
Publication 1747-UM011G-EN-P - June 2008
268
Calculating Heat Dissipation for the SLC 500 Control System
Example Worksheet
Procedure for calculating the total heat dissipation for the controller
1. Write in the total watts dissipated by the processor, I/O, and speciality modules, and any peripheral devices attached to the processor.
Chassis Number 1
Chassis Number 2
Chassis Number 3
Slot
Cat. No.
Heat Dis
(Watts)
Slot
Cat. No.
Heat Dis
(Watts)
Slot
Cat. No.
Heat Dis
(Watts)
0
1747-L511
1.75
4
1746-IA16
4.8
1
1746-BAS
3.8
5
1746-IA16
4.8
2
1746-IA8
2.4
6
1746-OW16
5.5
3
1746-OV8
6.9
7
1746-OW16
5.7
Peripheral Dev
1747-DTAM
2.5
Peripheral Dev
Peripheral Dev
Peripheral Dev
Peripheral Dev
Peripheral Dev
2.Add the heat dissipation values
together for your total chassis
heat dissipation.
17.35
2.Add the heat dissipation values
together for your total chassis
heat dissipation.
20.8
2.Add the heat dissipation values
together for your total chassis
heat dissipation.
3.Calculate the power supply loading for each chassis (minimum watts) for each device.
(1)
Chassis Number 1
Chassis Number 2
Chassis Number 3
Slot
Cat. No.
Heat Dis
(Watts)
Slot
Cat. No.
Heat Dis
(Watts)
Slot
Cat. No.
Heat Dis
(Watts)
0
1747-L511
1.75
4
1746-IA16
0.425
1
1746-BAS
3.75
5
1746-IA16
0.425
2
1746-IA8
0.25
6
1746-OW16
5.17
3
1746-OV8
0.675
7
1746-OW16
5.17
User Power
User Power
2.4
User Power
Peripheral Dev
1747-DTAM
2.5
Peripheral Dev
Peripheral Dev
4.Add the heat dissipation values
together for your power supply
loading.
8.925
4.Add the heat dissipation values
together for your power supply
loading.
13.59
4.Add the heat dissipation values
together for your power supply
loading.
5.Use the power supply loading (step
4) for each chassis and the graphs
on page 266 to determine power
supply dissipation.
13.0
5.Use the power supply loading (step
4) for each chassis and the graphs
on page 266 to determine power
supply dissipation.
15.0
5.Use the power supply loading (step
4) for each chassis and the graphs
on page 266 to determine power
supply dissipation.
6.Add the chassis dissipation (step 2)
to the power supply dissipation
(step 5).
30.35
6.Add the chassis dissipation (step 2)
to the power supply dissipation
(step 5).
35.8
6.Add the chassis dissipation (step 2)
to the power supply dissipation
(step 5).
7.Add the values together from step 6 across to the right.
66.15
8.Covert the value from step 7 to BTUs/hr by multiplying the total heat dissipation of your controller by 3.414.
225.84
(1)
If you have a device connected to user power, multiply 24V dc by the amount of current used by that device. Include user power in the total power supply loading.
Содержание SLC 500
Страница 4: ...Publication 1747 UM011G EN P June 2008 4 Summary of Changes Notes ...
Страница 12: ...Publication 1747 UM011G EN P June 2008 12 Table of Contents Glossary Index ...
Страница 26: ...Publication 1747 UM011G EN P June 2008 26 Quick Start for Experienced Users Notes ...
Страница 54: ...Publication 1747 UM011G EN P June 2008 54 Selecting Your Hardware Components Notes ...
Страница 74: ...Publication 1747 UM011G EN P June 2008 74 System Installation Recommendations Notes ...
Страница 110: ...Publication 1747 UM011G EN P June 2008 110 Installing Your Hardware Components Notes ...
Страница 168: ...Publication 1747 UM011G EN P June 2008 168 Troubleshooting Notes ...
Страница 174: ...Publication 1747 UM011G EN P June 2008 174 Replacement Parts Notes ...
Страница 180: ...Publication 1747 UM011G EN P June 2008 180 Specifications ...
Страница 200: ...Publication 1747 UM011G EN P June 2008 200 Setting Up the DH 485 Network Notes ...
Страница 260: ...Publication 1747 UM011G EN P June 2008 260 Communicating with Devices on an Ethernet Network Notes ...
Страница 270: ...Publication 1747 UM011G EN P June 2008 270 Calculating Heat Dissipation for the SLC 500 Control System Notes ...
Страница 286: ...Publication 1747 UM011G EN P June 2008 286 Glossary Notes ...