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ALLEN BRADLEY 1747-L551 PLC Processor

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Calculating Heat Dissipation for the SLC 500 Control System<br />

F–3<br />

Hardware Component Catalog Numbers Watts per Point Minimum Watts Total Watts<br />

1746-OA8 1.000 0.925 9.00<br />

1746-OA16 0.462 1.850 9.30<br />

1746sc-OAP8I ➀ 1.125 0.850 9.85<br />

1746-OAP12 1.000 1.850 10.85<br />

1746-OB8 0.775 0.675 6.90<br />

1746-OB16 0.338 1.40 7.60<br />

1746-OB16E 0.150 0.675 3.07<br />

1746-OB32 0.078 2.26 4.80<br />

Discrete<br />

1746-OBP8 0.300 0.675 3.08<br />

Output<br />

1746-OBP16 0.310 1.250 6.26<br />

Modules oul<br />

1746-OG16 0.033 0.900 1.50<br />

Discrete Input & Output<br />

Modules<br />

1746-OV8 0.775 0.675 6.90<br />

1746-OV16 0.388 1.400 7.60<br />

1746-OV32 0.078 2.26 4.80<br />

1746-OVP16 0.310 1.250 6.26<br />

1746-OW4 0.133 1.310 1.90<br />

1746-OW8 0.138 2.590 3.70<br />

1746-OW16 0.033 5.170 5.70<br />

1746-OX8 0.825 2.590 8.60<br />

1746-IO4<br />

0.27 per input point<br />

0.133 per output point<br />

0.75 1.60<br />

1746-IO8<br />

0.27 per input point<br />

0.133 per output point<br />

1.38 3.00<br />

1746-IO12<br />

0.27 per input point<br />

0.133 per output point<br />

2.13 4.60<br />

1746-FIO4I not applicable 3.76 3.8<br />

1746-FIO4V not applicable 3.04 3.1<br />

1746sc-INI4I ➀ 0.237 2.30 3.25<br />

1746sc-INI4VI ➀ 0.100 2.85 3.25<br />

1746sc-INO4I ➀ 0.525 4.50 6.60<br />

Analog Modules<br />

1746sc-INO4VI ➀ 0.525 4.50 6.60<br />

1746-NI4 not applicable 2.17 2.2<br />

1746-NI8 not applicable 3.4 3.4<br />

1746-NIO4I not applicable 3.76 3.8<br />

1746-NIO4V not applicable 3.04 3.01<br />

1746-NO4I not applicable 4.96 5.0<br />

1746-NO4V not applicable 3.78 3.8<br />

➀ Sold and supported by Spectrum Controls, Inc., Bellevue, WA. For additional information, contact Spectrum at (206) 746-9481.<br />

Publication <strong>1747</strong>-6.2

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