BRX User Manual, 2nd Edition Appendix B Appxb
User Manual: Appendix B BRX Do-more Platform User Manual and Inserts
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BRX MPU Power Budgeting Appendix B In This Appendix... Power Budget Form.................................................................................................... B-2 Power Budget Worksheet........................................................................................... B-3 BRX MPU Available Expansion Power........................................................................ B-4 BRX MPU POM Power Consumed............................................................................. B-5 BRX MPU Expansion Module Power Consumed....................................................... B-6 Power Budget Examples............................................................................................. B-9 Appendix B: BRX MPU Power Budgeting 1 BRX MPU Power Budget The BRX MPU has a limited amount of power available to supply the expansion modules. When designing a BRX system the power budget should be taken into account to be sure that 2 your system will perform as expected. A general rule of thumb is that when there are 32 or more points of relay expansion modules 3 in a system, a power budget calculation must be performed to ensure that there is enough available power to accommodate all expected modules. 4 On the following pages you will find a worksheet and power budget tables to help you determine your system total power budget requirement. If the calculations exceeds the total available power, you may need to consider using an additional MPU or using a Remote I/O solution to 5 satisfy the system requirements. Examples are also included to help show how the calculations should be performed. 6 WARNING: It is extremely important to calculate the power budget. If you exceed the power budget, 7 the system may operate in an unpredictable manner which may result in a risk of personal injury or equipment damage. 8 Power Budget Form 9 1. Find the Watts available for the BRX MPU that you will be using. Put this value in line 1 MPU section of the worksheet. 10 2. If you are using a POM (Pluggable Option Module), find the watts consumed and put this value in line 2 - POM section of the worksheet. 11 3. For each Expansion Module that you will be using, find the watts consumed and put this value in the appropriate slot that the module will reside in, lines 3 through 10. 4. Add the values located in the POM Watts and Slot 1 through 8, lines 2 through 10. Write the 12 value of this sum in line 11 - Total Watts Consumed. 5. Subtract line 11 - Total Watts Consumed from line 1 - MPU Watts Available. Write this value 13 in line 12 - Watts Remaining. 6. If the value in line 12 - Watts Remaining is a negative number, your system is consuming more 14 Watts than the MPU is capable of providing. This system would be unsafe as designed. You will need to reconsider your design. If the remaining wattage is zero or more than zero, the system design is good. 15 A B C D B-2 BRX User Manual, 2nd Edition Appendix B: BRX MPU Power Budgeting Power Budget Worksheet Power Budget Worksheet Line Item Part # 1 MPU 2 POM 3 Slot 1 4 Slot 2 5 Slot 3 6 Slot 4 7 Slot 5 8 Slot 6 9 Slot 7 10 Slot 8 11 Total Watts Consumed (Add lines 2 thru 10) 12 Watts Remaining (Line 1 - line 11) Watts WARNING: It is extremely important to calculate the power budget. If you exceed the power budget, the system may operate in an unpredictable manner which may result in a risk of personal injury or equipment damage. BRX User Manual, 2nd Edition B-3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D Appendix B: BRX MPU Power Budgeting 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D BRX MPU Available Expansion Power The following tables show the available power for each of the BRX MPU’s. Use the wattages shown as the total available power when calculating the power budget. MPU Total Power Available # Built-in Inputs # Built-in Outputs BX-DM1E-M 0 0 21.3 BX-DM1E-M-D 0 0 21.3 BX-DM1-10ED1-D 6 4 8.5 BX-DM1-10ED2-D 6 4 8.5 BX-DM1-10ER-D 6 4 8.3 BX-DM1-10AR-D 6 4 8.3 BX-DM1E-10ED13-D 6 4 7.3 BX-DM1E-10ED23-D 6 4 7.3 BX-DM1E-10ER3-D 6 4 7.0 BX-DM1E-10AR3-D 6 4 7.0 BX-DM1-18ED1 10 8 20.2 BX-DM1-18ED2 10 8 20.2 BX-DM1-18ER 10 8 19.6 BX-DM1-18AR 10 8 19.6 BX-DM1-18ED1-D 10 8 20.2 BX-DM1-18ED2-D 10 8 20.2 BX-DM1-18ER-D 10 8 19.6 BX-DM1E-18ED13 10 8 18.8 BX-DM1E-18ED23 10 8 18.8 BX-DM1E-18ER3 10 8 17.9 BX-DM1E-18AR3 10 8 17.9 BX-DM1E-18ED13-D 10 8 18.8 BX-DM1E-18ED23-D 10 8 18.8 BX-DM1E-18ER3-D 10 8 17.9 Model Total Available Power (W) BX 10 BX 10E BX 18 BX 18E B-4 BRX User Manual, 2nd Edition Appendix B: BRX MPU Power Budgeting MPU Total Power Available, continued Total MPU Power Available # Built-in Inputs # Built-in Total Available Outputs Power (W) BX-DM1-36ED1 20 16 18.7 BX-DM1-36ED2 20 16 18.7 BX-DM1-36ER 20 16 17.6 BX-DM1-36AR 20 16 17.6 BX-DM1-36ED1-D 20 16 18.7 BX-DM1-36ED2-D 20 16 18.7 BX-DM1-36ER-D 20 16 17.6 BX-DM1E-36ED13 20 16 16.4 BX-DM1E-36ED23 20 16 16.4 BX-DM1E-36ER3 20 16 15.3 BX-DM1E-36AR3 20 16 15.3 BX-DM1E-36ED13-D 20 16 16.5 BX-DM1E-36ED23-D 20 16 16.5 BX-DM1E-36ER3-D 20 16 15.3 Model BX 36 BX 36E BRX MPU POM Power Consumed The following chart shows the power consumed by each of the BRX POMs. Use the wattages shown as the amount to be subtracted from the total available wattage when calculating the power budget. POM Power Consumption Model Consumption (W) BX-P-SER2-RJ12 0.2 BX-P-SER2-TERM 0.2 BX-P-SER4-TERM 0.2 BX-P-USB-B 0.1 BX-P-ECOMLT 0.4 BRX User Manual, 2nd Edition B-5 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D Appendix B: BRX MPU Power Budgeting 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D BRX MPU Expansion Module Power Consumed The following tables show the power consumed by each of the BRX Expansion Modules. Use the wattages shown as the total amount to be subtracted from the available wattage when calculating the power budget. BRX Discrete Input Expansion Modules BRX Input Expansion Modules Power Consumption Model Inputs/ Module Outputs/ Module Consumption (W) BX-08NA 8 0 0.2 BX-08NB 8 0 0.2 BX-08ND3 8 0 0.2 BX-08NF3 8 0 0.2 BX-12NA 12 0 0.3 BX-12NB 12 0 0.3 BX-12ND3 12 0 0.3 BX-16NA 16 0 0.3 BX-16NB 16 0 0.3 BX-16ND3 16 0 0.3 BRX Discrete Output Expansion Modules BRX Output Expansion Modules Power Consumption Model B-6 Inputs/ Module Outputs/ Module Consumption (W) BX-05TRS 0 5 1.8 BX-08TA 0 8 0.4 BX-08TD1 0 8 0.4 BX-08TD2 0 8 0.4 BX-08TR 0 8 1.7 BX-12TA 0 12 0.5 BX-12TD1 0 12 0.5 BX-12TD2 0 12 0.5 BX-12TR 0 12 2.5 BX-16TD1 0 16 0.5 BX-16TD2 0 16 0.5 BX-16TR 0 16 3.4 BRX User Manual, 2nd Edition Appendix B: BRX MPU Power Budgeting BRX Discrete Input/Output Combination Expansion Modules 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D BRX Combination Expansion Modules Power Consumption Model Inputs/ Module Outputs/ Module Consumption (W) BX-08CD3R 4 4 1.0 BX-12CD3D1 8 4 0.3 BX-12CD3D2 8 4 0.3 BX-16CD3D1 8 8 0.4 BX-16CD3D2 8 8 0.4 BRX User Manual, 2nd Edition B-7 Appendix B: BRX MPU Power Budgeting 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D BRX Analog Input/Output Expansion Modules BRX Analog Expansion Modules Power Consumption Type Model B-8 In BX-08AD-1 In BX-08AD-2B In BX-04THM Out BX-08DA-1 Out BX-08DA-2B Inputs/ Module Outputs/ Module 8 Consumption (W) 0 0.1 8 0 0.1 4 0 0.1 0 8 0.1 0 8 0.1 BRX User Manual, 2nd Edition Appendix B: BRX MPU Power Budgeting Power Budget Examples Example 1 Power Budget Worksheet Line Item Part # Watts 1 MPU BX-DM1-18ED1 20.20 2 POM 3 Slot 1 BX-08ND3 0.20 4 Slot 2 BX-16ND3 0.30 5 Slot 3 BX-16TR 3.40 6 Slot 4 BX-16TR 3.40 7 Slot 5 8 Slot 6 9 Slot 7 10 Slot 8 11 Total Watts Consumed (Add lines 2 thru 10) 7.30 12 Watts Remaining (Line 1 - line 11) 12.90 This example shows that the selected configuration is within the power budget. This is a sound configuration and will work as designed. WARNING: It is extremely important to calculate the power budget. If you exceed the power budget, the system may operate in an unpredictable manner which may result in a risk of personal injury or equipment damage. BRX User Manual, 2nd Edition B-9 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D Appendix B: BRX MPU Power Budgeting 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D Example 2 Power Budget Worksheet Line Item Part # Watts 1 MPU BX-DM1E-36ER3 15.30 2 POM BX-P-ECOMLT 0.40 3 Slot 1 BX-08NA 0.20 4 Slot 2 BX-16ND3 0.30 5 Slot 3 BX-16ND3 0.30 6 Slot 4 BX-16TD1 0.50 7 Slot 5 BX-16TD1 0.50 8 Slot 6 BX-16TR 3.40 9 Slot 7 BX-05TRS 1.80 10 Slot 8 BX-05TRS 1.80 11 Total Watts Consumed (Add lines 2 thru 10) 9.20 12 Watts Remaining (Line 1 - line 11) 6.10 This example shows that the selected configuration is within the power budget. This is a sound configuration and will work as designed. WARNING: It is extremely important to calculate the power budget. If you exceed the power budget, the system may operate in an unpredictable manner which may result in a risk of personal injury or equipment damage. B-10 BRX User Manual, 2nd Edition Appendix B: BRX MPU Power Budgeting Example 3 Power Budget Worksheet Line Item Part # Watts 1 MPU BX-DM1E-36ER3 15.30 2 POM BX-P-SER2-TERM 0.20 3 Slot 1 BX-16NA 0.30 4 Slot 2 BX-16NA 0.30 5 Slot 3 BX-16NA 0.30 6 Slot 4 BX-16TR 3.40 7 Slot 5 BX-16TR 3.40 8 Slot 6 BX-16TR 3.40 9 Slot 7 BX-16TR 3.40 10 Slot 8 BX-16TR 3.40 11 Total Watts Consumed (Add lines 2 thru 10) 18.10 12 Watts Remaining (Line 1 - line 11) -2.80 This example shows that the selected configuration will exceed the power budget. This is an unsafe configuration and will not work as designed. One way to correct this is to add Remote I/O to this system for additional I/O capability. WARNING: It is extremely important to calculate the power budget. If you exceed the power budget, the system may operate in an unpredictable manner which could result in a risk of personal injury or equipment damage. BRX User Manual, 2nd Edition B-11 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D Appendix B: BRX MPU Power Budgeting 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 A B C D NOTES: B-12 BRX User Manual, 2nd Edition
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