Mitel Sx-2000 Integrated Communications System Control Sheet Manual

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

							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  
						

							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 one or more yellow stripes. The grounding conductor is 
to be installed as part of the circuit that supplies that product or system and is to be 
connected to ground at the service equipment. 
The other conductor (see Note 3) shall comply with the general rules for grounding 
contained in Article 250 of the National Electrical Code, NFPA 70, or Section IO of the 
Canadian Electrical Code, CSA C22.1, but shall not depend on the cord and plug of the 
product. 
Notes: 1. There are two grounding conductors required to be installed with this equipment. 
One ground conductor is provided as part of the three wire 15 A branch circuit 
from which the product derives ac power. The other ground conductor is the 
supplementary or telecommunications ground. 
The SX-2000 FD Control and DSU cabinets do not require separate and inde- 
pendent equipment grounding conductors. The supplementary ground is only 
required if the cabinet contains telecommunications interfaces that connect to 
exposed or outside plant leads. These generally include LS/GS and DID trunk 
cards and OPS line cards. Please refer to Figure 1-l 4. 
The power cord for this product should only be replaced with one having the 
same number of conductors, gauge, insulation and usage ratings. 
The telecommunications ground conductor shall be installed before installing 
other telecommunications wiring to the system. Multicabinet system installations 
may share a common ground conductor. Refer to Practice 912X-O6&20O-NA, 
Installation, for specific instructions for correct system grounding. 
2. This grounding conductor is provided as part of the ac power cord-set provided 
with the equipment. The size of this conductor is allowed as stated in the Na- 
tional Electrical Code (NEC) in the United States NFPA/ANSI 70 Section 
250-95, Exception No. 1 which provides for compliance through Section 240-4, 
Exception No. 1. The following symbol identifies the connection point for the 
safety grounding conductor: 
0 I 
3. This grounding conductor is referred to as the telecommunications ground or 
supplementary ground as permitted in Section 250-91 (c) of the NEC. This shall 
be an insulated #6 AWG, green or green and yellow striped wire which is to be 
connected to the grounding stud within the cabinet. The following symbol is lo- 
cated adjacent to the stud to identify the connection point for the system 
grounding conductor: 
I 
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							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 ensure 
that the available cable slack is not tied back into the cable form. 
Table l-l Control Cabinet Grounding Cables (SX-ZUUUSG System) 
ber adjacent to Con- 
bar are counted 
Shelf 4 ground lug, lo- See Figure l-6 and 
cated on the shelf back- 
Page 1 of 2 
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							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; (i.e., ground source), and the safety ground of the control cabinet. 
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							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. 
5. IOAWG Reference ground Energy dumping Maintenance unit ground See Figure 14. 
(4-connecter loop ground bar position 7. lug, located on the unit’s 
cable) 
backplane. 
Shelf 4 ground lug, lo- See Figure l-6 and 
cated on the shelf back- Figure l-8. 
plane.* 
Shelf 3 ground lug, lo- See Figure l-8 and 
cated on the shelf back- Figure l-8. 
plane 
Shelf 2 ground lug, lo- See Figure l-8. 
cated on the shelf back- 
plane.* 
Shelf 1 ground lug, lo- See Figure l-8. 
cated on the shelf back- 
plane. 
6. 10 AWG* Energy Dumping Energy dumping Upper energy dumping See Figure l-6 and 
Ground (Shelf 2) ground bar position 8. ground lug, located on Figure l-8. 
the backplane of Shelf 2. 
7. 10 AWG* Energy Dumping Energy dumping Lower energy dumping See Figure l-8 and 
Ground (Shelf 2) ground bar position 10. ground lug, located on Figure I-8. 
the backplane of Shelf 2. 
8. 10 AWG Energy Dumping Energy dumping Upper energy dumping See Figure 14 and 
Ground (Shelf 1) 
ground bar position 11. ground lug, located on Figure l-8. 
the backplane of Shelf 1. 
9. 1OAWG Energy Dumping 
Energy dumping Lower energy dumping See Figure l-8 and 
Ground (Shelf 1) 
ground bar position 13. ground lug, located on Figure l-8. 
the backplane of Shelf 1. 
*The requirement for this cable is dependent on which configuration options are employed. 
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							Important Safety Instructions 
I I ‘P”P 060 6 
Q6Q Q6Q 1 
BBOlBlRl 
Figure 14 SX-2000 SG System Ground Connections 
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							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 
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							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 
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							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 power ground to the power distribution unit and an analog/digital ground to the 
circuits mounted in the shelves of the cabinet. 
Energy Dumping Grounds connect to the chassis of the cabinet and to the EDG studs 
on each shelf in the cabinet and provide a path to ground for high voltages which may 
appear on lines external to the cabinet, 
Table 
1-3 and Table 1-4 provide the steps required to safely ground SX-2000s ac and 
dc systems. Refer to Figure 1-9 when using the tables. 
203 1-16 
Revision 0 9125-060-203-NA Issue 1