Allen-Bradley micrologix 1500, User Manual

Page: 128 / 149

Publication 1764-UM001A-US-P
F-6 System Loading and Heat Dissipation
Considerations for System Expansion using Power Supplies and
Cables
The following worksheet is provided to assist in system expansion validation using
1769-PA2 and -PB2 Power Supplies with 1769-CRR1, -CRR3, -CRL1, and
-CRL3 Bus Communication Expansion Cables. Expansion power supplies must be
used with the expansion cables. Only one power supply may be used on an I/O
bank. Using an expansion power supply on the same I/O bank as your MicroLogix
1500 controller or two expansion power supplies on the same bank may damage a
power supply and may result in unexpected operation. Use the worksheet below to
account for the amount of 5V dc and 24V dc current consumed by your expansion
I/O and user supplied equipment.
NOTE
For an electronic version of the worksheet, visit the MicroLogix
web site. On the Internet, go to http://www.ab.com/micrologix.
Enter MicroLogix 1500; go to Tools and Tips, Expansion I/O
System Qualifier.
Catalog
Number Number of
Modules Module Current Requirements Calculated Current =
(Number of Modules) x (Module Current Requirements)
at 5V dc (in mA) at 24V dc (in mA) at 5V dc (in mA) at 24V dc (in mA)
1769-IA16 115 0
1769-IA8I 90 0
1769-IM12 100 0
1769-IQ16 115 0
1769-IQ6XOW4 105 50
1769-OA8 145 0
1769-OB16 200 0
1769-OV16 200 0
1769-OW8 125 100
1769-OW8I 125 100
1769-IF4 120 150
1769-OF2 120 200
Total Modules
(1)
:
Subtotal:
(1) The total number of I/O modules cannot exceed 8, including those connected directly to the controller (Bank 0) , and those connected via the cable (Bank 1).