Allen-Bradley 1794-OW8 FLEX I/O 8-Point Relay Output Module
Allen-Bradley 1794-OW8 is a FLEX I/O relay output module with eight normally-open, isolated electromechanical contact outputs for switching AC or DC loads directly from a 1794 FLEX I/O bank.
Overview
The 1794-OW8 mounts on a 1794 terminal base beside the FLEX I/O adapter and provides eight electrically isolated Form A relay contacts. It draws only 35 mA from the FlexBus, tolerates the mechanical stress of relay switching (30 milliohm initial contact resistance, 100,000 operations at rated load), and reports the state of each output through eight yellow point indicators.
Key Features
- 8 normally-open isolated electromechanical relay outputs
- 30 milliohm initial contact resistance; 1.2 ms average bounce time
- 10 ms maximum output signal delay in both transitions
- 100,000 operations minimum contact life at rated loads
- FlexBus draw only 35 mA @ 5 V DC; power dissipation 5.5 W
- 8 yellow status indicators; keyswitch position 9
- Open-style enclosure; DIN rail mount on 1794 terminal base
Technical Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Allen Bradley (Rockwell Automation) |
| Product Line | FLEX I/O (1794) |
| Series | FLEX I/O 1794 |
| Part Number / Catalog No. | 1794-OW8 |
| UPC | 662468112291 |
| Product Type | Relay Output Module (FLEX I/O) |
| Number of Outputs | 8, normally-open isolated electromechanical relays |
| Contact Resistance | 30 milliohms initial |
| Average Bounce Time | 1.2 ms |
| Maximum Output Signal Delay | 10 ms (on-to-off and off-to-on) |
| Contact Life Expectancy | 100,000 operations minimum at rated loads |
| FlexBus Current | 35 mA @ 5 V DC |
| Nominal Supply Voltage | 24 V DC |
| Power Dissipation | 5.5 W (18.8 BTU per hour) |
| Status Indicators | 8 yellow indicator lights |
| Keyswitch Position | 9 |
| Dimensions (H × W × D) | 9.4 x 9.4 x 6.9 cm (3.7 x 3.7 x 2.7 in) |
| Weight | 0.56 lbs (0.26 kg) |
| Operating Temperature | 0 to 55 °C (32 to 131 °F) |
| Country of Origin | Singapore |
Applications
Typical uses include interposing low-power logic signals to contactors, motor starters, solenoid valves, alarm horns and lighting circuits — anywhere a FLEX I/O point must switch a genuine power load rather than a semiconductor output.
Why Buy from Us
This module is available new in original factory packaging, fully tested and backed by a standard warranty of 1 year. We ship worldwide with careful anti-static packaging and fast dispatch. Quantity discounts and repair/exchange options are available on request.
Documents
INSTALLATION INSTRUCTIONS
| Resource | Title | Link |
|---|---|---|
| Publication | 1794-IN019 — FLEX I/O Relay Output Modules (1794-OW8) Installation Instructions (English) | 1794-in019_-en-p.pdf |
