System Application Guide
SAG582127000
Spec. No. 582127000 (Model 721
NPBB
)
Issue AF, February 26, 2014
Page 95 of 125
This document is property of Emerson Network Power, Energy Systems, North America, Inc. and contains confidential and proprietary information owned by Emerson Network Power, Energy
Systems, North America, Inc. Any copying, use, or disclosure of it without the written permission of Emerson Network Power, Energy Systems, North America, Inc. is strictly prohibited.
Sw
itc
h
se
tti
ng
s
m
us
tb
e
in
th
is
po
si
tio
n
to
in
te
rfa
ce
w
ith
th
e
AC
U
+
C
on
tro
lle
r
* The ACU+ relay assigned to “Critical Summary” alarm (relay 1 by default)
will operate in the “Fail Safe Mode”. “Fail Safe Mode” means Relay 1 is
de-energized during an alarm condition, opening the contacts between the
C and NO terminals, and closing the contacts between the C and NC terminals.
The ACU+’s remaining seven (7) relays energize during an alarm condition, closing
the contacts between the C and NO terminals, and opening the contacts between
the C and NC terminals.
Not all I/O points are available for customer connection (some are used for factory
system connections).
J3-J9:
Wire Size Capacity: 16-26 AWG.
Recommended Torque: 2.2 in-lbs.
M
A4
C
5U
31
IB
2
DI1-
DI1+
DI2-
DI2+
DI3-
DI3+
J3
J4
J5
J6
J7
J8
J9
DI4-
DI4+
DI5-
DI5+
DI6-
DI6+
DI7-
DI7+
DI8-
DI8+
DO1_NC
DO2_NC
DO1_COM
DO2_COM
DO1_NO
DO2_NO
DO3_NC
DO4_NC
DO3_COM
DO4_COM
DO3_NO
DO4_NO
DO5_NC
DO6_NC
DO5_COM
DO6_COM
DO5_NO
DO6_NO
DO7_NC
DO8_NC
DO7_COM
DO8_COM
DO7_NO
DO8_NO
J1
1
1
J1
1
2
J1
1
3
J1
2
1
J1
2
2
J1
2
3
2
4
3
1
J2
6
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
6
5
4
3
2
1
ST
U
PT
U
O
Y
AL
E
R
ST
U
P
NI
LA
TI
GI
D
Schematic Diagram of IB2 Board
IB2 TEMP
PROBE 1
IB2 TEMP
PROBE 2
-
J1
2
*
R
E
LA
Y
S
W
1
7
J2
J1
1
5
3
1
R
el
ay
O
ut
pu
tT
er
m
in
al
Bl
oc
ks
D
ig
ita
lI
np
ut
Te
rm
in
al
Bl
oc
ks
J9
J8
J7
J6
J5
J4
J3
8
6
4
2
8
7
6
5
4
3
2
1
+
IB
2
Bo
ar
d
(T
op
Vi
ew
)
N
O
C
N
C
N
O
C
N
C
N
O
C
N
C
N
O
C
N
C
N
O
C
N
C
N
O
C
N
C
N
O
C
N
C
N
O
C
N
C
5
3
1
4
6
2
5
3
1
4
6
2
5
3
1
4
6
2
5
3
1
4
6
2
5
3
1
4
6
2
5
3
1
4
6
2
5
3
1
4
6
2
C
on
ne
ct
or
to
AC
U
+
IB
2
TE
M
P
PR
O
BR
E
1
IB
2
TE
M
P
PR
O
B
E
2
IB2 Board Assembly
IB2
(ACU+ Interface Board)
(located on inside side
panel of Main Bay)
