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Mitel Sx-2000 Integrated Communications System Control Sheet Manual

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Page 21

Important Safety Instructions 
Redundant 
Cotid Node 
Non-Redundant 
Cm6nl Node 
Figure 1-4 SX-2000 FD System Circuit Card Locations in the Control Node  

Page 22

Safety Instructions 
Refer toTable l-11, DSUs, and Table 1-12, I 
fa lists of approved cards. ICS, 
Figure I-5 SX-2000 FD System Circuit Card Locations in the Peripheral and DSU 
Nodes  

Page 23

Important Safetv Instructions 
Equipment Grounding 
General Description 
1.5 Redundant and independent equipment grounding conductors (see Note 1) are to be 
installed between the product and the wiring system ground. 
One of the equipment’s grounding conductors shall be an insulated grounding 
conductor (see Note 2) that is not smaller in size and is equivalent in insulation material 
and thickness to the grounded and ungrounded branch circuit supply conductor, except 
that it is green with or without...

Page 24

SX-ZULU SG Grounding 
Table 1-I and Table 1-2 detail the grounding cables for control and peripheral 
cabinets. Refer to Figure 14, Figure l-7, and Figure 1-8 when using the tables. 
Safety ground cables are connected to the chassis of the cabinet and units within the 
cabinet via ground studs which are located at relevant points on the equipment. 
Cables which terminate on shelf converters have sufficient length to prevent 
unnecessary cable strain when the door is opened. Care should be exercised to...

Page 25

Important Safety Instructions 
Table l-l Control Cabinet Grounding Cables (SX-2000 SG System) 
(continued) 
helf 2 +5 VR rail, lo- 
See Figure l-6 and 
on the shelf back- 
Upper energy dumping See Figure l-6 and 
Page 2 of 2 
*The requirement for this cable is dependent on which configuration options are employed. 
Notes: 1. Cable length must not exceed 50 feet. 
2. This cable should be a continuous conductor which has a total resistance of less than 0.5 ohms when 
measured between its point of origin;...

Page 26

Safety instructions 
Table l-2 Peripheral Cabinet Grounding Cables (SX-2000SG System) 
STEP GAUGE FUNCTION FROM TO REMARKS DONE 
1. Repeat Steps 2 through 11 and 14 through 22 in Table 1-l. 
2. 4 AWG System ground Peripheral cabinet sys- Peripheral cabinet over- 
tern ground bar. head ground bar. 
3: 4 AWG System ground Control cabinet over- 
Peripheral cabinet over- 
head ground bar. 
head ground bar. 
4. 4 AWG 
Safety ground Control cabinet safety Peripheral cabinet safety 
ground stud. 
ground stud....

Page 27

Important Safety Instructions 
I I ‘P”P 060 6 
Q6Q Q6Q 1 
BBOlBlRl 
Figure 14 SX-2000 SG System Ground Connections 
912!5-060-203-NA Issue 1 Revision 0 203 1-13  

Page 28

Safety Instructions 
0 0 
0 0 
0 
0 02 
B 
5 
0 0 
0 0 
0 
II 
I, - 
c - - I[ 
, - - 1 
0 
n 
I’ II 
- 0 0 
c - - - -11 
ts=== 
c - - : -‘I 
c - - II 
0 
c - - - -rl 
EEZ 
7 20 
BE011 0 
Figure l-7 SX-2000 SG Control Backplane 
203 1-14 
Revision 0 9125-060-203-NA Issue 1  

Page 29

Important Safety Instructions 
cl ::a: l *eoo* 
:::::: 
cl :::::: 
IL - 11 
I, - - - -,I 
I - - - --I 
I’ - 11 
I’ - - - 1, 
BE0109 
Figure 14 SX-2000 SG Peripheral Backplane 
9125-060-203-NA Issue 1 Revision 0 203 1-15  

Page 30

Safety Instructions 
SX-2000 S Grounding 
Two separate grounding paths must be provided to the SX-2000 S system. 
l Building (approved) ground 
l Electrical (safety) ground 
Figure l-9 shows the grounding arrangements for the SX-2000 S system. 
The building (approved) ground path is completed by a customer-supplied conductor 
which terminates on the Power Distribution Unit system ground terminal, located on the 
rear of the cabinet. The system ground is distributed within the cabinet to provide a-48 
Vdc...
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