Rockwell Automation 1747-ACNR15 ControlNet Adapter Module User Manual - Manual (Page 127)

Publication 1747-UM003A-EN-P
Understanding Your SLC 500/1746 Control System B-35
Once you have determined which way you will calculate the heat dissipation of
your modules, Refer to Example - Worksheet for Calculating Heat Dissipation
on page B-40. This worksheet shows you how to calculate the heat dissipation
for the example 1747-ACN15/-ACNR15 system on Page B-39. Once you feel
comfortable with the layout of the worksheet, go to the worksheet on
Page B-41 and fill it out for your control system.
Calculating the Power Supply Loading
Use the tables below to calculate the power supply loading for each chassis that
you have (step 1 of the worksheet).
Table B.5 Input Module Heat Dissipation
Catalog Numbers Watts per Point Minimum Watts Total Watts
1747-IA4 0.27 0.175 1.30
1746-IA8 0.27 0.250 2.40
1746-IA16 0.27 0.425 4.80
1746-IB8 0.20 0.250 1.90
1746-IB16 0.20 0.425 3.60
1746-IC16 0.22 0.425 3.95
1746-IG16 0.02 0.700 1.00
1746-IH16 0.32 0.217 5.17
1746-IM4 0.35 0.175 1.60
1746-IM8 0.35 0.250 3.10
1746-IM16 0.35 0.425 6.00
1746-IN16 0.35 0.425 6.00
1746-ITB16 0.20 0.425 3.60
1746-ITV16 0.20 0.425 3.60
1746-IV8 0.20 0.250 1.90
1746-IV16 0.20 0.425 3.60
Table B.6 Output Module Heat Dissipation
Catalog Numbers Watts per Point Minimum Watts Total Watts
1746-OA8 1.000 0.925 9.00
1746-OA16 0.462 1.850 9.30
1746-OAP12 1.000 1.850 10.85
1746-OB6EI 0.440 0.230 2.90
1746-OB8 0.775 0.675 6.90