Keterangan
Description
The Allen-Bradley 1771-DB is a Basic Module designed for use within the PLC-5 programmable controller system. This module provides communication capabilities, supporting DH485, PRT1, and PRT2 protocols to facilitate data exchange between the PLC-5 and peripheral devices. Please note that this module was officially discontinued by the manufacturer on December 30, 2015.
Features
- Designed for integration with the Allen-Bradley 1771 I/O chassis.
- Supports multiple communication ports including DH485, PRT1, and PRT2.
- Requires 0.75 Amps at 5VDC from the backplane for operation.
- Compact form factor for standard 1771 chassis mounting.
Applications
This module is typically utilized in legacy PLC-5 automation environments requiring serial communication or DH485 network connectivity for HMI, programming terminals, or third-party device integration.
Technical Specifications
| Manufacturer |
Allen-Bradley |
| Model Number |
1771-DB |
| Module Type |
Basic Module |
| Communication Ports |
DH485, PRT1, PRT2 |
| Backplane Current Draw |
0.75 Amps at 5VDC |
| Status |
Discontinued |
Installation Guidelines
- Ensure the PLC-5 chassis is powered down before inserting or removing the 1771-DB module to prevent electrical damage or backplane faults.
- Align the module carefully with the chassis slot guides and seat it firmly to ensure proper backplane connector engagement.
- Use appropriate shielded cabling for communication ports to minimize electromagnetic interference (EMI) in industrial environments.
- Maintain proper ventilation in the control cabinet to prevent heat buildup around the I/O rack.
- Follow standard ESD (Electrostatic Discharge) precautions when handling the module to protect internal circuitry.
FAQ
Is the 1771-DB still available from the manufacturer?
No, the 1771-DB was discontinued by Allen-Bradley on December 30, 2015. It is now primarily available through secondary market channels.
What are the power requirements for this module?
The 1771-DB requires 0.75 Amps at 5VDC from the PLC-5 backplane.
