وصف
Description
The Allen-Bradley 1769-OF8C is a high-performance analog current output module designed for the Compact I/O platform, compatible with CompactLogix and MicroLogix 1500 controller systems. This module bridges the gap between digital control logic and physical field devices by converting 16-bit digital values into precise DC current signals. With 8 independent output channels, it provides reliable control for industrial actuators, proportional valves, and variable frequency drives (VFDs).
Features
- 8-channel analog current output
- Supports standard 0-20 mA and 4-20 mA signal ranges
- High-precision 16-bit DAC resolution
- Integrated open-loop detection and diagnostics
- Configurable output limits for process safety
- CompactLogix bus-powered design
- Short-circuit and overvoltage protection
Applications
- Water and Wastewater Treatment: Precise chemical dosing and pump speed control.
- Food and Beverage Production: Flow and temperature regulation for bottling lines and mixing stations.
- Chemical and Oil/Gas Refineries: 4-20mA control signals for multiple valves and positioners.
- Advanced Manufacturing: Motor speed and tension control for VFDs and packaging machinery.
- Metals and Mining: Proportional valve control for hydraulic crushing and mineral processing.
Technical Specifications
| Product Model |
1769-OF8C |
| Output Channels |
8 |
| Output Current Range |
0-20 mA / 4-20 mA (0-21 mA range) |
| Resolution |
16 bit |
| Conversion Rate |
5 ms (all channels) |
| Accuracy |
±0.35% full scale at 25 degC |
| Bus Current Draw |
145 mA at 5V DC; 185 mA at 24V DC |
| Heat Dissipation |
2.69 Watts |
| Enclosure Type |
Open |
Installation Guidelines
-
Safety First: Always disconnect power from the system before installing or removing any I/O module to prevent electrical damage or injury.
-
DIN Rail Mounting: Ensure the DIN rail latches are in the closed position. Press the module firmly against a standard 35 mm DIN rail until the latches snap into place.
-
Panel Mounting: Secure the module to a grounded metal panel using two M4 or #8 panhead screws. Use the module as a template to ensure precise hole alignment.
-
Grounding: Ensure the mounting panel is properly grounded to minimize EMI interference.
-
Handling: This module is sensitive to electrostatic discharge (ESD). Handle by the edges and avoid touching connector pins.
FAQs
What is the 1769-OF8C?
The Allen-Bradley 1769-OF8C is an 8-channel, analog current output module designed for CompactLogix or MicroLogix 1500 controllers.
What is the resolution of the 1769-OF8C?
It features a 16-bit Digital to Analog Converter (DAC) resolution for high-precision signal output.
Does the 1769-OF8C have open-wire detection?
Yes, this module includes specialized open-wire detection, as well as overvoltage and short-circuit protection.
Are the output channels isolated?
No, the 1769-OF8C does not provide individual channel isolation.
