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OPM_SGS_ISG_10K_40K_0US_V010.doc
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Installation
Guide
SG Series
10, 20, 30 & 40 kVA
4.1.7 EPO (Emergency Power Off) Input contact
4
1
3
2
3
2
1
SGT5
000_
100
-1
50_Cus
to
m
er
in
te
rf
ac
e
E
P
O_
01
4
XB
J2
JP3
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 - Interface Customer
.
Remove the cable short-circuiting terminals
XB 2 - 3)
when using this external switch.
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
.
In a parallel system a separate NC (Normally Closed) contact must be
connected individually to each unit.
When opened, this contact causes the immediate opening of the
Contactors
K3
,
K4
,
K6
,
K7
and
K8
, as well as the shutdown of
Rectifier
,
Inverter
and
Static-Switch
.
Be aware: The reliability of the system depends on this contact!
After closure of the Emergency contact, a reset is necessary to enable the restart of
the UPS, by pressing the key
“O”
(inverter off)
on the control panel.
In case of a parallel system press the key “O” (inverter off) on the
control panel of each unit connected on parallel bus and having it’s
output switch Q1 closed.
