Overview
The ABB CL-LDR.16DC2 (order code 1SVR440851R0000) is a display I/O module from ABB’s CL Range family designed for industrial control and signal routing. Operating at 24V DC, this module combines input sensing, relay switching, and analog signal capability in a single compact unit, making it well-suited for legacy systems and new installations requiring discrete logic control.
Key Features
- 12 digital DC inputs for discrete signal detection
- 4 relay outputs rated 8A per contact for load switching
- 1 analog output for proportional control applications
- 4 of the 12 inputs configurable as analog inputs for flexibility
- 24V DC nominal supply voltage with integrated display capability
- Compact modular form factor for panel mounting
Technical Specifications
| Supply Voltage | 24V DC |
| Digital Inputs | 12 (DC) |
| Relay Outputs | 4 × SPDT (8A rated) |
| Analog Output | 1 (0–10V proportional) |
| Configurable Analog Inputs | 4 of 12 digital inputs |
| Module Type | Display I/O Base Module |
| Series | ABB CL Range (Logic Relays) |
| Manufacturer Part Number | 1SVR440851R0000 |
| Standards Compliance | EN 50178, UL 508, CSA C22.2 No. 142 |
| Operating Temperature | –10 to +60°C |
Typical Applications
- Discrete Logic Control: Replacement for hardwired relay logic in machine control and process automation
- Signal Routing & Switching: Consolidate input sensing and relay outputs in a single modular platform
- Machine Safeguarding: Use relay outputs for emergency shutdown and protective device coordination
- Industrial Automation: OEM and retrofit applications in manufacturing, packaging, and material handling
- HVAC/Utility Control: 24V DC compatible with facility automation and building management systems
Compatibility & Replacements
The CL-LDR.16DC2 is part of ABB’s established CL Range logic relay platform. For systems requiring transistor outputs instead of relays, the CL-LDT.16DC2 (1SVR440851R1000) offers identical input count with 4 transistor outputs. Related display base modules (CL-LDC, CL-LDD) are available as companion products for expanded functionality. Compatible with ABB’s legacy CL-NET network for distributed control applications. Always verify module compatibility with your existing control system before ordering.
