

The ALLEN-BRADLEY 1786-RPCD is a critical component for expanding ControlNet networks over long distances, utilizing single-mode fiber optic media to achieve up to 20 km repeater spacing. This module is engineered to maintain signal integrity in electrically noisy environments, making it ideal for distributed control systems in heavy industries. By converting electrical ControlNet signals to optical signals, the 1786-RPCD ensures robust communication between remote I/O, drives, and controllers, with built-in diagnostic LEDs for quick troubleshooting. Its compact form factor and DIN-rail mounting simplify integration into existing panels, while redundant power inputs enhance reliability for mission-critical processes.
| Parameter | Specification |
|---|---|
| Product Type | ControlNet Fiber Optic Repeater Module |
| Model Number | 1786-RPCD |
| Fiber Optic Media | Single-Mode (9/125 µm) |
| Maximum Distance | 20 km (12.4 miles) per segment |
| Connector Type | ST (Bayonet) or SC (Push-Pull) depending on variant |
| Data Rate | 5 Mbps (ControlNet standard) |
| Power Supply | 24V DC (10-30V DC range), 120 mA typical |
| Power Consumption | 2.9 W typical |
| Isolation | 1500V DC between segments |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Storage Temperature | -40°C to 85°C (-40°F to 185°F) |
| Humidity | 5% to 95% non-condensing |
| Enclosure Rating | IP20 (NEMA 1) |
| Mounting | DIN Rail (35 mm) or Panel Mount |
| Dimensions (H x W x D) | 140 mm x 45 mm x 115 mm (5.5 in x 1.8 in x 4.5 in) |
| Weight | 0.3 kg (0.66 lb) |
| LED Indicators | Power, Status, Link, Fault |
| Standards Compliance | CE, UL, CSA, FCC Class A |
| Redundancy Support | Yes (dual media redundancy with 1786-RPA models) |

What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22