Selection and integration guide for Pepperl Fuchs HiSHPSM/32/TB-02/HF32 HART Multiplexer Backplane

Pepperl Fuchs HiSHPSM/32/TB-02/HF32 HART Multiplexer Backplane is a 32-channel HART termination board designed to give a HART multiplexer access to analog output loops while allowing the plant to retain standard DCS field termination panels and existing field wiring.

The complete designation matters. The HF32 suffix identifies HART output filtering across all 32 channels, so a shorter HPSM or HiSHPSM reference should not be treated as the same configuration without comparison.

Product focus

• 32 unbalanced HART signal channels for analog output applications.
• 24 V DC nominal supply with reverse-polarity protection.
• HART output filters fitted across all 32 channels.
• Two 37-pin Sub-D connectors and support for serial or parallel wiring options.
• Dedicated slot for the HiDMux2700 HART Multiplexer.

This architecture is particularly useful when a maintenance team needs online HART access but wants to keep the installed control-system termination and field cabling. The board forms the interface layer; the multiplexer and workstation complete the communication path.

Pepperl+Fuchs product reference image. This shared library image is used for manufacturer and product-category recognition; confirm the exact board label, connector arrangement and supplied revision of Pepperl Fuchs HiSHPSM/32/TB-02/HF32 HART Multiplexer Backplane from the quotation and nameplate.

Core product parameters

The following values come from the Pepperl+Fuchs product data for HiSHPSM/32/TB-02/HF32. Verify the offered board revision and the complete project wiring before final acceptance.

What HF32 changes in the application

Within the HPSM/32/TB-02 family, HF32 denotes HART filters on all 32 channels. That makes Pepperl Fuchs HiSHPSM/32/TB-02/HF32 HART Multiplexer Backplane the all-channel filtered version for analog output cards. It should not be confused with an unfiltered base board or an HF16 version that filters only part of the channel set.

The filters support HART communication in an analog output environment while maintaining the underlying current-loop function. Confirm the actual output-card behavior and the approved loop architecture before installation, because the backplane does not replace the DCS output card or field-device power design.

Separate board, multiplexer and workstation roles

• The termination board provides loop access, connection and HART filtering.
• The HiDMux2700 multiplexer coordinates HART communication with field devices.
• The maintenance workstation uses the RS-485 network and suitable software for configuration, diagnostics and device data access.
• The DCS continues to perform the process-control function through the installed analog loops.

Defining these boundaries in the quotation prevents a backplane-only delivery from being mistaken for a complete HART asset-management solution.

Plan all 32 channels before wiring

Prepare a channel schedule for Pepperl Fuchs HiSHPSM/32/TB-02/HF32 HART Multiplexer Backplane before the board is installed. Map each DCS output, field instrument tag, cable pair and Sub-D pin assignment. Identify active, spare and intentionally unused channels so commissioning can distinguish a planned open position from a wiring fault.

• Record the DCS card and channel associated with every loop.
• Confirm polarity and terminal references against the approved wiring drawing.
• Identify whether the project uses the serial or parallel wiring arrangement.
• Label both 37-pin Sub-D connectors and their mating cables.
• Keep a controlled channel map with the cabinet documentation.

A 32-channel board concentrates many signals in a small interface. A disciplined channel map is therefore more useful than relying on cable position or memory during a shutdown replacement.

Power and RS-485 integration

Provide a controlled 24 V DC supply

The published nominal supply for Pepperl Fuchs HiSHPSM/32/TB-02/HF32 HART Multiplexer Backplane is 24 V DC. The data sheet lists a 100 mA, 5 x 20 mm fuse and approximately 0.7 W power dissipation with the multiplexer. Include the board in the cabinet power budget and verify supply polarity, protective devices and grounding against the project drawing.

Reverse-polarity protection is listed, but it is not a substitute for correct wiring or an approved commissioning procedure. Confirm the delivered fuse, spare-fuse policy and maintenance access before energization.

Treat both RS-485 ports as part of the network design

The board provides two RS-485 interfaces. Document which port is used, the addressing plan, cable type, shielding, termination and route to the maintenance workstation or multidrop network. Review redundancy or parallel communication expectations with the complete system design rather than inferring them from the presence of two connectors.

Retrofit value and project boundaries

A main reason to select Pepperl Fuchs HiSHPSM/32/TB-02/HF32 HART Multiplexer Backplane is the ability to add online HART access while retaining standard DCS field termination panels and existing field wiring. This can reduce rewiring during a control-system improvement, but the project still needs an evidence-based compatibility review.

• Confirm the installed analog output card and its electrical behavior.
• Compare the existing termination arrangement with the proposed Sub-D cabling.
• Check cabinet space, mounting method and service clearance.
• Identify the required multiplexer, communication accessories and software separately.
• Define which existing components will remain in service after the retrofit.

The backplane should be reviewed as one component in the HART interface solution. It does not by itself prove compatibility with every DCS output card, field device or asset-management package.

Replacement and receiving checks

When Pepperl Fuchs HiSHPSM/32/TB-02/HF32 HART Multiplexer Backplane is purchased as a replacement, photograph the installed board label and both connector areas before disconnection. Export or record the multiplexer configuration, channel map and RS-485 settings. Note any fitted jumpers, cable identifiers and cabinet-specific adaptations.

Verify the delivered scope

• Complete model HiSHPSM/32/TB-02/HF32 on the product or package label.
• Board condition, connector integrity and visible revision information.
• Whether the HiDMux2700 multiplexer is included or ordered separately.
• Sub-D cables, connectors, mounting hardware and other accessories included in the offer.
• Applicable product documentation and project inspection records.

Store the accepted channel schedule and photographs with the equipment record. This gives future maintenance teams a reliable baseline and helps repeat purchasing distinguish HiSHPSM/32/TB-02/HF32 from other HPSM variants.

Commissioning sequence

Before connecting all field loops, inspect the supply and connector orientation, then verify the communication path using the approved site procedure. Bring channels into service in controlled groups and compare HART access with the channel schedule.

• Check 24 V DC polarity and the board fuse before energization.
• Confirm RS-485 settings and communication with the multiplexer.
• Verify each loop remains functional for its process-control purpose.
• Confirm HART communication on representative channels and then the full scheduled set.
• Record exceptions, spare channels and final accepted configuration.

A successful connection to one instrument does not establish that all 32 channel assignments are correct. Complete the channel-by-channel record before releasing Pepperl Fuchs HiSHPSM/32/TB-02/HF32 HART Multiplexer Backplane for normal operation.

Buyer questions

Is the HiDMux2700 included with the backplane?

The board has a slot for the multiplexer, but the quotation should state explicitly whether a HiDMux2700 is included. Treat the backplane, multiplexer, cables and software as separately confirmed scope items.

Can the HF32 version replace the base or HF16 board?

Only after a technical comparison. HF32 applies HART output filters to all 32 channels, while other versions have different filtering or fusing arrangements. Match the complete order code and the approved loop design.

What should be sent with an inquiry?

Send Pepperl Fuchs HiSHPSM/32/TB-02/HF32 HART Multiplexer Backplane in full, quantity, destination and required delivery date. For replacement work, include the installed label, connector photographs, DCS output-card reference and a list of required accessories.

Request a quotation from HKXY Tech

Use Pepperl Fuchs HiSHPSM/32/TB-02/HF32 HART Multiplexer Backplane as the controlled inquiry reference. Ask the supplier to identify the exact board revision, condition, supplied accessories, documentation and delivery terms. Any substitute should be presented separately with a clear technical comparison.

Keeping the complete model visible throughout sourcing, receiving and commissioning helps prevent an unfiltered, partly filtered or differently fused HPSM variant from being accepted in place of HiSHPSM/32/TB-02/HF32.

Manufacturer reference: Pepperl+Fuchs HiSHPSM/32/TB-02/HF32 product data sheet. Final acceptance should follow the supplied product revision and approved project documentation.