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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
1 2
1
2 3 4
5 6 7
12 13 14
8 9
21 22
15 16 17
18 19 20
10 11
XA
Customer Interface
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.
In a Parallel System a separate NC (Normally Closed) contact must be connected individually
to each unit.
XA
Fig. 4.11-2 XA "EPO - Emergency Power Off" – RPA Parallel System connection schematics
TLE Series 625 to 1000 PurePulse™ UL S2
2
).
Fig. 4.11-1 XA terminal block for EPO command connection
XA
XA
Note!
This procedure could imply a Load shut-down.
Keep SELV cables separated from high voltage cables.
UPS Installation Guide / REV-B
XA
EPO
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