Product Overview
For engineers seeking precise analog control in MicroLogix systems, the Allen-Bradley 1762-OF4 delivers reliable performance. This analog output module from the MicroLogix series provides four single-ended channels configurable for voltage or current signals. It is designed to drive modulating actuators, valves, variable frequency drives, dampers, and other control elements. The module's R-2R ladder voltage switching DAC ensures accurate conversion of digital commands to analog outputs.
Technical Specifications Breakdown
Key parameters for the 1762-OF4 are listed below for quick reference:
| Feature | Specification |
|---|---|
| Part Number | 1762-OF4 |
| Brand | Allen-Bradley |
| Product Type | Analog Output Module |
| Series | MicroLogix |
| Outputs | (4) Analog |
| No. of Outputs | Four (4) Single-ended |
| Input Power | 24 Volts DC |
| Analog Normal Operating Range | 0-10 Volts DC; 4-20 mA |
| Output Range | 0-10 Volts DC |
| Full Scale Analog Ranges | 0…10.5V DC; 0…21 mA |
| Converter Type | R-2R Ladder Voltage Switching |
| Resolution | 12 bits (unipolar) |
| Typical Overall Accuracy | ±1.17% full scale at -20 °C…65 °C (-4 °F…149 °F) ±0.5% full scale at 25 °C (77 °F) |
| Repeatability | ±0.12% |
| Dimensions | 90 x 87 x 40 mm (HxDxW) |
| Heat Dissipation | 2.8 Watts |
| Recommended Cable | Belden 8761 (shielded) |
Industry Applications
Common applications include:
- Valve Positioning: The 4-20mA current output drives modulating valves in chemical or water treatment plants, ensuring accurate flow control.
- Variable Frequency Drive Control: Voltage signals (0-10VDC) command VFDs in conveyor systems or pump stations, enabling energy-efficient speed regulation.
- Retransmission to SCADA: The module can send process values to indicators, data loggers, or supervisory systems, supporting plant-wide monitoring.
Installation & Setup Guidance
Mount the 1762-OF4 horizontally on a well-grounded metal panel or DIN rail. If the mounting surface is not grounded, connect the module's mounting tabs or DIN rail to earth ground. Use Belden 8761 shielded cable for analog signal wiring to minimize noise. Follow electrostatic discharge (ESD) prevention guidelines during handling and installation. Configure output channels via the MicroLogix programming software for voltage (0-10VDC) or current (4-20mA) as needed.
Maintenance & Reliability
The module's typical overall accuracy of ±0.5% at 25°C and ±1.17% over the full temperature range ensures consistent performance. With repeatability of ±0.12%, it delivers reliable control. Heat dissipation of only 2.8 Watts keeps thermal stress low. Periodically inspect connections and cable shielding for integrity. Ensure the operating environment stays within -20°C to 65°C for optimal accuracy.
Compatibility & Integration
The 1762-OF4 is compatible with MicroLogix 1100, 1200, and 1400 controllers. Up to four modules can be used with a MicroLogix 1100, six with a 1200, and seven with a 1400. It supports Raw/Proportional and Scaled-for-PID data formats, making it suitable for PID loop control. Integration with HMI or SCADA systems is straightforward via manual entry or automatic PID assignment.
Selection Guide & Purchasing Advice
When selecting an analog output module for your MicroLogix system, the 1762-OF4 offers a proven balance of accuracy and simplicity. AutoDCSTech stocks this module to support your automation needs. Please verify current lifecycle status and availability with AutoDCSTech before ordering.
Availability & Condition at AutoDCSTech
| Part Number | 1762-OF4 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | US |
