Procure now: Allen-Bradley 1769-OW8 Compact Digital Relay Output
Atlantechdrives provides you the 1769-OW8, a rugged 8-point digital relay output module for the CompactLogix and MicroLogix 1500 platforms. This module is specifically designed for applications requiring robust switching of AC or DC loads where a lower point density is sufficient, providing high current capacity and excellent galvanic isolation.
- Outputs: 8 Normally Open (N.O.) Relays
- Voltage: 5-265V AC / 5-125V DC
- Current Rating: 2.5A per point (max 16A per module)
- Groups: 1 group of 8 points
- Backplane Current: 125 mA @ 5.1V / 100 mA @ 24V
- Operating Temp: 0°C to 60°C
Technical Performance: High-Availability Mechanical Switching
Order now the 1769-OW8 to handle diverse field voltages with a single expansion card. The 1769-OW8 utilizes high-quality mechanical relays that offer a universal interface for control circuits. Its primary advantage is the ability to switch high-current loads up to 2.5 Amps per point, which is significantly higher than solid-state AC or DC modules. This makes it ideal for directly driving small motors, heavy solenoids, and heaters. The module is architected with reinforced insulation to ensure that high-voltage transients on the field side are completely isolated from the PLC’s internal logic. When you procure the 1769-OW8, you are acquiring a reliable, field-proven component that simplifies machine wiring by allowing a mix of AC and DC common rails across its terminals.
Expert Tips: Inductive Load Management
To ensure the 1769-OW8 reaches its rated mechanical life of 10 million cycles, managing inductive loads is critical. Switching solenoids or contactors creates a voltage spike that can damage relay contacts. We recommend installing an MOV (Metal Oxide Varistor) or a snubber across AC loads and a diode across DC loads. Furthermore, pay attention to the «Power Supply Distance Rating» of 8 modules; placing the OW8 too far from the system power supply can lead to unreliable relay coil actuation due to voltage drop on the 24V backplane rail. Sourcing from Atlantechdrives ensures the internal relay contacts are in pristine condition for maximum reliability.
Maintenance and Signal Reliability
During routine maintenance, verify that the terminal block screws are tightened to the recommended 7 lb-in (0.8 Nm) torque to prevent resistance heating at the high-current terminals. Inspect the front panel amber LEDs; they indicate that the internal coil is powered, which is the first step in troubleshooting any output failure. Sourcing an authentic 1769-OW8 from Atlantechdrives provides the hardware quality required for 24/7 industrial uptime.
FAQs
Q: What is the maximum AC voltage for the 1769-OW8?
A: It can safely switch up to 265V AC nominal.
Q: Can I use it to switch low-power signals like 5V DC?
A: Yes, the mechanical contacts can switch voltages as low as 5V DC, provided the minimum load current is met.
Do you need more references from this brand? Explore our full catalog of Allen-Bradley here.
For smaller relay-based control drops, this 8-point module is often used in architectures featuring the 1769-AENTR Ethernet adapter.
