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Add power without rebuilding the POINT I/O architecture.
The 1734-EP24DC extends POINT I/O backplane power and creates a separate field-power distribution section for modules installed to the right. It accepts 24V DC input, converts the input to the POINTBus operating level, and adds additional bus capacity for downstream I/O.
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PRODUCT IDENTITY
EP24
24V DC expansion power
Role
Extend POINTBus capacity Power Partition
Separate field-power distribution Network Position
Installed within the POINT I/O assembly The key selection question is not simply module count — it is the downstream POINTBus current requirement.
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24V DC
INPUT |
→
POWER CONVERSION
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1734-EP24DC
Converts 24V DC input to POINTBus power and separates field-power distribution between the sections. |
→
+1.3 A POINTBUS
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DOWNSTREAM
I/O MODULES |
| Current Capacity The expansion supply adds up to 1.3 A of POINTBus current. Horizontal mounting allows 1.3 A at 19.2…28.8V DC; at lower input voltage, the horizontal output rating is reduced to 1 A. Vertical mounting is rated at 1 A across the 10…28.8V DC range. |
Field Power Partition The unit separates field-power distribution between the section on its left and the I/O section on its right. This can be useful for separating input/output groups, analog/digital groups, or functional sections. |
Bus Continuity The POINTBus data path remains intact across the power expansion point. The purpose is to add bus power and establish a new field-power segment without interrupting the POINTBus architecture. |
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1734-EP24DC
24V DC expansion power. Adds POINTBus current and establishes a new field-power segment.
Best when: additional POINTBus capacity is the problem.
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1734-EPAC
Expansion power using 120/240V AC rather than 24V DC.
Best when: the available expansion power source is AC.
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1734-FPD
Used to partition field power while passing POINTBus signals and existing 5V bus power.
Best when: field-power isolation is needed without adding POINTBus capacity.
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| 01 | When should I choose 1734-EP24DC instead of adding another communication adapter? The EP24DC is intended to solve a POINTBus power-capacity problem inside an existing POINT I/O architecture. If the communication architecture itself is the issue, an additional expansion power supply is not the appropriate solution. |
| 02 | Does “17 modules” mean every POINT I/O installation can place 17 modules after 1734-EP24DC? No. The stated capacity is 4…17 modules depending on the current requirement of the individual modules. The downstream current calculation determines the practical limit. |
| 03 | What happens if the cabinet supply is 12V DC rather than 24V DC for 1734-EP24DC? The module accepts 10…28.8V DC, but its POINTBus current capability varies with input voltage and mounting orientation. Therefore the exact voltage and orientation must be considered when calculating the available bus capacity. |
| 04 | Why use 1734-EP24DC between analog and digital POINT I/O groups? Its field-power partitioning can create a logical and functional separation between different I/O groups while maintaining the POINTBus data path. This can simplify power distribution planning. |
| 05 | Can 1734-EP24DC be used with every POINT I/O communication adapter? No. Rockwell identifies compatible adapter families including 1734-ADN, 1734-ADNX, 1734-ACNR, 1734-AENT and 1734-APB, while the expansion supply is not intended for 1734-PDN or 1734D communication adapters. |
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