Modifications reserved
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OPM_SGS_ISG_M75_M75_2US_V010.doc
Installation Guide
SG Series 750 UL S2
&
SG Series 750 T12 UL S2
4.1.6 EPO (Emergency Power Off) Input contact
BE AWARE !
The reliability of the system depends on this contact NC (Normally Closed)!
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
.
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
.
SGS_750_S2_
UPS_XA-XB_01
Q1
XB
XA
1
2
3
4
4
3
2
1
2
3
1
4
2
3
1
4
2
1415
34
16
1
7
56
19
20
89
18
7
22
11
1
21
10
12
12
13
Terminals XB
SG
S
_75
0_
T
e
rm
in
al
s XA
_0
1
2
4
3
1
Fig. 4.1.6-1 Terminals XB for connection EPO
When opened, this contact causes the
immediate opening of the
Bypass
Contactors
K6
and
K7
,
Rectifier input
contactor
K4
,
External Battery Breaker
(if
present) as well as the shutdown of the
Rectifier
and the
Inverter
and the
Static-
Switch
.
1
12
13
2
14
3
15
4
16
5
17
6
18
7
19
8
20
9
21
10
22
11
1
14
9
1
J2
S
G
S
_750_Cus
to
mer
in
te
rf
ace_J2
-JP
3_01
2
1
JP3
1
1
2
2
3
3
4
4
XB
41
32
41
32
3
2
1
3
2
1
2
11
2
Fig. 4.1.6-2 Customer interface
NOTE !
This procedure could imply a Load shutdown.
NOTE !
In case of parallel
Customer Interface
the
EPO
contact must be connected to one
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.
When the
EPO
has been activated, the system must be restored as follows:
•
Realize the push-button
EPO
(contact on
XB / 1, 4
is closed again).
•
Press the key
“
O
”
(Inverter Off
– see
Section 5.2 – Operating Manual)
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 the parallel bus and having its output switch Q1 closed.
