Rockwell Automation Publication 1734-UM013C-EN-P - August 2010
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Power Supply Examples
Chapter
5
Example 1: POINT Guard I/O Used with 1734-EP24DC for Input,
1734-FPD for Output - 24V DC Only I/O
This power supply example uses a 1734-EP24DC expansion power supply and
1734-FPD field power distributor to power I/O with these properties:
•
Group 1 and Group 4 I/O have separate functioning groups of I/O,
compared to the rest of the I/O.
•
Field power for Group 3 is on a supply separate from bus communication
power (Supply 3 loss is visible to the controller).
•
Field power for Group 2 is on the same supply as bus communication
power for Group 2 and Group 3 (Supply 2 loss causes broken connections
to the controller for Group 2 and Group 3).
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-A
EN
T
5V
24V
St
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rd
I/O
Stan
da
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I/O
St
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I/O
Stan
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I/O
Stan
da
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I/O
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-EP
24
D
C
17
34
-EP
24
D
C
17
34
-FPD
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-O
B8S
17
34
-IB8S
17
34
-IB8S
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-O
B8S
24V Supply for
Standard I/O
Modules
24V Supply for
Additional I/O
Modules (option)
24V Supply for
Safety Outputs
24V Supply for
Safety Inputs
5V
5V
24V
24V
24V
St
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I/O
St
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rd
I/O
St
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rd
I/O
St
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da
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I/O
St
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I/O
St
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I/O
Group 1
Group 2
Group 3
Group 4
St
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rd
I/O
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-IB8S
Supply 1
Supply 2
Supply 3
Supply 4