NEC Neax 2400 Imx Installation Manual

							NDA-24234 CHAPTER 2
Page 11
Revision 3.0
INSTALLATION DESIGN
Note 1:
When the rectifier is in the equalize state (charging the batteries), the output DC voltage should be 1.5 to
2 volts higher than the float voltage. For example: the voltages for floating and equalizing are listed below:
Float:  50.5 V DC
Equalize:  52 V DC 
(Refer to
 Note 2.)
Note 2:The Equalize voltage is 1.5 to 2 V higher when an EMF panel (Diode Drop) is utilized. When an EMF panel
is not provided, the Float and Equalize Voltage must be the same (50.5 V).
Note 3:The main source power is AC input.
Note 4:Noise present in the -48 V output from the rectifier should be less than 5 mV.
6.2 Current Consumption
The PBX operates on -48 V ±5 V DC which is supplied from external power equipment (the rectifier and the
battery).
Various DC voltages required within the system are provided by the DC-DC converter in each module. The DC-
DC converter, upon receiving the -48 V DC source power, converts it into various DC voltages and supplies
them to the associated circuits.
Figure 2-2 shows the current consumption of the PBX.
Figure 2-2   Current Consumption of the PBX
(AMPS)
35
30
25
20
15
10
5
100 200 300 400 500 600 700 800 900 1000
No. of PORTS DC
-48V 
						

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INSTALLATION DESIGN
6.3 Power Distribution Box Requirements
1. The Power Distribution Box (PDB) should be installed with the following considerations:
2. The AC power source service outlet and the fuse for the junction box should be provided independently of
any equipment other than the switching equipment.
3. A warning notice should be attached to be PDB circuit breaker so that it will not be turned off accidentally.
4. The Power Distribution Box should be installed at a location that is easy to reach.
5. The Power Distribution Box should be installed at a location where the connecting cables extending to the
switching equipment will not be broken accidentally.
6. The PDB cables should be run in such a way that they do not hamper the technician performing the instal-
lation.
7. The Personal Computer (MAT) must have a separate AC service outlet.
6.4 Grounding
System grounding must have a specific ground resistance and AC noise level and is to be connected to a prede-
termined terminal in the PBX.
Standard grounding requirements are shown below.
Communication grounding: Less than 1 ohm
Security ground for Module Group: Less than 1 ohm
Grounding for the line protector of the MDF: Less than 1 ohm
Note:The AC ripple of various types of grounding should be less than 1/2 V-pp.
7. MDF REQUIREMENTS
Either a self-standing or wall-mounted type MDF can be used. The MDF must be equipped with the following
types of terminal blocks.
Arrester board for C.O. lines and external lines
Test spring terminals for localization tests
Local Block terminals
The number of terminals is to be determined according to the circuit configuration of the PBX and the number
of local lines. 
						

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INSTALLATION DESIGN
8. INSTALLATION TOOLS
Table 2-2 shows the tools used in a typical NEAX2400 IMX installation.
Table 2-2  Typical Installation Tools
FUNCTION TOOLS PURPOSE
MarkingSteel Tape Measure
L-Square
Iron Square 
Iron LevelCenter Punch 
Step Ladder 
ScriberFor Leveling and 
Marking Plumb 
Line
DrillingElectric Drill 
Electric Vibration Drill 
Hammer 
Point Drill 
Drill Bit for ConcreteConcrete Chisel 
Drill Bit for Metal 
Power Cable Drum 
Extension CableDrilling
Module Group and 
Rack InstallationPlump Bob 
Jigsaw
Hacksaw Frame
Hacksaw Blade 
Flat File
Half Round File 
Set File 
Adjustable Angle WrenchFrame Cart 
Cutter
Set Wrench
Socket Wrench Set 
Step Ladder 
Phillips Screwdriver
Screwdriver 
Plastic HammerModule Group and 
Rack Installation
Power Cable 
InstallationClamping Tool
(for End Terminal,
Branch Terminal)Phillips Screwdriver 
Screwdriver 
CutterPower Cable 
Installation
See 
Note.
MiscellaneousCircuit Tester 
Pocket Measure 
Scissors 
Wire Clipper 
Cable Cutter 
Nipper 
Wir e St ri pper 
Round Nose Pliers 
Non-Metallic Stick 
Solder-Helper
Solder Sucker 
IC Clip
Mini Test ProbeTelephone Set 
Wo r k i n g  L a m p  
Wrapping Tool 
Unwrapping Tool 
Soldering Iron 
Soldering Iron Stand 
Connector Clamping Tool 
Logic Checker and Counter 
Pen Light
Precision Screwdriver (+)(-) 
IC Buzzer 
Tweezer 
Portable Field Service Kit 
						

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INSTALLATION DESIGN
9. SYSTEM ACCOMMODATION
9.1 System Accommodation
Module Group Configuration and Conditions for Configuration
The module group configuration of the PBX is shown in Figure 2-3, and the conditions for configuration are
shown in Table 2-3.
Figure 2-3   System Configuration
TO P U
PIM2 PIM3
PIM1
PIM0
TSWMFA N UIMG1
BASEU
max. 1536 ports 
max. 1152 portsmax. 768 portsmax. 384 ports
(2048 time slots)
(1536 time slots)(1024 time slots)(512 time slots)
TOPU
PIM2 PIM3
PIM1
PIM0
LPR FA N U 4-PIM
3-PIM
2-PIM
1-PIM FA N U TOPU
TOPU/FANU TOPU/FANU
BASEU BASEU
BASEU
BASEU LPRLPRLPR PIM0
PIM0PIM0 PIM1PIM1 PIM2
BSCMBSCMBSCMBSCM
FRONT VIEW
TO P U
PIM2 PIM3
PIM1
PIM0
LPM FA N UIMG0
BASEU
FRONT VIEWTOPU
PIM2 PIM3
PIM1
PIM0
DUMMYFA N UIMG2
BASEUTOPU
PIM2 PIM3
PIM1
PIM0
DUMMYFA N UIMG3
BASEU Fully Expanded System
TOPU: Top Unit
PIM Por t Interface Module
FANU Fan Unit
LPR/LPM Local Processor Rack/Module
BASEU Base Unit
TSWM Time Division Switch ModuleSingle IMG Configuration 
						

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INSTALLATION DESIGN
Note:
A NFILU is mounted in BASEU.
Table 2-3  Conditions for Configuration
UNIT NAME NUMBER OF MODULES CONDITIONS REMARKS
FANU
 (Fan Unit)PIM 
Less than two modulesMounted in TOPU
PIM 
Three or more modulesMounted in between the 2nd PIM and 
the 3rd PIM
2nd NFILU 
(Noise Filter)Less than two modules Not required
Three or more modules Mounted in BASEU
TOPU
 (Top Unit)Equipped with PZ-DK222 (KEY) and 
PZ-DK223 (DSP) Cards 
						

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Revision 3.0
INSTALLATION DESIGN
Figure 2-4   Time Slot, Group Number Assignment
Note 1:Extended Group No. can be used by FCH (PA-FCHA) card. For more detailed information, see
the “Fusion Network System Manual.”
Note 2:A PIM consists of 384 physical ports (512 total ports).
00 02 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
PIM
192 TS
16
32 TS/Physical ports
161616
1616
161616
32
32
16 32
1616 16
1616
16 16 16 3232 192 TS Slot No.
Number
of
Time Slots
(16)
PWR
(16)
PWR
00 02 04 05 06 07 08 09 10 11 12 13 14 1516 17 18 19 20 21 22 23
PIM
00
2602 04 06 08 10 Slot No.
(25) (24)
27
28 29
3031
0003 0105
0709
11
12 16 2021
02 04 06 08 1013 1714 15 19 23
18 22 01 03 05 07 1115 19
2023
14 18 22
13 17 21
12 16 Group No.
Extended
Group No.
 Time Slots are allocated for a PIM as shown below:
09
26 27
28 29
3031
TS/SW por ts48 TS/SW
48 TS/SW
Group Numbers are allocated 
for a PIM as follows: 
						

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INSTALLATION DESIGN
Figure 2-5   Face Layout (Single IMG Configuration)
PH-SW10 (TSW0) PH-SW10 (TSW1)
PH-PC36 (MUX0) PH-PC36 (MUX1)
PH-PC36 (MUX0) PH-PC36 (MUX0)PH-PC36 (MUX1) PH-PC36 (MUX1)
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
0005 01 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
TOPU
PIM 3
PIM 2
FA N U
PIM 1
PIM 0
LPM
BASEU
PA-PW54-A (PWR1)
PA-PW55-A (PWR0)PA-PW54-A (PWR1)
PA-PW55-A (PWR0) PA-PW54-A (PWR1)
PA-PW55-A (PWR0) PA-PW54-A (PWR1)
PA-PW55-A (PWR0)
00
01
020304
PH-PC40 (EMA)
PH-IO24 (IOC)
Note 
						

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Revision 3.0
INSTALLATION DESIGN
Figure 2-6   Face Layout of IMG0 (Multiple IMG Configuration)
P H -P C 3 6 (M U X 0 )P H -P C 3 6 (M U X 1)
PH-PC36 (M UX0) PH-PC36 (MUX1)
PH-PC36 (M UX0)
PH-PC36 (MUX0) PH-PC36 (MUX1)
PH-PC36 (M UX1)
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
TOPU
PIM 3
PIM 2
FA N U
PIM 1
PIM 0
LPM
BASEU
00 01 02 03 04
PA-PW54-A (PWR1)
PA-PW55-A (PWR0)PA-PW54-A (PWR1)
PA-PW55-A (PWR0) PA-PW54-A (PWR1)
PA-PW55-A (PWR0) PA-PW54-A (PWR1)
PA-PW55-A (PWR0) 
						

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INSTALLATION DESIGN
Figure 2-7   Location of Terminating Resistors on the TSWM Back Plane (Multiple IMG Configuration)
PWRB
MISC1B
MISC2B
MISC3B
MIO31
MUX003
MUX002MUX001
MUX000
MUX013MUX012 MUX011
MUX010MUX023
MUX022MUX021 MUX020MUX033
MUX032
MUX031 MUX030MUX103
MUX102MUX101
MUX100MUX113MUX112 MUX111 MUX110MUX123
MUX122MUX121MUX120MUX133
MUX132 MUX131MUX130
EMAFH
EXCLK0EXCLK1IOP0
IOP1MIO30
MIO20
MIO0
MIO21
MIO1 MISC3AMISC2A
MISC4B
MISC5BMISC5A MISC4AMISC1A
PWRA
PZ-M497 PKG SIDE0FA L M
ALM EMA
REAR VIEW
PZ-M497 PKG SIDE1
PZ-M497 PKG SIDE0
PZ-M497 PKG SIDE1 
						

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INSTALLATION DESIGN
Figure 2-8   Face Layout of IMG1 Front View (Multiple IMG Configuration)
PA-PW54-A (PWR1)PH-PC36 (MUX) PH-PC36 (MUX)
PH-PC36 (MUX) PH-PC36 (MUX)
PH-PC36 (MUX) PH-PC36 (MUX) PH-PC36 (MUX)
PH-PC36 (MUX)
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
00 0501 02 03 04 06 07 08 09 10 15 202319 22 18 17 16 11 1413 12 21
TOP U
PIM 3
PIM 2
FA N U
PIM 1
PIM 0
TSWM
BASEU
00 0501 02 03 04 06 07 08 09 10 15 20 2319 22 18 17 16 11 1413 12 21
PA-PW55-A (PWR0)
PA-PW55-A (PWR0)
PA-PW55-A (PWR0)PA-PW55-A (PWR0) PA-PW54-A (PWR1)
PA-PW54-A (PWR1) PA-PW54-A (PWR1)
PWRSW0PWRSW1MISC DLKC1
DLKC0GT0GT1 PLO1
TSW13
TSW12
TSW11
TSW10
TSW03
TSW02
TSW00 TSW01
MISC MISC MISCMISC
Note
Note:No circuit card is accommodated in Slot No. 02 of TSWM.
PLO0