Critical Power
Modifications reserved
Page 44/46
GE_UPS_OPM_SGS_ISG_10K_40K_0US_V070.docx
Installation Guide
SG Series 10-20-30-40 UL S
4.1.7
“
EPO - Emergency Power Off” command connection
Be aware:
The reliability of the system depends on this contact NC (Normally Closed)!
Fig. 4.1.7-1 Terminals for connection EPO
An external Emergency switch (Normally Closed voltage-free
contact) can be connected on terminals
XB / 1 - 4
or connector
J2 / 12 - 25
of the
“P4 - Customer Interface”
.
NOTE !
To enable this function, remove cable short-
circuiting
XB / 2 -
3 on the
Terminal XB and the
Jumper JP3 on “P4 - Customer Interface”
, when
the cables have been already connected on
XB
or J2
.
When opened, this contact causes the immediate opening of the
Contactors
K3
,
K4
,
K6
,
K7
and
K8
, as well as the shut-down of
Rectifier
,
Inverter
and
Static-Switch
.
NOTE !
This procedure could imply a load shut-down.
NOTE !
In case of parallel
Customer Interface
the
EPO
contact must be connected to one
“P4
- Customer Interface”
only, but the bridge on
X2
and jumper
JP3
on the
“P4 -
Customer Interface”
must be removed on all other boards.
In a Parallel System a separate NC (Normally Closed) contact must be connected
individually to each unit.
Fig. 4.1.7-2 XB “EPO - Emergency Power Off” – RPA Parallel System connection schematics
4
1
3
2
3
2
1
S
G
T5000_
100
-150_Custom
er i
nte
rfa
ce
EP
O
_
0
1
4
XB
J2
JP3
EPO
2
4
3
1
XB
XB 2-3
2
4
3
1
XB
XB 2-3
2
4
3
1
XB
XB 2-3
SGSU_010-040_UP
S_EPO-RPA connec
tion schematic_GE
_01