Using an external 24v dc power supply (optional), Setting the jumper j4 -4, Setting the jumper j4 – Rockwell Automation 1746-NO8V SLC 500 8-Point Analog Output Module/ User Manual User Manual
Page 12
Publication 1746-UM026A-EN-P - September 2003
2-4 Installation and Wiring
Using an External 24V dc
Power Supply (optional)
The module has an external 24 V dc power jumper, J4, giving you the
option of using an external power supply.
Setting The Jumper J4
The jumper, J4, is located in the bottom right corner of the module’s
circuit board next to the power supply as shown below:
•
With the jumper in the 1-2 Shorted position, the module draws
all of its power from the backplane of the SLC system.
•
With the jumper in the 2-3 Shorted position, the module draws
its 24V dc power from the external power supply; however, the
module still draws its 5V dc power from the backplane.
•
If the J4 jumper is missing, the module will report a 24V dc
power fail, regardless of whether external 24 V dc power is
present or not.
RACK
EXT
12
3
J4 jumper location
Rack
1
2
3
Ext.
Rack
1
2
3
Ext.
Module draws power
from SLC backplane
(factory setting)
Module draws 24V dc
power from external
supply