Product Details
The ABB CHBX01L 2VAA008574R1, also cataloged as the CHBX01L Compact Bus Extender, operates as a dedicated hardware component for horizontal bus extension and auxiliary power distribution within HN800 control system racks. Installed on the left side of an HN800 module row, the unit provides continuous pin connections to expand backplane bus signals and deliver 24 VDC module power across adjacent subrack assemblies.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | CHBX01L (2VAA008574R1) |
| Brand | ABB |
| Origin | Lithuania |
| Weight | 0.094 kg |
| Dimensions | 30 mm (W) x 127 mm (H) x 48 mm (D) |
| Operating Temp | -20 deg C to +70 deg C |
| Power Consumption | Passive bus extension (no direct power draw) |
| Auxiliary Power Interface | 24 VDC Module Power Distribution |
| Mounting Orientation | Horizontal row, left-side bus interface |
| System Compatibility | ABB System 800xA / HN800 I/O bus |
Deterministic Network Backplane and System Signal Integrity
The CHBX01L bus extender preserves backplane bus communication velocity across segmented HN800 module bays. By extending high-speed serial clock and data channels without introducing signal reflections, the assembly maintains real-time I/O scan timing across horizontal rack extensions.
Designed as a passive physical transition module, the hardware retains complete firmware flash compatibility across all connected controller and I/O interface units. Built-in power tracks route 24 VDC module power across the row, reducing potential voltage drops across high-density I/O configurations.
Frequently Asked Questions
Q: Does the CHBX01L bus extender require software driver installation or firmware flashing?
A: No, the CHBX01L functions as a passive physical backplane extension and does not contain programmable firmware or software logic.
Q: On which side of the HN800 module row must the CHBX01L be mounted?
A: The CHBX01L is mechanically and electrically configured specifically for installation on the left end of an HN800 horizontal module row.
Q: What precautions should be taken regarding the 24 VDC module power supply connected via the extender?
A: The 24 VDC supply lines must be de-energized prior to attaching or detaching the extender to prevent localized arcing across backplane terminal pins.
Field Installation Guidelines
- Isolate all 24 VDC power sources and field supplies connected to the HN800 row prior to physical installation.
- Wear a grounded wrist strap to prevent electrostatic discharge while handling the exposed bus connectors.
- Mount the CHBX01L extender on the far left side of the designated HN800 DIN-rail or baseplate assembly.
- Align backplane interconnect pins precisely with the adjacent terminal block before pressing the unit into locked position.
- Verify that retention clips or locking screws are fully engaged to withstand industrial cabinet mechanical vibration.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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