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Phone: +86 16626708626Description
Key Technical Specifications
| Parameter | Specification / Value |
| Manufacturer | Foxboro / Invensys / Schneider Electric |
| Part Number | P0926JM (RoHS compliant equivalent: RH926JM) |
| Module Capacity | 8 Vertical Slots for 200 Series Fieldbus Modules (FBMs/FCMs) |
| Input Power Rails | Redundant Primary & Secondary 24 VDC Power Inputs |
| Communication Buses | Dual Fieldbus (Bus A & Bus B) + Time Strobe Interface |
| Mounting Format | Vertical 32 mm or 35 mm DIN-Rail Mount |
| Address Configuration | Baseplate Identification DIP Switch |
| Operating Temperature | −20 °C to +70 °C (−4 °F to +158 °F) |
| Relative Humidity | 5% to 95% non-condensing |
| Isolation Rating | Galvanic isolation across bus and power distribution paths |
Product Introduction & Supply Chain Strategy
The Foxboro P0926JM is an 8-position modular baseplate designed for the Foxboro I/A Series 200 Series subsystem. It serves as the physical mounting structure and electrical backplane, supplying primary and secondary 24 VDC power rails alongside dual fieldbus communication routing to connected Fieldbus Modules (FBMs) and Field Control Processors (FCPs).
Maintaining this baseplate as New Surplus mitigates critical downtime risks in continuous process facilities. As Schneider Electric transitions older 200 Series hardware to end-of-life (EOL) status, OEM lead times for factory replacements can cause severe plant outages. Securing a New Surplus P0926JM eliminates lead time variability while protecting against the micro-fractures, contact surface oxidation, and trace degradation common in second-hand backplanes.
P0926JM
P0926JM
Installation & Configuration Guide
Stage 1: Pre-Installation (Prep & Safety)
- Perform full Lock-Out/Tag-Out (LOTO) on both primary and secondary 24 VDC feeder circuits supplying the control cabinet rack.
- Put on an anti-static wrist strap connected to a verified enclosure earth ground point to prevent ESD damage.
- Photograph and document the DIP switch settings (Node/Baseplate ID address) on the rear/side of the existing P0926JM baseplate.
Stage 2: Removal
- Unplug all fieldbus extension cables, power supply connectors, and time strobe cables attached to the baseplate ends.
- Carefully unseat and remove all 8 installed FBM/FCM modules, placing each in static-shielded packaging.
- Release the DIN-rail locking mechanisms at the top and bottom of the P0926JM housing and pull the baseplate away from the rail.
Stage 3: Installation (Clone & Seat)
- Inspect the new P0926JM baseplate for intact connector pins, undamaged DIN-rail latches, and clean bus interfaces.
- Set the module position DIP switch on the new to mirror the exact address configuration of the unit being replaced.
- Mount the firmly onto the vertical DIN rail until all locking clips snap securely into place.
- Reattach the primary and secondary 24 VDC power cables, dual fieldbus cables, and system ground straps.
Stage 4: Power-On & Testing
- Measure incoming primary and secondary power terminals with a multimeter to verify voltage stability within 21.6 VDC to 26.4 VDC.
- Re-insert the FBM modules into their original slot positions (1 through 8).
- Power up the 24 VDC rails and verify LED indicators across all mounted modules for green power status and active bus communication.
Firmware/Software Versions & Upgrade Notes
- Passive Backplane Functionality: The is a hardwired backplane routing unit and does not run internal flash firmware.
- Compatibility Requirements: Supports standard 200 Series FBMs, FCMs, and FCP270 modules operating under Foxboro I/A Series software releases V8.x or Foxboro Evo.
- RoHS Equivalent Notes: If replacing an older unit in a facility requiring compliance with environmental directives, the direct RoHS-compliant part number equivalent is RH926JM. Both parts maintain identical mechanical slot footprints and electrical bus specifications.
Frequently Asked Questions (FAQ)
Is this Foxboro baseplate new or refurbished?
This unit is strictly New Surplus / Original New. It has never been deployed in an operational plant, installed in an active cabinet, or pulled from a decommissioned system. It is preserved in original ESD-protective packaging.
Why choose New Surplus over a used or refurbished baseplate?
A single backplane failure on an 8-slot baseplate can disable up to eight I/O modules simultaneously, stopping entire process loops. Used or refurbished baseplates often suffer from bent connector pins, weakened DIN clips, and trace corrosion from harsh plant atmospheres. New Surplus offers 100% mechanical and electrical integrity at a fraction of OEM list price.
What is the difference between and RH926JM?
Functionally, dimensionally, and electrically, they are identical. The “RH” prefix indicates RoHS compliance (lead-free construction) introduced in later manufacturing runs. The is a direct drop-in replacement for the RH926JM in existing I/A Series racks.
Can I replace the baseplate while the system is running?
No. Replacing the baseplate requires disconnecting primary and secondary 24 VDC power rails and removing all connected FBM modules. This maintenance task must be performed during a scheduled plant outage or loop isolation under LOTO procedures.
How do you test and verify the before dispatch?
Every unit undergoes a physical inspection for connector pin alignment, structural housing check, continuity testing on power distribution rails, and anti-static packaging prep prior to shipping.
What warranty is provided with this component?
This New Surplus baseplate includes a 1-year full replacement warranty, matching standard OEM coverage terms for new industrial hardware.
