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The 1769-OW8I (Part Number: 1769-OW8I) is a robust electromagnetic relay output module designed for the CompactLogix and MicroLogix 1500 systems. This module is engineered for applications requiring high-level circuit isolation, featuring eight normally open contacts that are...
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The 1769-OW8I (Part Number: 1769-OW8I) is a robust electromagnetic relay output module designed for the CompactLogix and MicroLogix 1500 systems. This module is engineered for applications requiring high-level circuit isolation, featuring eight normally open contacts that are individually isolated. This architecture allows the module to switch multiple independent voltages across different circuits simultaneously, providing significant flexibility in complex wiring environments.
Built to withstand industrial electrical noise and power fluctuations, the 1769-OW8I offers a broad operating voltage range, making it suitable for both AC and DC load switching. Its reinforced insulation ratings ensure safety and signal integrity between the output points and the system backplane, as well as between individual output groups.
| Specification | Details |
|---|---|
| Output Channels | 8 Normally Open (N.O.) contacts |
| Isolation Configuration | Individually isolated points (point-to-point) |
| Voltage Range (AC) | 5V AC to 265V AC |
| Voltage Range (DC) | 5V DC to 125V DC |
| Backplane Current Draw | 125 mA at 5.1V; 100 mA at 24V |
| Signal Delay | 10 ms (maximum) for both On and Off states |
| Contact Load Rating | 2.5 A per point (max 16 A per module) |
| Thermal Dissipation | 2.83 Watts (max) |
| Dielectric Strength | Tested at 1836V AC for 1 second or 2596V DC for 1 second |
| Physical Profile | 118 mm x 35 mm x 87 mm (HxWxD) |
The 1769-OW8I is typically used in:
Motor control centers
Solenoid valve activation
Interposing relay logic
It is ideal for applications where different voltage sources (e.g., a mix of 120V AC and 24V DC) must be controlled by a single PLC expansion module without common-point interference.
What is the advantage of "Individually Isolated" outputs?
Unlike standard relay modules that share a common return (COM), the 1769-OW8I allows each output to have its own unique power source and return path, preventing electrical faults in one circuit from affecting others.
Does this module support high-speed switching?
No, due to the mechanical nature of electromagnetic relays, the switching delay is 10ms. For high-speed or high-frequency switching, solid-state output modules are recommended.
