BRX User Manual, 3rd Edition Appendix C Appxc

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Appendix

Appendix

Appendix

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In This Appendix...

BRX MPU Power Budget ..............................................................................................................................C-2

Power Budget Form ..................................................................................................................................C-2

Power Budget Worksheet .........................................................................................................................C-3

BRX MPU Available Expansion Power .......................................................................................................C-3

BRX I/O Controller Available Expansion Power .......................................................................................C-4

BRX MPU POM Power Consumed ............................................................................................................C-5

BRX MPU Expansion Module Power Consumed ......................................................................................C-5

Power Budget Examples ............................................................................................................................ C-7

BRX MPU PoweR BUdgeting

Appendix C: BRX MPU Power Budgeting

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BRX MPU Power Budget

The BRX MPU will automatically calculate the power budget, online or offline, taking into account the added

expansion modules. However, since there is a limited amount of power available to supply the expansion

modules, the power budget should be taken into account when designing a BRX system, to be sure that the

system will perform as expected.

A general rule of thumb is that when there are 32 or more points of relay expansion modules in a system, a

power budget calculation must be performed to ensure that there is enough available power to accommodate

all expected modules.

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 satisfy the system requirements.

Examples are also included to help show how the calculations should be performed.

NOTE: The Power Budget calculation applies only to backplane power supplied by the MPU or Remote I/O controller.

Some expansion modules also require external power supplied directly to the module, which is not included in this

calculation.

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.

Power Budget Form

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.

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.

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 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 in line

12 - Watts Remaining.

6. If the value in line 12 - Watts Remaining is a negative number, your system is consuming more 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.

Appendix C: BRX MPU Power Budgeting

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Power Budget Worksheet

Power Budget Worksheet

Line Item Part # Watts

1 MPU

2 POM

3Slot 1

4Slot 2

5Slot 3

6Slot 4

7Slot 5

8Slot 6

9Slot 7

10 Slot 8

11 Total Watts Consumed (Add lines 2 thru 10)

12 Watts Remaining (Line 1 − line 11)

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 MPU Available Expansion Power

The following tables show the available power for each of the BRX MPUs. Use the wattages shown as the

total available power when calculating the power budget.

MPU Total Power Available

Model # Built-in Inputs # Built-in Outputs Total Available

Power (W)

BX-DM1E-M 0 0 21.3

BX-DM1E-M-D 0 0 21.3

BX 10

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 10E

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 18

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

Table continued on next page

Appendix C: BRX MPU Power Budgeting

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MPU Total Power Available (continued)

Model # Built-in Inputs # Built-in Outputs Total Available

Power (W)

BX 18E

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

BX 36

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 36E

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

BRX I/O Controller Available Expansion Power

The following table shows the available power for each of the BRX I/O controllers. Use the wattages shown

as the total available power when calculating the power budget.

I/O Controller Total Power Available

Model # Built-in Inputs # Built-in Outputs Total Available

Power (W)

BX-EBC100

BX-EBC100-M NA NA 21.3

BX-EBC100-M-D NA NA 21.3

BX-DMIO

BX-DMIO-M NA NA 21.3

BX-DMIO-M-D NA NA 21.3

BX-MBIO

BX-MBIO-M NA NA 21.3

BX-MBIO-M-D NA NA 21.3

Appendix C: BRX MPU Power Budgeting

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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 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 Discrete 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-08SIM 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

BX-32ND3 32 0 0.4

Appendix C: BRX MPU Power Budgeting

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BRX Discrete Output Expansion Modules

BRX Discrete Output Expansion Modules Power Consumption

Model 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

BX-32TD1 0 32 1.0

BX-32TD2 0 32 1.0

BRX Discrete Input/Output Combination Expansion Modules

BRX Discrete 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 Analog Input/Output and Temperature Expansion Modules

BRX Analog Expansion Modules Power Consumption

Type Model Inputs/Module Outputs/Module Consumption (W)

In BX-04AD-1 4 0 0.1

In BX-04ADM-1 4 0 0.1

In BX-08AD-1 8 0 0.1

In BX-04AD-2B 4 0 0.1

In BX-08AD-2B 8 0 0.1

In BX-04THM 4 0 0.1

In BX-08THM 8 0 0.1

In BX-06RTD 6 0 0.1

In BX-08NTC 8 0 0.1

Out BX-04DA-1 0 4 0.1

Out BX-08DA-1 0 8 0.1

Out BX-04DA-2B 0 4 0.1

Out BX-08DA-2B 0 8 0.1

Appendix C: BRX MPU Power Budgeting

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Power Budget Examples

Example 1

Power Budget Worksheet

Line Item Part # Watts

1 MPU BX-DM1-18ED1 20.20

2 POM

3Slot 1 BX-08ND3 0.20

4Slot 2 BX-16ND3 0.30

5Slot 3 BX-16TR 3.40

6Slot 4 BX-16TR 3.40

7Slot 5

8Slot 6

9Slot 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.

Example 2

Power Budget Worksheet

Line Item Part # Watts

1 MPU BX-DM1E-36ER3 15.30

2 POM BX-P-ECOMLT 0.40

3Slot 1 BX-08NA 0.20

4Slot 2 BX-16ND3 0.30

5Slot 3 BX-16ND3 0.30

6Slot 4 BX-16TD1 0.50

7Slot 5 BX-16TD1 0.50

8Slot 6 BX-16TR 3.40

9Slot 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.

Appendix C: BRX MPU Power Budgeting

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Example 3

Power Budget Worksheet

Line Item Part # Watts

1 MPU BX-DM1E-36ER3 15.30

2 POM BX-P-SER2-TERM 0.20

3Slot 1 BX-16NA 0.30

4Slot 2 BX-16NA 0.30

5Slot 3 BX-16NA 0.30

6Slot 4 BX-16TR 3.40

7Slot 5 BX-16TR 3.40

8Slot 6 BX-16TR 3.40

9Slot 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 may result in a risk of personal injury or equipment damage.