Rockwell Automation 1794-OB16D FLEX I/O Diagnostic Modules User Manual - Manual (Page 123)

Publication 1794-UM061A-EN-P - July 2006
Simplified Schematics of FLEX I/O Digital Modules 121
1794-OB16D 24V DC 16 Diagnostic Output Module
1794-OB16P 24V DC 16 Output Module
Shorted
Output
Monitor
Open Wire
Monitor
Current Limiting
Thermal Prot.
Output FET
Output Indicator
Fault Indicator
+V
Open Wire
Detect
Current
Reverse
Voltage
Monitor
Output
Device *
24V Power
Flexbus Interface
B-17
B-16
A-0
C-34
Output
User Power
+
_
*
Use a 10 K Ω dummy resistor on unused output channels.
Typical Simplified Schematic for Input 0
and a 1794-TB2, 1794-TB3, 1794-TB3S or 1794-TB3S Terminal Base
41
ASIC
V
CC
+24V
Output
Device
COM
Current Limit Circuit
Thermal Protection
Output FET
+
-
C-34
A-0
B-17
B-16
Typical Simplified Schematic for Output 0
and a 1794-TB2, 1794-TB3, or 1794-TB3S Terminal Base
24V