Toshiba Strata Dk14, Dk40i, Dk424 Installation And Maintenance Manual

Strata DK I&M 5/995-1
DK424 Installation
DK424 Installation5
This chapter explains how to install the Strata DK424 system. It includes information on site 
requirements and provides installation instructions for various cabinet configurations. It also 
explains how to install ground wiring, AC power cabling, reserve power (Battery Backup) cabling, 
and Printed Circuit Board (PCB) cabling.
Inspection
When the system is received, examine all packages carefully and note any visible damage. If any 
damage is...

DK424 Installation
Site Requirements
5-2Strata DK I&M    5/99
Site Requirements
Input Power
The DK424 requires an input power source of 115VAC ± 10 VAC, 50/60 Hz, 17.5 amps. The 
system requires one or two AC outlets that must be dedicated to system use, fused, and grounded. 
See “Power Supply Installation” on Page 5-8 for complete AC power cabling, ground wiring and 
battery installation instructions.)
CAUTION!To avoid accidental power turn-off, it is recommended that an ON/OFF wall 
switch not be used...

DK424 Installation
Site Requirements
Strata DK I&M 5/995-3
DK424 Installation
24
24
78
6 14.5
23.6
11.75 
13.5
Wall
Floor
Front View Top View
23.6
Cabinets9.75 
36
Minimum Clearance Requirements
(Wall Mounting)
24
24
75
3
Wall
Floor
Wall
Wall
Front View Top View
23.6
Cabinets
36
23.6
Minimum Clearance Requirements
(Floor Mounting)
3 Floor
Mount
Stands
(RFMF)
2 Brackets
     (RWBF)
1451
Expansion
Cabinet
Expansion
Cabinet
Expansion
Cabinet
Expansion
Cabinet
Expansion
Cabinet
Expansion
CabinetBase
Cabinet...

DK424 Installation
Site Requirements
5-4Strata DK I&M    5/99
Electrical/Environmental Requirements and Characteristics
See Table 5-1 for the DK424 electrical/environmental requirements and characteristics.
Table 5-1 Summary of Electrical/Environmental Characteristics
DK424 Primary Power 
Input AC
AC amps for seven-cabinet system
AC frequency
Watts per cabinet (continuous)
Watts for six cabinet system (continuous)115VAC 
± 10VAC
20 amp circuit
50/60 Hz
180
845
DK424 Maximum Peak AC Input Current 
1...

DK424 Installation
Site Requirements
Strata DK I&M 5/995-5
DK424 Installation
Cable Lengths
The Base and optional Expansion Cabinets must be placed within the allowed maximum distance 
of each other as designated by Ta b l e  5 - 2. 
Table 5-2 Station Loop Requirements
DeviceInterface PCB
CircuitsNo. of Wire Pairs
(use 24 AWG 
twisted pair)Max Loop 
Resistance 
(including 
device)
Maximum Distance from 
Cabinet to Device
Digital telephones
1
1. Two-pair wiring or optional telephone power supply is...

DK424 Installation
Site Requirements
5-6Strata DK I&M    5/99
Network Requirements
The system network requirements are provided in Table 5-3.
Table 5-3 DK424 Network Requirements
PCB/InterfaceFacility Interface CodeNetwork JackRinger 
EquivalenceUniversal Service 
Order Code
PESU/RSTU2/RDSU1
(Off-premises Station)
1. Only PESU circuits 1 and 2, and RDSU circuits 1~4 provide Off-premises Station (OPS) capability. PESU must use OL13A or 
equivalent line conditioning for OPS connection. RDSU must use OL13A...

DK424 Installation
Cabinet Installation Considerations
Strata DK I&M 5/995-7
DK424 Installation
Cabinet Installation Considerations
The Base (DKSUB424) and Expansion Cabinets (DKSUE424) can be wall or floor mounted. To 
make it easier to add cabinets (after the initial installation) when a customer needs to expand, 
install the Base Cabinet on top for wall-mount installations and on the bottom for floor-mount 
installations.
The dimensions of the Base and Expansion Cabinets are:
Height: Base Cabinet: 11...

DK424 Installation
Power Supply Installation
5-8Strata DK I&M    5/99
Power Supply Installation
The Base and Expansion Cabinets are shipped from the factory without the power supply installed. 
The DK424 cabinets use the same power supply (RPSU280 and/or RPSU424) as the DK280.
NoteRPSU280 and RPSU424 are fit, form, and functionally the same. They can be 
interchanged and mixed in DK280 and DK424 systems.
ä
To install power supplies in cabinets of new or installed systems
1. Remove the power supply from...

DK424 Installation
Power Supply Installation
Strata DK I&M 5/995-9
DK424 Installation
Right
Front
Right Side
Cover
Top Cover
(Base Cabinet Only)
Front
Cover
Remove this
screw to remove
the front cover
Loosen three screws 
to remove front coverLoosen two screws
to remove the side covers
(right and left side covers)
Loosen four screws to
remove the top cover:
Note:
Do not remove the top 
cover if the Base Cabinet 
is the top cabinet.
Shift cover 
left to remove 
front cover.
Intercabinet Power Supply...

DK424 Installation
Power Supply Installation
5-10Strata DK I&M    5/99
1
2
3-24VPOWER
+5V
-5V
AC INFGDC OUT
+
BATT-
ON
OFF
FG Wire and Spade Lug
(Functional Ground)
DC Out Connector
FG Wire Holder –24V Circuit
Breakers
Power Indicator
LEDs (Green)
FG Screw (3)
R11 PCTU S11 S12
S13 S14 S15 S16
R11 S11RCTU S12 S13 S14 S15 S16
Bottom (2)
Mounting
Holes
Top (2)
Mounting
Holes
Jumper with wire must be 
installed only in base cabinet 
power supply using this 
connector
Jumper with no wire must be 
installed in...