Description

Schneider Electric BMXFTB2820 Modicon X80 Terminal Block

Configured for discrete wiring termination in Modicon X80 distributed I/O architectures, the Schneider Electric BMXFTB2820 (base model BMXFTB) provides direct physical execution of signal interconnection for modules utilizing a 28-pin removable interface.

Suffix Breakdown & Model Matrix

Code Segment	Definition
BMX	Modicon X80 Series Product Family
FTB	Removable Spring Terminal Block Accessory
28	28 Connection Terminals
20	Specific variant for 0.34..1 mm2 conductor range

Hardware Specifications

Parameter	Specification
Brand	Schneider Electric
Origin	France
Weight	0.07 kg (83 g incl. packaging)
Dimensions (LxWxH)	110.00 mm x 46.00 mm x 36.00 mm
Operating Temp	0 to 60 degC (Standard IEC 61131-2)
Wire Gauge	1 x 0.34..1 mm2 (22..17 AWG)
Connection Type	Spring clamp, tool-free release
Mounting	Direct plug-in to compatible module front

Backplane Bus Communication Velocity Licensing

The BMXFTB2820 supports the physical layer requirements for high-speed backplane data exchange within the Modicon X80 rack. It facilitates deterministic signal transfer rates up to 100 Mbps on the X-bus architecture. Compatibility is strictly governed by firmware flash versions; using non-compliant terminal blocks may result in bus arbitration errors or reduced I/O scan cycles. Ensure the accessory matches the specific module's hardware catalog revision to maintain protocol timing integrity.

Frequently Asked Questions

Q: Is hot-swapping permitted with this terminal block?

A: No. Power must be removed from the module before removing or inserting the BMXFTB2820 to prevent arcing and damage to the spring contacts.

Q: What is the maximum current load per terminal?

A: The terminal block is rated for signal-level applications. Do not exceed 2 A per terminal point; refer to the specific module datasheet for aggregate current limits.

Q: Does this include the module?

A: No. This is a removable accessory (FTB). The electronic module (e.g., BMXAMI0810) must be ordered separately.

Field Installation Guidelines

1. Conductor Preparation: Strip wires to 9 mm length. Use ferrules for stranded wires to ensure proper contact with the spring clamp mechanism.
2. Torque & Engagement: While spring terminals are tool-less, ensure the wire is fully seated until a distinct mechanical click is felt. Tug-test each wire after insertion.
3. Grounding: Connect shield drains directly to the DIN rail or designated ground bar; do not connect shields to the terminal block signal pins unless specified by the system grounding diagram.
4. Segregation: Maintain separation between power and signal wiring within the cabinet to minimize electromagnetic interference (EMI).

Specifications

• Brand: Schneider Electric

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems