Epo - Emergency Power Off" Command Connection - ABB TLE Scalable Series Installation Manual

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4.10 "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
J35µP -
RS232 XA
Q1
Fig. 4.10-1 XA terminal block for EPO command connection
XA
Fig. 4.10-2 XA "EPO - Emergency Power Off" – RPA Parallel System connection schematics
When the "EPO - Emergency Power Off" has been activated, the system must be restored as follows:
• Realize the push-button "EPO - Emergency Power Off" (contact on XA / EPO-1, EPO-2 is closed again).
• Perform the "Inverter OFF" command from the screen:
Commands 1 / Inverter / OFF. (see User Manual to Section 6.5).
In case of an RPA Parallel System perform the "Inverter OFF" command from the screen
"Commands 1 / Inverter / OFF" of each unit connected on the Parallel Bus and having its switch
"Q1 - UPS Output" closed.
2
).
XA
XA
EPO
TLE Scalable Series 40 to 150 UL S1
An Emergency button
contact) can be connected on terminals XA / EPO-1, EPO-2.
Max. rating XA terminals: AWG 14 / 2.5mm
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.
XA
UPS Installation Guide / REV-B
(Normally Closed
2
.
In an RPA Parallel System, a
separate NC (Normally Closed)
contact must be
individually to each unit.
voltage-free
connected