B&R X20PS9400 Power Supply | Replacement, Equivalent & Selection Guide
The B&R X20PS9400 is an internal power supply module designed for the B&R X20 PLC system. It provides stable 24 VDC power distribution to X20 I/O modules on the backplane bus, ensuring reliable operation in demanding industrial automation environments. This page serves as a comprehensive selection, replacement, and compatibility reference for engineers and procurement teams sourcing the X20PS9400 or its functional equivalents.
Technical Specifications
- Part Number: X20PS9400
- Manufacturer: B&R Industrial Automation (a member of the ABB Group)
- Series: X20 System
- Module Type: Internal Power Supply Module
- Supply Voltage Input: 24 VDC (nominal)
- Function: Supplies internal bus voltage to X20 I/O modules
- Mounting: DIN rail (35 mm), integrated into X20 backplane
- Housing: Compact X20 form factor
- Weight: Approx. 240 g
- Certifications: CE, UL (refer to B&R official datasheet for full certification list)
- Operating Temperature: 0 °C to +55 °C
- Protection Class: IP20
Compatible Replacement & Equivalent Models
When the X20PS9400 is unavailable or discontinued, the following models may serve as functional replacements depending on your system configuration. Always verify electrical and mechanical compatibility before substitution:
- B&R X20PS9402 — Enhanced version with additional diagnostics; direct form-fit-function candidate
- B&R X20PS3300 — Alternative internal supply for X20 systems with different current ratings
- B&R X20PS4951 — Field supply module; evaluate if field-side power is the primary requirement
- B&R X20PS9600 — Higher-capacity internal supply; suitable for larger X20 node configurations
- Third-party 24 VDC DIN-rail PSU — Only as an upstream supply; cannot replace the X20PS9400 backplane function directly
Note: Replacement suitability depends on firmware version, bus configuration, and node size. Consult your B&R system documentation or contact Konmask for application-specific guidance.
Why Choose the Original Model
- Guaranteed Compatibility: Engineered specifically for the X20 backplane — no adaptation required
- Seamless Integration: Plug-and-play with Automation Studio configuration; no additional parameterization
- Proven Reliability: Validated for 24/7 industrial operation with full B&R quality assurance
- Warranty & Support: Backed by B&R’s global service network and Konmask’s sourcing guarantee
- Long-term Availability: Konmask maintains stock of both current and legacy X20 power supply modules
Typical Applications
- Machine automation and motion control systems using B&R X20 PLCs
- Distributed I/O nodes requiring internal bus power replenishment
- Panel-building projects with modular X20 architecture
- Retrofit and upgrade projects replacing older B&R 2003/2005 system nodes
- Automotive, packaging, food & beverage, and semiconductor manufacturing lines
System Compatibility
- Compatible PLC Platform: B&R X20 System
- Compatible Software: B&R Automation Studio 3.x / 4.x
- Bus System: X2X Link (internal X20 backplane bus)
- Compatible CPUs: X20CP series (X20CP1301, X20CP1381, X20CP3484, X20CP3585, etc.)
- Not compatible with: B&R 2003 System, X67 remote I/O (different form factor)
Selection Guide
Use the following criteria to select the correct power supply module for your X20 node:
- Step 1 — Count your I/O modules: Each X20 node has a maximum number of modules per internal supply segment. Nodes exceeding the limit require an additional X20PS module.
- Step 2 — Check current consumption: Sum the internal current draw (ICC) of all modules in the segment. The X20PS9400 must not be overloaded.
- Step 3 — Verify field supply needs: If modules require 24 VDC field supply (sensors, actuators), add a dedicated field supply module (e.g., X20PS4951).
- Step 4 — Confirm firmware compatibility: Ensure your Automation Studio project version supports the X20PS9400 hardware revision.
- Step 5 — Contact Konmask: For complex multi-node configurations, our technical team can review your BOM and recommend the optimal supply layout.
Quality Assurance & Sourcing
- All X20PS9400 units sourced by Konmask are genuine B&R components from authorized distribution channels or verified surplus stock
- Each unit undergoes visual inspection and functional verification prior to shipment
- Traceability documentation (batch records, country of origin) available upon request
- Konmask specializes in hard-to-find and long lead-time industrial automation parts — including discontinued B&R modules
How to Order
- Online: Add to cart directly on this page — stock availability shown in real time
- Email RFQ: Send your BOM or part number list to support@konmask.com
- Phone / WhatsApp: +0086 19859288691 (Mon–Fri, 09:00–18:00 CST)
- Lead Time: In-stock orders ship within 1–3 business days; sourced orders typically 5–15 business days
- Minimum Order: 1 unit
- Payment: T/T, PayPal, credit card, and trade assurance accepted
Replacement & Compatibility FAQ
Q: Can I use X20PS9402 as a direct replacement for X20PS9400?
A: In most cases yes — the X20PS9402 is the successor model with enhanced diagnostics. Verify your Automation Studio hardware catalog supports the 9402 revision before swapping.
Q: My X20PS9400 shows a red LED — is it faulty?
A: A red LED typically indicates an undervoltage condition on the 24 VDC supply input or an overloaded bus segment. Check upstream PSU output and total ICC load before replacing the module.
Q: Do you supply refurbished X20PS9400 units?
A: Konmask clearly labels all refurbished or tested-used stock. New and refurbished options are listed separately with distinct pricing. Contact us if you need clarification on a specific listing.
Q: Is the X20PS9400 compatible with X20 SafeIO modules?
A: The X20PS9400 provides standard internal bus power. Safety I/O modules may have additional power supply requirements — consult the B&R X20 SafeIO system manual.
Q: Can Konmask help me identify the right power supply for my X20 node?
A: Yes. Send us your X20 node configuration (CPU model, I/O module list, and field supply requirements) and our engineers will recommend the correct supply module(s).
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