2085-OF4
2085-OF4
Manufacturer: ALLEN BRADLEY
Condition: New and Unused, Surplus.
Overview of Allen Bradley 2085-OF4
The Allen Bradley 2085-OF4 is a four-channel analog output module designed for use with Micro800 series programmable logic controllers (PLCs). Part of Rockwell Automation’s Micro850 and Micro870 expansion lineup, this module delivers precise voltage and current control, supporting both unipolar and bipolar signals. It is factory calibrated, does not require customer calibration, and is suitable for automation tasks where reliable, isolated analog outputs are essential. The 2085-OF4 is robust enough for industrial environments, offering channel diagnostics for conditions like over/under range and open circuit. Typical installations include process control, motion control, and analog signal interfacing between PLCs and field devices.
Key Features of Allen Bradley 2085-OF4
- Four independent analog output channels for voltage and current signals
- Supports multiple output ranges: ±10V DC, 0–10V DC, 0–20 mA, and 4–20 mA (configurable per channel)
- 12-bit resolution for unipolar signals; 11 bits plus sign for bipolar, ensuring precise signal generation
- Fast conversion rate (2 ms per channel), ideal for dynamic control applications
- Channel diagnostics with bit reporting for over/under range and open circuit conditions
- Factory calibrated—no customer calibration required
- Compact, DIN rail or panel mount design; compatible with Micro830, Micro850, and Micro870 controllers
- IP20 enclosure for basic industrial protection
- Operating temperature range: -20°C to 65°C, suitable for most industrial environments
- Data is formatted as left-justified, 16-bit 2's complement for easy integration with PLC logic
Technical Specs of Allen Bradley 2085-OF4
| Attribute | Specification |
|---|---|
| Output Channels | 4 |
| Output Type | Current / Voltage (Single-Ended, Isolated) |
| Output Ranges | ±10V DC, 0–10V DC, 0–20 mA, 4–20 mA |
| Resolution | 12 bit (unipolar), 11 bit + sign (bipolar) |
| Conversion Rate | 2 ms per channel |
| Max Load on Voltage Output | 3 mA |
| Operating Temperature | -20°C to 65°C |
| Enclosure | IP20 |
| Dimensions | 90 mm W x 87 mm D x 28 mm H |
Applications / Use Case
The Allen Bradley 2085-OF4 is ideal for any application requiring stable, isolated analog outputs from a Micro800 series PLC. Commonly used in manufacturing, water treatment, material handling, and energy management, this module interfaces with sensors, actuators, and variable speed drives. It is also a fit for analog control loops in process industries, remote monitoring systems, and automated test equipment. The combination of fast update times, configurable output ranges, and channel diagnostics makes it a reliable choice for demanding control tasks where accuracy and uptime are critical.
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