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Chapter 2 Installation Instruction 11
NetSure 731 A41 Subrack Power System User Manual
IB2 user interface board
The external input and output signals are all connected to the IB2 user interface board. For the ports on the IB2 user
interface board, see Figure 2-15.
J9
J8
J7
J6
J5
J4
J12
J11
J2
Digital inputs 1
~
8,
20V
~
60V
I C port
2
SW1
Address DIP
J3
Alarm output dry contact
.
Figure 1-1 IB2 extension board port definition
Note
1. J11 and J12 are temperature sensor ports. They are not used here.
2. J2 is I
2
C interface, and provides the power.
See Table 2-6 for the dry contact terminal definition.
Table 1-1 Dry contact terminal definition
Name of double-layer port
Pin No.
Pin name
Definition
J3
1
DI1-
Digital input 1-
2
DI1+
Digital input 1+
3
DI2-
Digital input 2-
4
DI2+
Digital input 2+
5
DI3-
Digital input 3-
6
DI3+
Digital input 3+
J4
1
DI4-
Digital input 4-
2
DI4+
Digital input 4+
3
DI5-
Digital input 5-
4
DI5+
Digital input 5+
5
DI6-
Digital input 6-
6
DI6+
Digital input 6+
J5
1
DI7-
Digital input 7-
2
DI7+
Digital input 7+
3
DI8-
Digital input 8-
4
DI8+
Digital input 8+
5
NA
/
6
NA
/
J6
1
DO1_NC
NC contact of relay 1
2
DO2_NC
NC contact of relay 2
3
DO1_COM
Common contact of relay 1