Modifications reserved
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OPM_SGS_ISG_M75_M75_2US_V010.doc
Installation Guide
SG Series 750 UL S2
&
SG Series 750 T12 UL S2
3.10.3 Control bus cable location
WARNING !
This operation must be performed by QUALIFIED SERVICE PERSONNEL ONLY before
the initial start-up.
ENSURE THAT THE UPS INSTALLATION IS COMPLETELY POWERED DOWN.
SGS_750_RPA
control bus cab
le_GE_01a_US
Q1
Next parallel unit
Rectifier cabinet
18
2
19
20
89
7
22
11
1
21
10
2
1
2
3
4
3
4
14
15
34
16
17
56
12
12
13
1
Fig. 3.10.3-1 View electronic module on intermediate unit
Access to the control bus
connection.
The control bus connection
between parallel units must be
made on the
electronic module
“
P34 – Bus Interface (IM0048)
”
situated at the inside of the UPS
door.
S
G
S
_750_R
P
A
control bus cable_02U
S
Next parallel unit
A
B
JA
JA2
JB2
JB1
JA1
JB
Fig. 3.10.3-2 Front view electronic module on intermediate unit
Control bus cables connection.
•
Plug the cables
JA
(1/2/3/4/5)
and
JB
(1/2/3/4/5)
onto the RJ
connectors
JA
and
JB
located
on parallel bus PCB
“
P34 – Bus
Interface (IM0048)
”
(going to
“P13 – RPA Board”
J52(A)
and
J62(B)
).
•
Fix both cables
JA
(1/2/3/4/5)
and
JB
(1/2/3/4/5)
to parallel
bus socket connecting the
cable shield to ground by
means the cable clamps “
A
“.
