Product Description
Product Details: Allen-Bradley CompactLogix ControlNet Interface Module (Model: 1768-CNB)
General Overview
- Manufacturer: Allen-Bradley
- Model/Part Number: 1768-CNB
- Description: The CompactLogix ControlNet Interface Module enables communication over the ControlNet network. It is designed for use with CompactLogix controllers, supporting up to 99 nodes and providing diagnostics for network management.
Specifications
| Attribute | Value |
|---|---|
| Device Type | Communication interface |
| Communication Interface Type | Bridge |
| Max Connections Supported | 48 |
| Dimensions (H x W x D) | 132 x 56.7 x 105.1 mm (5.20 x 2.23 x 4.12 in.) |
| Mounting Type | DIN Rail or Panel Mount |
| Mounting Location | 1768 ControlLogix Chassis (DIN rail mount) |
| Mounting Size | 35 x 7.5 mm or 35 x 15 mm (EN 50 022) |
| Mounting Screw Torque | 1.16 Nm (10 lb-in), using M4 or #8 panhead screws |
| Weight | 1768-CNB: 0.260 kg (0.57 lb) 1768-CNBR: 0.293 kg (0.64 lb) |
| Connectors | 1 BNC for non-redundant media operation, 1 NAP (RJ45 8-pin) 2 BNC for redundant media, 1 NAP (RJ45 8-pin) |
| Cable | Quad-shield RG-6 coaxial cable |
| Wiring Category | 2 (on communication ports) |
| Max Number of Nodes | 99 |
| Slot Width | 1, can be connected in slots 1–4 |
| Backplane Current at 5 V | 1 A |
| Power Consumption | 5.14 W |
| Power Dissipation | 5.14 W |
| Thermal Dissipation | 17.5 BTU/hr |
| Isolation (Continuous Voltage) | 30V (Tested at 710V dc for 60 s) |
| North American Temperature Code | T4A |
| ControlNet Communication Rate | 5 Mbps |
| Diagnostics | Yes |
Environmental Specifications
| Attribute | Value |
|---|---|
| Operating Temperature | 0…60 °C (32…140 °F) |
| Non-Operating Temperature | -40…85 °C (-40…185 °F) |
| Relative Humidity | 5…95% noncondensing |
| Vibration (Operating) | 5 g @ 10...500 Hz |
| Shock (Operating) | 30 g peak acceleration |
| Shock (Non-Operating) | 50 g peak acceleration |
| Emissions | CISPR 11: Group 1, Class A |
| ESD Immunity | IEC 61000-4-2: 6 kV contact, 8 kV air |
| Radiated RF Immunity | IEC 61000-4-3: 10V/m (from 80 to 2000 MHz) |
| EFT/B Immunity | IEC 61000-4-4: ±2 kV on communication ports |
| Surge Transient Immunity | IEC 61000-4-5: ±2 kV on communication ports |
| Conducted RF Immunity | IEC 61000-4-6: 10V rms from 150 kHz to 80 MHz |
| Enclosure Type Rating | None (open-style) |
Key Features
- High Network Capacity: Supports up to 99 nodes on the ControlNet network.
- Versatile Mounting: Can be mounted on a DIN rail or panel within a 1768 ControlLogix chassis.
- Redundant Media Operation: Includes dual BNC connectors for redundancy.
- Wide Environmental Tolerance: Operates in temperatures from 0°C to 60°C (32°F to 140°F), with shock and vibration resistance meeting international standards.
- Comprehensive Diagnostics: Provides detailed diagnostic information for efficient network troubleshooting.
- Power-Efficient: Consumes only 5.14 W with low thermal dissipation (17.5 BTU/hr).