unit 
						

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6. Replace the metal plate on top of the new batteries. Place the grounding cable on top of
the hole and tighten the screw using a philips head screwdriver.
7. Attach the battery connectors to CN3 (BATT1) and CN4 (BATT2) battery terminals.
Insert the battery connectors over either battery terminal. The connector tab should be
placed over the terminal tab. There is only one direction the tabs can be placed into the
connector terminals, therefore you cannot attach them incorrectly.
8. Attach the cover and tighten the screws.
9. Turn the power on.
IMPORTANT SAFEGUARDS FOR BATTERY DISPOSAL
DO NOT PLACE USED BATTERIES IN YOUR REGULAR TRASH! THE PRODUCT YOU
PURCHASED CONTAINS A NICKEL-CADMIUM OR SEALED LEAD BATTERY. NICKEL-
CADMIUM OR SEALED LEAD BATTERIES MUST BE COLLECTED, RECYCLED OR
DISPOSED ON IN AN ENVIRONMENTALLY SOUND MANNER.
The incineration, land filling or mixing of nickel-cadmium or sealed lead batteries with the
municipal solid waste stream is PROHIBITED BY LAW in most areas. Contact your local
solid waste management officials for other information regarding the environmentally sound
collection and disposal of the battery.
CAUTION
Do not short circuit batteries. The battery could explode and cause damage to personnel
and equipment.
Danger of explosion if battery is incorrectly replaced. Replace only witht he same or
equivalent type recommended by the manufacturer. Dispose of used battereis according to
the manufacturer’s instructions.
Figure 2-7: Attaching the Battery Connectors 
						

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Connecting External Backup Batteries
1. Disconnect the Built-in Backup Battery Cables from CN3 and CN4 on the Power
Supply. Position the loose battery cables safely inside the KSU.
2. Mount the external battery into the External Battery Cabinet (AKB-A-ZD KTU), as
follows:
Note:Two batteries must be connected per KSU and each cabinet houses just one 
battery.
a.) Remove the four cover screws.
b.) Pass the battery cables through the hole in the left side of the cabinet and connect
to the battery terminals.
Note:RED CABLE TO⊕
BLUE CABLE TO−
c.) Mount the battery into the cabinet and secure it using the U-shaped bracket with
two screws.
d.) Secure the battery cables using the grommet supplied.
Figure 2-8: 
Figure 2-9: 
Figure 2-10:  
						

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3. Mount the two External Battery Cabinets close to the KSU using the wood screws
supplied and replace the cover using the four screws. (Refer to Figure 2-11:: Mounting
the External Battery Cabinet, Pg 31.)
4. Connect the two external cable assemblies to CN3 and CN4 on the power supply.
(Refer to Figure 2-12:: Connecting External Batteries, Pg 31.)
Figure 2-11: Mounting the External Battery Cabinet
Figure 2-12: Connecting External Batteries 
						

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Grounding Requirements
The KSU must be properly grounded. This can be achieved by a correctly wired AC outlet. If
there is any uncertainty, obtain advice from a licensed electrical contractor. Where a ground
(other than conduit ground) is used, a grounding terminal is provided on a B614-B13 KSU.
(Refer to Figure 2-13:: KSU Grounding, Pg 32.)
Connecting the B614-B13 KSU
The CPU is the central processing unit (CPU). An 8-bit microprocessor executes the
programs stored on the ROM ICs to control the whole system, while transferring data to and
from other KTUs.
The KSU consists of a main control section and a Time Division Switch (TDSW) section. It
also has an external ringer interface six 4-party conference circuits, two CO/PBX interfaces,
six station interfaces and two power failure transfer circuits.
The RAM memory, on the CPU is back up with a non-rechargeable lithium battery which will
retain the memory for up to 18 months.
Switch Settings
Before programming System Data, the non-rechargeable lithium battery must be switched
on (SW1→HOLD) to allow memory content retention in case of a power failure or brownout.
Failure to activate the backup battery circuit may result in System Data being reset to the
default values, the status of all stations will reset to the default values and the data
programmed on the station may clear if a power failure or brownout occurs. (If programming
using a Multiline Terminal, refer to Chapter 2, Programming in this manual for instructions.)
!
NOTE:Wait at least 30 seconds after turning on system power before changing 
memory switch SW1 from CLEAR to HOLD.
When the KSU is removed for long term storage, switch off the lithium battery (SW1→CLEAR).
This will prevent the battery from constantly discharging. The battery, when fully charged will
retain memory contents for a minimum of three months. (Refer to 
Figure 2-14:: KSU Switch
Settings, Pg 33
 and Table 2-1: KSU Switches and Connections, Pg 33.)
To clear the system memory, use the following procedure.
1. Turn system power OFF.
2. Change SW1 to CLEAR position.
3. Turn system power ON.
Figure 2-13: KSU Grounding 
						

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4. After waiting at least 30 seconds, change SW1 to HOLD position.
Table 2-1  KSU Switches and Connections
Figure 2-14: KSU Switch Settings
NameDefault SettingDescription/Purpose
SW1
CN1
CN2
CN3
CN4
CN5
CN6
CN7
CN8
CN9
CN11
CN12
CN13
CN14
CN15
CN16
CN17
CN18
CN20CLEAR
ST 16
EXT.SPK
MOH/BGM
CO 12
FAX/PFT 12
RLY
ESI
DPH
VRS
VMS
TRF
PBR
External ROM
MIF
SLI
COI
BRT
COI
BRT
CID
PSUSystem Memory Battery Backup (Hold/Clear)
ESI Station Ports 16
External Paging Speaker
Music on Hold and Background Music Source
Analogue Trunks 12
Fax or Power Fail Transfer Ports 12
External Paging Amplifier or External Ringer Control Relay
ESI(8)-B13 ETU
DPH-B13 ETU
VRS-B13 ETU (Future Use)
VMS(2)-B13 ETU
TRF-B13 ETU
PBR-B13 ETU
Flash ROM Card
MIF-B13 ETU
SLI(2)-B13ETU
COI(2)-B13 ETU
BRT(1)-B13 ETU
COI(2)-B13 ETU
BRT(1)-B13 ETU
CID(2)-B13 ETU
Power Supply CN103 
						

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Telephone Connections
The B614-B13 ETU supports the connection of 6 digital extensions via CN1. Each port
requires a single twisted pair cable and the connection is not polarity conscious. (Refer to
Figure 2-15:: Telephone Connection, Pg 34) 
Figure 2-15: Telephone Connection
Exchange Line connection
The B614-B13 ETU supports the connection of 2 analogue exchange lines (Central Office or
PABX) via CN2. This 2-wire connection is not polarity conscious. (Refer to Figure 2-16::
Exchange Line Connection, Pg 34.)
Figure 2-16: Exchange Line Connection
Power Fail Telephone and Fax Connection
The B614-B13 ETU supports the connection of 2 analogue telephones via CN2 for use
during period of power failure (i.e. when AC power is lost and the system backup batteries
are depleted). Connection of each 2 wire analogue telephone is shown in Figure 2-17::
Power Fail Telephone and Fax Connection, Pg 35. In the event of a power failure the
analogue telephones are connected immediately to a CO/PBX line as follows:
FA X /P FT 1! CO1
(CN2, pins 5-6)
FA X /P FT 2! CO2
(CN2, pins 7-8)
A detailed explanation of the operation and usage of Power Fail Telephones is given at the
end of Section 5. 
						

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If not required as power fail telephone ports, the FAX/PFT ports of CN2 can be used to connect
other analogue equipment such as faxes and modems. These devices can make and receive
calls as per the normal operation, when the associated trunks are not in used by other users of
the system. Note that each device is dedicated to a trunk (CO1 or CO2) as indicated above. Any
activity by these devices will be shown as a busy trunk status on the handsets of other users on
the system.
Figure 2-17: Power Fail Telephone and Fax Connection
External Ringer and External Paging Control connection
The B614-B13 ETU supports the connection of an External Ringer, via CN3-RLY, which can
be used to activate a locally supplied loud sounding alarm. This alarm can be programmed
to sound while an incoming CO/PBX, DID or DIT call is ringing and is ideal for large or noisy
areas, or for the hearing impaired. The output of CN3 is a no-voltage relay contact operation
with the following specifications.
Cadence (Cycle): 1 second ON (closed)/2 seconds OFF (open)
Maximum Voltage: 24 Vdc
Maximum Current: 200 mA
Alternatively, CN3-RLY can be programmed to operate as an External Paging Amplifier
Controller. In this mode, the relay of CN3 will close when an external page is initiated and
will remain closed until the page is terminated. This no-voltage signal can be used to turn on
(and off) the locally supplied external paging amplifier. But not that the voltage and current
limits shown above will always apply!
Figure 2-18: External Ringer Connection
External Speaker Connection
The B614-B13 ETU provides one pre-amp level output for connection of an External Paging
System. This paging system would include as a minimum, a Line Isolation Unit, Audio
Amplifier and Speaker. As well as external paging, this speaker may also be sued as alert
upon incoming external calls. 
If On/Off control of the amplifier is required, Memory Block 001-0 must be set. Then when an
External Page is performed, that control relay will close providing a dry indication to the amplifier.
(Refer to External Ringer and External Paging Control connection.) 
						

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If a Paging Alert Tone is required to precede each External Paging message, Memory Block
002-3 must be set.
The paging equipment terminates onto the EXT.SPK connector of CN1 using a Special
Connector. If amplifier on/off control is required, this terminates onto the General Purpose
Relay connector (CN3-RLY), again using a Special Connector.
Connection of this equipment must be via a Line Isolation Unit with a Telecommunications
compliance label. The Baterford Electronics Model BE-104 is an example.
Figure 2-19: External Paging Connection
External Music-On-Hold (MOH)/Background Music (BGM) Source Connection
The B614-B13 ETU can be used to connect an external music source for use with the
Music-On-Hold and Background music facilities e.g. radio, CD player or tone source.
Connect two wires from the music source to the MOH/BGM connection of CN1 (using a Blue
Special connector). This is not polarity sensitive.