1768-M04SE | Allen-Bradley SERCOS Interface Module Supplier

What Is the 1768-M04SE SERCOS Interface Module?

When your motion control system demands synchronized multi-axis performance, the 1768-M04SE from Allen-Bradley delivers a cost-effective solution. This CompactLogix SERCOS interface module integrates motion capability by allowing integration and control of up to four Kinetix drives. By using a fiber-optic network, it reduces wiring costs and simplifies installation compared to traditional analog interfaces.

The 1768-M04SE is compatible with 1768-L43 and 1768-L45 CompactLogix controllers, making it a versatile choice for upgrading existing systems or designing new ones. Its support for SERCOS Class B (position or velocity) control modes gives engineers flexibility to match application needs without overspending on unnecessary features.

Key Features & Technical Specs

• Power dissipation: 5.04 W, contributing to lower energy costs over the module's lifespan.
• Supports up to four drives, reducing per-axis hardware investment.
• Compatible with Kinetix 2000, 6000, 7000, and Ultra 3000 SERCOS servo drives, maximizing reuse of existing drives.
• Consumes three connections, preserving controller resources for other I/O.
• SERCOS data rate: 4 Mbps or 8 Mbps, enabling fast cycle times for high-throughput applications.
• Operating cycle: at 4 Mbps with up to 2 drives — 0.5 ms; at 4 Mbps with up to 4 drives — 1 ms; at 8 Mbps with up to 4 drives — 0.5 ms.
• Fiber optic connector: F-SMA standard screw-type, ensuring reliable, low-cost connections.
• Fiber optic core diameter: plastic cable 980 µm ± 60 µm; glass cable 200 µm ± 4 µm.
• Fiber optic operating temperature: plastic cable -55…85 °C; glass cable -20…85 °C, suitable for harsh environments.
• Fiber optic bend radius: plastic cable without jacket 25 mm; with standard jacket 25 mm; with nylon jacket 40 mm; glass cable 30 mm.
• Slot width: single slot, saving rack space and reducing enclosure costs.
• Bus current draw @ 5.2 VDC: 969 mA, minimizing power supply sizing.
• Module location: DIN rail or panel mount, offering installation flexibility.
• Shipping weight: 2 lbs; dimensions: 8x8x5 in.
• Series A and B.
• Enclosure: Open.
• Backplane current: 1.4 Amps at 24 Volts.
• Power consumption: 33.6 Watts.

A distinctive spec is the SERCOS operating cycle: at 8 Mbps with up to four drives, the cycle time is just 0.5 ms. This fast update rate directly translates to higher machine throughput and tighter synchronization, reducing scrap and rework costs in applications like packaging or printing.

Applications & Use Cases

In high-speed packaging lines, the 1768-M04SE enables precise coordination of multiple servo axes, cutting cycle times and improving product quality. For example, a bottling plant using Kinetix 6000 drives can integrate the module to synchronize fill, cap, and label stations, reducing downtime from misalignment. Additionally, in material handling systems, its support for up to four drives allows cost-effective control of conveyors and sorters without additional controllers.

Installation & Setup

Mount the 1768-M04SE on a DIN rail or panel in a single slot of the CompactLogix chassis. Use F-SMA fiber optic cables with the specified core diameters (plastic 980 µm or glass 200 µm) to connect to drives. Ensure the fiber optic bend radius meets the minimum values (plastic: 25 mm; glass: 30 mm) to prevent signal loss. For optimal performance, select the SERCOS data rate (4 Mbps or 8 Mbps) based on the number of drives and required cycle time.

Maintenance & Reliability

Regularly inspect fiber optic connections for dirt or damage to maintain signal integrity. The module's low power dissipation (5.04 W) reduces heat buildup, extending component life and lowering cooling costs. In environments with temperature extremes, the fiber optic cables' operating range (-55…85 °C for plastic, -20…85 °C for glass) ensures reliable operation, minimizing unplanned downtime and replacement expenses.

Compatibility & Integration

The 1768-M04SE integrates seamlessly with 1768-L43 and 1768-L45 CompactLogix controllers. It works with Allen-Bradley Kinetix 2000, 6000, 7000, and Ultra 3000 SERCOS servo drives, allowing you to mix and match drives based on power and cost requirements. The module consumes three connections, leaving ample controller resources for other network tasks. For systems using plastic fiber optic cables, choose from 2090-SCEPxx-0 (non-jacketed), 2090-SCVPxx-0 (standard jacket), or 2090-SCNPxx-0 (nylon jacket); for glass cables, use 2090-SCVGxx-0.

FAQs about the 1768-M04SE

Q: What is the maximum number of drives the 1768-M04SE can control?

A: The module supports up to four drives.

Q: What SERCOS data rates does the 1768-M04SE support?

A: It supports 4 Mbps and 8 Mbps data rates.

Q: What is the cycle time when using four drives at 8 Mbps?

A: The cycle time is 0.5 ms.

Q: Which CompactLogix controllers are compatible with the 1768-M04SE?

A: It is compatible with 1768-L43 and 1768-L45 controllers.

Q: What type of fiber optic connector does the module use?

A: It uses an F-SMA standard screw-type connector.

Q: Can the 1768-M04SE be mounted on a DIN rail?

A: Yes, it supports DIN rail or panel mounting.

Product Support & Availability

The 1768-M04SE is in stock and ready to ship from Petro Auto Tech. As a trusted industrial automation parts supplier, Petro Auto Tech offers competitive pricing and fast delivery to keep your projects on schedule. Contact our team for availability and ordering assistance.