Procure now the 2085-OB16, a robust 16-point sourcing digital output module for precise industrial actuation and control.
What Is the 2085-OB16?
The 2085-OB16 is a high-density digital expansion module specifically designed to provide 24V DC sourcing outputs for the Allen-Bradley Micro850 and Micro870 PLC series. This module acts as the «muscles» of the control system, switching power to field devices such as solenoid valves, auxiliary relays, and motor starters. With 16 individual output points, it offers a compact solution for managing complex automation sequences while ensuring high-speed switching and electrical isolation between the logic and the load.
Key Technical Specifications
- Outputs: 16 Sourcing (PNP)
- Operating Voltage: 24V DC (10-30V DC range)
- Current Rating: 0.5A per channel (max)
- Total Module Current: 8.0A (max)
- Surge Current: 2.0A for 10ms (non-repetitive)
- Off-State Leakage: 1.0mA (max)
System Performance and Protection
The 2085-OB16 is engineered for durability in harsh industrial environments. It includes built-in electronic protection against short circuits and over-current conditions, which prevents damage to the module if a field device fails. The module connects to the Micro800 expansion bus and provides clear LED status indicators for each of the 16 channels, allowing technicians to verify output states at a glance during commissioning or maintenance cycles.
Installation Advice
When wiring the 2085-OB16, ensure that the 24V DC power source is sized correctly to handle the combined inrush current of all connected solenoids or relays. We recommend installing external surge suppressors (diodes) across inductive DC loads to extend the life of the module’s internal solid-state switches and to reduce electrical noise within the control cabinet.
Frequently Asked Questions
Q: Is the 2085-OB16 a sinking or sourcing module?
A: This is a sourcing (PNP) module, meaning it provides the positive 24V DC signal to the load, which must then be connected to the common ground.
Q: What happens if a short circuit occurs on one output?
A: The module features electronic short-circuit protection that will shut down the affected channel to protect the internal circuitry until the fault is cleared.
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