Is Your MicroLogix PLC Running Out of Output Points?
Adding outputs to a MicroLogix system usually means adding cost, wiring complexity, and downtime. The Allen-Bradley 1762-OW8 solves that problem directly. This eight-point AC/DC relay output module expands the embedded output capability of MicroLogix 1100, 1200, and 1400 controllers without replacing the base unit. It belongs to the Bulletin 1762 MicroLogix Expansion I/O Module series and installs on a DIN rail or panel.
What the 1762-OW8 Gives You
The 1762-OW8 is a relay-type output module with eight normally-open relay contacts. It organizes those outputs into two isolated groups: Group 0 covers channels 0 to 3, and Group 1 covers channels 4 to 7. Each group has four channels, and each point handles up to 2.5 A continuous current. The continuous current per common reaches 8 A, while the module total reaches 16 A. This layout lets you drive several loads from one compact module.
Key Specifications That Matter on the Floor
Wide AC/DC Voltage Range
The relay contact voltage ratings cover 24-125 VDC and 120-240 VAC. The operating voltage range extends from 5-265 V AC and 5-125 V DC. That flexibility means the same module can switch low-voltage DC pilot devices and higher-voltage AC loads without extra interface relays.
Current Capacity Per Point and Per Module
At 2.5 A per point, the 1762-OW8 can energize magnetic contactors, relay coils, and solenoid-actuated devices. The 8 A per common and 16 A per module limits support grouped loads. Plan your load distribution across the two groups to stay within these limits.
Signal Delay and Power Supply Distance
Each channel has a 10 ms signal delay for both ON-to-OFF and OFF-to-ON transitions. The module also carries a power supply distance rating of 6 modules, meaning it should be installed six modules away from the host device’s power supply. Heat dissipation is 2.9 total watts, which matters in enclosed panels.
Where This Module Fits
Discrete Device Control
Use the 1762-OW8 to energize pilot lamps, indicators, alarm annunciator panels, sirens, buzzers, and horns. These are common discrete devices in packaging, material handling, and process skids.
Motor and Drive Signaling
The module can signal RUN and START commands to Variable Frequency Drives, motor starters, and similar loads. This makes it useful when upgrading a MicroLogix 1200 panel that needs more output points for motor control.
Installation and Mounting
Mount the 1762-OW8 on an EN 50 022 35 x 7.5 mm or EN 50 022 35 x 15 mm DIN rail. For high-vibration or shock environments, use DIN rail end anchors. For greater vibration requirements, choose panel mounting. Keep debris from falling into the module during either mounting method. The module connects to the MicroLogix bus through the provided ribbon cable, terminated to the adjacent expansion module or the base controller. You must introduce this module in the hardware configuration.
Compatibility and Integration
The 1762-OW8 works with MicroLogix 1100, 1200, and 1400 Programmable Logic Controllers. It supports a rackless modular design that reduces replacement parts inventory and boosts cost savings. If you are replacing a failed output card or expanding an existing rack, this module keeps your architecture consistent.
Maintenance and Reliability
Inspect the module periodically for loose connections, dust buildup, and debris around the DIN rail. Relay contacts are wear points, so monitor switching frequency and load conditions. Keep the enclosure clean and dry with Pollution Degree 2 conditions. For safety-related maintenance, follow the manufacturer’s safety manual and do not disassemble the module.
Please verify current lifecycle status and availability with SpareTechPLC before ordering.
Selection Checklist Before You Buy
Confirm your controller model supports Bulletin 1762 expansion. Check that your load voltage falls within 5-265 V AC or 5-125 V DC. Verify your total current stays under 2.5 A per point, 8 A per common, and 16 A per module. Confirm you have the correct DIN rail or panel space. SpareTechPLC supplies this module and can help you confirm compatibility.
Frequently Asked Questions
How many outputs does the 1762-OW8 provide?
It provides eight AC/DC relay outputs, split into two groups of four channels each.
What controllers work with this module?
It is compatible with MicroLogix 1100, 1200, and 1400 controllers.
What is the maximum current per point?
Each output point is rated for 2.5 A continuous current.
How far from the power supply should it be installed?
The power supply distance rating is 6 modules.
Can I mount it on a panel instead of a DIN rail?
Yes, panel mounting is supported for greater vibration requirements.
