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Allen-Bradley 2711R-T7T PanelView 800 Graphic Terminal
The Allen-Bradley 2711R-T7T is a 7-inch PanelView 800 HMI featuring a high-resolution touchscreen, extensive protocol support, and robust integration for industrial control systems.
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SKU: 1756-CN2R
Allen-Bradley 1756-CN2R ControlNet Communication Module
The Allen-Bradley 1756-CN2R is a high-performance ControlNet bridge for ControlLogix systems. It supports 128 connections and redundant media for maximum uptime. This 5 Mbps module ensures deterministic data delivery for complex industrial automation networks.
The Allen-Bradley 1756-CN2R acts as a high-capacity bridge between ControlNet networks and ControlLogix backplanes. This module facilitates high-speed data transfer for mission-critical industrial applications. It belongs to the Rockwell Automation 1756 platform. This specific hardware supports redundant media configurations. Consequently, it prevents system failure during cable damage or signal loss. The unit ensures deterministic, repeatable data delivery for distributed I/O and peer-to-peer interlocking.
Technical Specifications
- Brand:Â Allen-Bradley / Rockwell Automation
- Model Number:Â 1756-CN2R
- Network Speed:Â 5 Mbps
- Logix Connections:Â Up to 128 connections
- Maximum Nodes:Â 99 nodes per network
- Communication Format:Â Scheduled and Unscheduled data
- Power Dissipation:Â 5.1 Watts
- Module Width:Â Single slot (standard ControlLogix)
- Backplane Current:Â 1100 mA at 5.1V DC; 3 mA at 24V DC
- Isolation Voltage:Â 30V (continuous)
Operational Features
This communication bridge provides significant throughput improvements over previous 1756-CNBR models. It manages complex automation tasks across expansive plant architectures. The redundant dual-channel architecture enhances network availability. Therefore, the system automatically switches channels if a fault occurs. This process happens without interrupting the control application. The hardware also supports CIP (Common Industrial Protocol) safety and motion control requirements. Engineers use this module to bridge messages across different network types within the Logix architecture.
Deployment and Compatibility
The 1756-CN2R installs directly into any slot of a standard ControlLogix chassis. It requires a network tap for physical connection to the ControlNet coaxial cable. The module supports a variety of network topologies including trunk-line and drop-line configurations. Its rugged design operates effectively in harsh industrial environments with 0 to 60°C temperature ranges. It carries multiple certifications including UL, CSA, CE, and C-Tick for global industrial compliance.
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Allen-Bradley 2094-BM02-S Servo Drive Axis Module
The Allen-Bradley 2094-BM02-S, also cataloged as the 2094-BM02-S Servo Drive, operates as a dedicated hardware component for multi-axis motion control execution within ControlLogix platforms. The hardware acts as a modular inverter node mounted directly onto a shared integrated power rail system. It modulates raw DC link energy into high-frequency pulse-width modulation (PWM) power vectors to regulate the angular positioning, velocity, and torque outputs of synchronized permanent magnet synchronous motors.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 2094-BM02-S |
| Brand | Allen-Bradley |
| Origin | USA |
| Weight | 0.9 kg |
| Dimensions | 3.5 x 13 x 14.5 cm |
| Operating Temp | 0 to +50 deg C (Standard Industrial Range) |
| Power Consumption | 650 VDC nominal input / 115 Ohm internal shunt resistor |
| Module Type | Servo Drive (Axis Module) |
| Product Range | ControlLogix / Kinetix 6000 |
| System Classification | PLC Motion Control |
| Continuous Current | 10.3 A (RMS), 14.6 A (Sine Peak) |
| Velocity Loop Bandwidth | 500 Hz |
| Current Loop Frequency | 1300 Hz |
| Efficiency Rating | 98% |
Industrial Control & Deterministic Driving Network
The Allen-Bradley 2094-BM02-S interacts directly over backplane bus communication velocity networks to achieve microsecond-level synchronization across adjacent drive modules. The hardware features deterministic network compatibility, letting control processors command motion trajectories with minimal jitter. It supports peak enhancement technology, scaling the nominal inverter output profile from a standard 150% threshold up to 250% during peak torque demands. This scaling permits rapid rotor acceleration and deceleration profiles without triggering overcurrent trips. Integrated Safe-Torque Off (STO) hardware circuits provide independent physical galvanic control paths, disabling gating signals to the output power transistors to prevent unexpected motor rotation during active maintenance states.Frequently Asked Questions
Q: What are the backplane current and configuration limits when expanding axis modules on a single rail?A: The module must be inserted into an authorized Kinetix 6000 power rail, supporting up to seven axis modules alongside one master power module. The cumulative peak current draw must not exceed the structural rating of the shared copper backplane link.Q: Is this hardware compatible with live hot-swapping procedures?A: No. The shared 650 VDC bus lines pose arc-flash and component damage hazards. System DC bus voltage must be entirely drained and verified below safe thresholds before seating or unseating the module from the rail structure.Q: Can the internal 115 Ohm shunt resistor handle high-inertia braking loads?A: The internal shunt resistor is designed for short-duration thermal dissipation. High-inertia or cyclic deceleration applications require an external, isolated shunt module to prevent DC bus overvoltage faults.Field Installation Guidelines
- Enclosure Clearance & Thermal Profile: Maintain a minimum enclosure installation depth of 10.7 inches. Ensure unimpeded vertical ventilation spacing above and below the module chassis to prevent heat sink thermal saturation.
- Cable Separation Architecture: Physically isolate unshielded high-voltage power cables, including motor leads and shunt resistor lines, from low-level digital feedback encoder loops and communication wires to suppress cross-talk.
- Shielding and Ground Boundary: Terminate all motor cable shields at the designated grounding clamp on the power rail base. Maintain a low-impedance ground plane across the entire mounting subpanel.
- Overcurrent Protection: Install specified circuit breakers or high-speed semiconductor fuses upstream of the main power distribution block to guard the internal solid-state components against phase-to-phase short circuits.
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