Field wiring connections, Grounding the module, Output wiring – Rockwell Automation 1769-OB32 Installation Instructions User Manual
Page 9
Compact 32-point Solid-state 24V dc Source Output Module 9
Publication 1769-IN031A-EN-P - April 2003
Field Wiring Connections
Grounding the Module
This product is intended to be mounted to a well-grounded mounting surface such
as a metal panel. Additional grounding connections from the module’s mounting
tabs or DIN rail (if used), are not required unless the mounting surface cannot be
grounded. Refer to Industrial Automation Wiring and Grounding Guidelines,
Allen-Bradley publication 1770-4.1, for additional information.
Output Wiring
Basic wiring
(1)
of output devices
(2)
to the 1769-OB32 is shown below.
ATTENTION
!
• Miswiring of the module to an AC power source or
applying reverse polarity will damage the module.
• Be careful when stripping wires. Wire fragments that fall
into a module could cause damage at power up. Once
wiring is complete, ensure the module is free of all metal
fragments.
(1)
Recommended Surge Suppression - Use a 1N4004 diode reverse-wired across the load for transistor outputs switching 24V
dc inductive loads. For additional details, refer to Industrial Automation Wiring and Grounding Guidelines, Allen-Bradley
publication 1770-4.1.
(2)
Sourcing Output - Source describes the current flow between the I/O module and the field device. Sourcing output circuits
supply (source) current to sinking field devices. Field devices connected to the negative side (DC Common) of the field
power supply are sinking field devices. Field devices connected to the positive side (+V) of the field supply are sourcing field
devices. Europe: DC sinking input and sourcing output module circuits are the commonly used options.
+DC
24Vdc
-DC
DC
COM 1
DC
COM 2
OUT 14
OUT 12
OUT 10
OUT 8
OUT 6
OUT 4
OUT 2
OUT 0
OUT 15
OUT 13
OUT 11
OUT 9
OUT 7
OUT 5
OUT 3
OUT 1
+VDC 1
CR
CR
CR
CR
CR
CR
CR
CR
CR
CR
+DC
24Vdc
-DC
OUT 30
OUT 28
OUT 26
OUT 24
OUT 22
OUT 20
OUT 18
OUT 16
OUT 31
OUT 29
OUT 27
OUT 25
OUT 23
OUT 21
OUT 19
OUT 17
+VDC 2
CR
CR
CR
CR
CR
CR
CR
CR
CR
CR
30527-M
1769-OB32