Critical Power
Modifications reserved
Page 32/43
GE_UPS_ISG_LPS_3UL_20K_30K_2US_V010.docx
Installation Guide
LP33 Series 20 & 30 UL S2
4.9.4
RPA Parallel System - Control bus connection
WARNING !
This operation must be performed by trained personnel before the initial start-up
(ensure that the UPS installation is completely powered down).
Fig. 4.9.4-1 Access to the RPA board
Access to the RPA board
1 - Open the front door
“
A
”
of the UPS cabinet.
2 - Remove the front panel
“
B
”
.
3 - Remove with appropriate tool the metallic
window
“
C
”
from the metal screen
“
D
”
.
NOTE !
Put in place the front screen
“A”
paying attention to not damaging the
control bus cables.
Fig. 4.9.4-2 Bus connection RPA Parallel System
Bus connection RPA Parallel System
Connect the control bus cable between the parallel units as indicated in the diagram
Fig. 4.9.4-2
.
Provide that the connectors
J3
and
J4
are properly fixed with the included screws.
Fig. 4.9.4-3 Connection to Board P16
NOTE !
The jumper
JP1 - JP2 - JP3
must be
removed only on the intermediate units,
where the connectors
J3
and
J4
are both
inserted.
Do not insert or remove
J3
and
J4
from
the board
“P16 - Connector adapter RPA”
when the Parallel System is operating.
A
B
D
C
LPS33U_0
20-030_S2
_RPA conn
ection_01
L
P
S
33U
_030
-0
40_R
P
A
c
o
nnect
ion_G
E
_02
J4
J3
LP 33 Series
1
P1
P13
P34
P1
J3
P13
J4
P34
LP 33 Series
2
J3
P1
P13
J4
P34
LP 33 Series
3
P34
J4
J3
P1
P13
LP 33 Series
4
P1
J3
P13
J4
P34
LPS
33U_03
0-040_RP
A co
nnecti
on_03
JP1
JP2
JP3