What Is the 140XCA71709 Backplane Expander Cable?
How do you add I/O capacity to a Modicon Quantum system when your cabinets are already full? The 140XCA71709 from Schneider Electric answers that question. It is a backplane expander cable built for the Modicon Quantum automation platform, with a 3 m (9.84 ft) length that lets you place expansion hardware where space actually exists. This is a connection accessory, not a controller — a practical link between Quantum components.
Technical Specifications
| Specification | Value |
|---|---|
| Manufacturer | Schneider Electric |
| Product Type | Backplane expander cable |
| Product Line | Modicon Quantum |
| Part Number | 140XCA71709 |
| UPC | 785901173458 |
| Weight | 2.00 lbs (0.91 kg) |
| Cable Length | 9.84 feet (3 meters) |
| Operating Temperature Range | -20°C to 60°C |
| Storage Temperature Range | -40°C to 85°C |
| Altitude Range | Up to 2000 meters |
| IP Rating | IP20 |
| Input Voltage | 24V DC |
| Communication Interface | Modbus TCP/IP |
| Compatibility | 140XBE10000 backplane expander |
Key Specs That Matter on the Plant Floor
Three values drive most buying decisions here. First, the 3 m cable length gives you real layout freedom — enough to route between adjacent cabinets without forcing a redesign. Second, the -20°C to 60°C operating range covers most process areas, from cold storage to warm compressor rooms. Third, the 24V DC input voltage matches the control power already present in most Quantum installations, so no extra supply is needed.
The IP20 rating means the cable belongs inside an enclosure. Keep it away from washdown zones and direct dust exposure. The 2000 m altitude limit suits high-elevation sites, and the 0.91 kg weight keeps shipping simple.
Where the 140XCA71709 Fits
This cable targets one job: connecting a 140XBE10000 backplane expander to the main Quantum backplane. Typical scenarios include:
- Panel upgrades — add I/O racks without replacing the existing controller.
- Retrofit projects — extend an installed Quantum system where floor space is tight.
- Skid builds — separate control and I/O sections while keeping one logical system.
Because the cable supports Modbus TCP/IP communication, it integrates into networked architectures. If you are wiring into an existing fieldbus, confirm cable routing and any gateway needs with your supplier before installation.
Installation Notes
Mounting is straightforward. Route the cable inside the enclosure, respect the minimum bend radius, and keep it clear of high-voltage runs. Verify the 24V DC supply is stable before connecting. The cable is compatible only with the 140XBE10000 backplane expander — do not substitute other expander hardware.
Maintenance and Reliability
Inspect the cable periodically for connector seating, abrasion, and heat damage. Replace any cable showing cracked insulation or bent pins. Storage between -40°C and 85°C protects spare units in unheated warehouses. Keeping one spare on the shelf cuts unplanned downtime, which is exactly where fast dispatch pays off.
Selection Checklist
Before ordering, confirm your system uses the Modicon Quantum platform, that you have a 140XBE10000 backplane expander, and that 3 m is enough distance. If you need spares when you need them, Oil AutoTech offers hands-on technical selection help and quick worldwide delivery. Contact Oil AutoTech today for pricing and availability.
Please verify current lifecycle status and availability with Oil AutoTech before ordering.
