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TLE Series 625 to 1000 PurePulse™ UL S2
UPS Installation Guide / REV-B
4.11
“EPO - Emergency Power OFF” command connection
Warning!
The connection of an emergency button EPO (Emergency Power Off) must be performed only by an
ABB Service Technician when the UPS is completely powered down!
Note!
The reliability of the system depends on this contact NC (Normally Closed)!
An Emergency button (Normally Closed voltage-free contact) can be connected on terminals
XA / EPO-1, EPO-2
.
Max. rating XA terminals:
AWG 14
(2.5mm
2
).
Fig. 4.11-1 XA terminal block for EPO command connection
When opened, this contact causes the
immediate opening of the
Contactors
K6
and
K7
as well as the shut-down of
Rectifier
,
Inverter
and
Static-Switch
.
Note!
This procedure could imply a Load shut-down.
Keep SELV cables separated from high voltage cables.
In a Parallel System a separate NC (Normally Closed) contact must be connected individually
to each unit.
Fig. 4.11-2 XA “EPO - Emergency Power Off” – RPA Parallel System connection schematics
TLES_160-400_S2
_Customer interf
ace-XA_ABB_01
Customer Interface
XA
-
1 2
1
12 13 14 15 16
17 18 19 20
21 22
2 3 4 5 6
7 8 9
10 11
E
PO
E
PO
+
TLES_160-400_S2
_Terminals XA-EPO
_ABB_01
E
PO
E
PO
+
-
XA
EPO
TLES_UL_625-750
_S2_UPS_EPO-RP
A connection sch
ematic_ABB_01
- +
1
2
XA
+
-
E
PO
E
PO
- +
1
2
XA
+
-
E
PO
E
PO
- +
1
2
XA
+
-
E
PO
E
PO
