1734-FPD — POINT I/O Field Power Distributor Module

The 1734-FPD is a field power distributor for the POINT I/O system that deliberately breaks the field power bus at its mounting position, starting a fresh field power segment for every module to its right. Unlike a power supply or expansion module, the FPD adds no backplane logic current of its own — it passes the 5V backplane signal straight through while creating a clean separation point in the 24V/AC field power distribution.

Specifications

Parameter	Value
Part Number	1734-FPD
Platform	POINT I/O (1734)
Function	Field power segment break (no backplane power added)
Input Voltage (DC)	10–28.8V DC
Input Voltage (AC)	120–240V AC
Max Field Power Current	10 A
Isolation Voltage	50V continuous
Mounting	35 mm DIN rail

Breaking the Field Power Bus On Purpose

POINT I/O nodes run two separate power systems side by side: the backplane (logic power for the modules themselves) and field power (24V DC or AC distributed to switch sensors and actuators). The 1734-FPD touches only the field power side. Place one at the point in a node where the voltage type needs to change — say, from 24V DC digital modules to 120V AC digital modules further along the rail — and everything to its right draws from the new field supply connected at that point, while the backplane connection to the adapter continues uninterrupted.

A second common use is noise isolation rather than voltage change: digital outputs switching inductive loads generate transients on the field power bus that can corrupt sensitive analog measurements sharing the same supply. Placing an FPD ahead of the analog modules gives them their own clean field power segment, separated from the switching noise of the digital output modules elsewhere in the same node.

FAQ

Q: Does the 1734-FPD add any current capacity to the POINTBus backplane?

No. It only redistributes field power, with zero backplane current contribution. For additional POINTBus current capacity, an expansion power supply module such as the 1734-EP24DC is the correct component instead.

Q: Is the 1734-FPD needed if every module in the node runs on the same 24V DC supply?

No. If the entire node shares one voltage type with no noise-sensitive analog modules needing isolation, the adapter's built-in field power distribution is sufficient and the FPD provides no functional benefit.

Q: Can both AC and DC field power be present in the same node using this module?

Yes. That's precisely the scenario the FPD is designed for — separating a 24V DC section from a 120/240V AC section within the same physical node, each fed by its own appropriate supply.

Q: How many FPD modules can be used in one node?

More than one can be used if multiple voltage changes or isolation boundaries are needed within the same node — each FPD simply creates another break point at its position on the rail.

1734-FPD New Factory Sealed 1734FPD Ser B Input Module