3.9.3 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.
Q1
Q2
SGSU_225
-300_S2_R
PA control
bus cable
_01
A
2
4
3
1
-
-
8 9 10
21
20
19
11
22
1
2
3
4
1 2 3 4 5
16
15
14
13
12
6
17
7
18
Fig. 3.9.3-1 View electronic module on intermediate unit
Access to the control bus
connection.
The control bus connection
between parallel units must be
made on the front of the
electronic module
fitted
behind the front doors.
To properly route the control
bus cables the safety screen
“
A
” must be removed.
JB1
JB2
JA1
JA2
A
Next parallel unit
A
JA
JB
SGSU_225-300_S2
_RPA control bus c
able_02US
Fig. 3.9.3-2 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
”
(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
“.
Modifications reserved
Page 34/40
OPM_SGS_ISG_M22_M30_2US_V010.doc
Installation Guide
SG Series 225 & 300 UL S2
