Receiving & Installation 3-11MN1853
Discrete I/O Connections

The 25 pin Discrete I/O connector (Figure 3-5) contains the Input 18, Output

18 and OPTO 44/88 connections. (See Figures 3-15, 3-16 and the Section

OPTO 44/88 description.

Figure 3-15 Opto Isolated Input Connections (Inputs 18)
Inputs 18
(Isolated)
Com
470 Ù
Opto
Isolator
+5VDC (Isolated)
Common
(Isolated)
Figure 3-16 Programmable Output Connections
Outputs 18
(Programmable)
Com
10kÙ
Opto
Isolator
Jumper
12V
Factory installed jumper for 12VDC pullup operation.
Maximum current sink capability is 100mA per output
and 350mA maximum from internal 12VDC supply.
Outputs 18
(Programmable) Com
10kÙ
Opto
Isolator
(Remove Jumper) 12V
PUp
PUp
External
+24VDC
Supply
+24V
Com
Standard 12V Output Connections Optional 24V Output Connections
Remove factory installed jumper from terminal PUp.
Connect an external 24VDC supply to terminals PUp
and Com. (Terminal PUp must be positive).
Limits Connections
Figure 3-17 Opto Isolated Input Connections (Inputs 18)
Isolated Inputs
(Home, ET+, ET)
Com
715 Ù
Opto
Isolator
+5VDC (Isolated)
Common
(Isolated)
Limits
Drive Color
12V
Com
ET±
Brown
Green
White/Red
Limit
+V
0V
Output