NEC Neax 2400 Imx Installation Manual

							NDA-24234 CHAPTER 3
Page 71
Revision 3.0
INSTALLATION PROCEDURE
This NAP explains the procedures for installing the MDF.
NAP-200-007
Sheet 1/1
Installation of the MDF
START
Install the MDF at the predetermined location on the floor or wall. Be sure to check the quantity of 
accessory items such as arresters, block terminals, etc.
Install the MDF, taking into consideration the locations of lead-in holes for Local Cable, C.O. lines, Tie 
Lines, and Cable Running Routes.
MDF Line Protector Ground must be separated from the Communication Ground connected to the 
rectifier.
END 
						

							CHAPTER 3 NDA-24234
Page 72
Revision 3.0
INSTALLATION PROCEDURE
This NAP explains the following work items.
Connection of Power and Ground Cables
Connection of DC-DC Converter for Telephone sets equipped with Message Waiting Lamps
End Jointing of Power and Ground Cables
Branching of Power Cables
1. CONNECTION OF THE POWER AND GROUND CABLES
CAUTION:
Grounding circuit continuity is vital for safe operation of telecommunication equipment.
Never operate telecommunication equipment with grounding conductor disconnected.
NAP-200-008
Sheet 1/13
Connection of Power and Ground 
Cables from the Power Equipment
Cable Running Run the power and ground cables per 
Figure 008-1 and Figure 008-3.
Running of power and ground cables to the 
Power Receiving Terminals in the BASEUAn example of cable running on a free access or 
computer floor is shown in Figure 008-1.
Confirm that the Circuit Breaker (NFB) of the Rectifier is OFF.
Connection of the power and ground cables Connect the power and ground cables to the 
Power Receiving Terminals on the BASEU per 
Figure 008-3.
Connect the power and ground cables to the 
output terminals of the Rectifier.
Check  after  cable  connections Using a continuity tester, confirm that the -48 V 
power cable is not shorting to the G power cable 
or FE ground cable.
START
END 
						

							NDA-24234 CHAPTER 3
Page 73
Revision 3.0
INSTALLATION PROCEDURE
Figure 008-1  Detail of Cable Running
NAP-200-008
Sheet 2/13
Connection of Power and Ground 
Cables from the Power Equipment
P
OWER
 A
N
D
 
GR
O
U
N
D
 
CABL
ES
POWER RECEIVING TERMINALPBX
PIM
REARLPM 
						

							CHAPTER 3 NDA-24234
Page 74
Revision 3.0
INSTALLATION PROCEDURE
Figure 008-2  Detail of Cable Running (Multiple IMG Configuration)
NAP-200-008
Sheet 3/13
Connection of Power and Ground 
Cables from the Power Equipment
REAR REAR
REARLPM
IMG3
REARTSWM
IMG2
IMG1
IMG0 POWER RECEIVING TERMINAL
T
-B
R
AN
C
H
 C
ON
N
E
C
TI
O
N
P
OWE
R
 A
N
D 
G
ROU
N
D 
C
AB
L
ES
M
AI
N C
AB
L
E
DUMMY
DUMMY 
						

							NDA-24234 CHAPTER 3
Page 75
Revision 3.0
INSTALLATION PROCEDURE
Figure 008-3  Connection of Power and Ground Cables to Power Receiving Terminal
NAP-200-008
Sheet 4/13
Connection of Power and Ground 
Cables from the Power Equipment
Note 1:For 1/2 PIM configuration, connect the cable only to the A terminal.
Note 2:An example of End Jointing (using A Type-Clamp terminal) is explained in Section 3 of this NAP.
+80V:Terminal
-48V:B Terminal
G:B Terminal
-48V:A Terminal
G:A Terminal
FE Terminal
POWER AND GROUND CABLES
POWER RECEIVING TERMINAL
REAR VIEWBASEU
PIM0
LPR
Note 1 
						

							CHAPTER 3 NDA-24234
Page 76
Revision 3.0
INSTALLATION PROCEDURE
2. CONNECTION OF DC-DC CONVERTER FOR TELEPHONE SETS EQUIPPED WITH MESSAGE WAITING
LAMPS
NAP-200-008
Sheet 5/13
Connection of Power and Ground 
Cables from the Power Equipment
START
Cable Running Referring to Figure 008-4, run the power and 
ground cables.
Removal of shorting piece and cable 
connectionReferring to Figure 008-5, remove the shorting 
piece from the +80 V connector of PZ-M371 card, 
and then connect the cable provided on the +80 V 
Power Receiving Terminal Block to the +80 V 
connector.
Confirm that the Circuit Breaker (NFB) of the Rectifier is OFF.
Connection of Power and Ground Cables Referring to Figures 008-4 and 008-5, connect the 
power and ground cable to each terminal of the 
equipment.
Check after cable connections Using a continuity tester, confirm that the –48 V 
and +80 V power cable are not short-circuiting with 
the G power cable or FE ground cables.
END 
						

							NDA-24234 CHAPTER 3
Page 77
Revision 3.0
INSTALLATION PROCEDURE
Figure 008-4  Example Connection Diagram-DC-DC Converter for Message Waiting Lamps
NAP-200-008
Sheet 6/13
Connection of Power and Ground 
Cables from the Power Equipment
Note:The current capacity of the DC-DC Converter is calculated by multiplying the (current capacity of
the message waiting lamp) by the number of telephone sets.
PBX
IV(WHITE)+80V
DC-DC 
CONVERTER
OUTPUT
INPUT G +80V
G –48V
IV (R)
IV (BL)
IV (G) TO RECTIFIERF 
G 
						

							CHAPTER 3 NDA-24234
Page 78
Revision 3.0
INSTALLATION PROCEDURE
Figure 008-5  Removal of Shorting Piece and Cable Connection
NAP-200-008
Sheet 7/13
Connection of Power and Ground 
Cables from the Power Equipment
BASEU Power Receiving Terminal Block
Remove the shorting piece
Connect the Cable to the +80V Connector of PZ-M371 cardPZ-M371
+80V +80V
Power Cable 
						

							NDA-24234 CHAPTER 3
Page 79
Revision 3.0
INSTALLATION PROCEDURE
3. END JOINTING OF POWER AND GROUND CABLES
NAP-200-008
Sheet 8/13
Connection of Power and Ground 
Cables from the Power Equipment
START
Stripping  of  Insulation  Sheath Strip the wire to exceed the length of the terminal body 
by 1 - 2 mm (1/8 inch).
Clamping Referring to Figure 008-6, place the terminal body on 
the die with the soldered part facing upward.
Referring to Figure 008-7, insert the stripped wire into 
the terminal body up to the insulation-sheath edge, and 
clamp the terminal.
Wipe the terminal with a dry cloth.
END
WIRE SHEATH
CONDUCTOR
CLAMP TERMINAL
1/8 inch (1 - 2 mm) 
						

							CHAPTER 3 NDA-24234
Page 80
Revision 3.0
INSTALLATION PROCEDURE
Figure 008-6  Placing the Clamp Terminal on the Die
Figure 008-7  Clamping Method
NAP-200-008
Sheet 9/13
Connection of Power and Ground 
Cables from the Power Equipment
CONVEX DIE
SOLDERED PART
TERMINAL
CONCAVE DIE
1/8 inch (1 - 2mm)
CONVEX DIE
A
A
INSULATION SHEATH
TERMINAL
CONCAVE DIE
SOLDERED PART
CLAMPED PORTION
CLAMPED PORTION
CONDUCTOR
A-A