The 1769-OW16 is a high-density electromechanical relay output module for Allen-Bradley CompactLogix and MicroLogix 1500 families. It provides 16 normally open (N.O.) contacts, offering a robust solution for switching diverse AC and DC loads within a single slot.
With two isolated groups of eight points each, engineers can control multiple circuits with varying voltage levels or phases. Its mechanical relay design ensures zero off-state leakage current, making it ideal for safety interlocks, pilot lights, and applications where solid-state leakage could cause false "ON" states.
| Specification | Details |
|---|---|
| Module Identifier | 1769-OW16 |
| Output Points | 16 Normally Open (N.O.) |
| Grouping | 2 isolated groups (8 points per group) |
| Operating Voltage | 5–265V AC / 5–125V DC |
| Max Current per Point | 2.5 A |
| Max Current per Module | 20 A |
| Contact Ratings (AC) | 7.5 A Make (1800 VA) / 0.75 A Break (180 VA) @ 240V AC |
| Contact Ratings (DC) | 0.22 A @ 125V DC (28 VA) |
| Signal Delay | 10 ms max (ON/OFF) |
| Backplane Current Draw | 205 mA @ 5.1V DC / 180 mA @ 24V DC |
| Heat Dissipation | 4.75 W max |
| Power Supply Distance Rating | 8 slots max from system power supply |
| Wiring Capability | 22–14 AWG (Solid), 22–16 AWG (Stranded) |
| Physical Weight | 0.45 kg |
| Dimensions | 118 x 52.5 x 87 mm |
Controllers: Directly connects to CompactLogix 5370 CPUs or MicroLogix 1500 bases.
Remote I/O: Compatible with 1769-AENTR (EtherNet/IP) and 1769-ADN (DeviceNet) adapters.
Power Supplies: Designed for use with 1769-PA2, 1769-PB2, 1769-PA4, or 1769-PB4 modules.
Mounting: Supports 35mm DIN rail or direct panel mounting for high-vibration environments.
Can I switch 120V AC and 24V DC simultaneously?
Yes. With two isolated groups (0–7 and 8–15), you can supply 120V AC to Group 1 and 24V DC to Group 2 without electrical interference.
Why is there a 10 ms switching delay?
The module uses electromechanical relays, which require physical contact movement. This, combined with contact debounce logic, results in a 10 ms delay. For microsecond switching applications, a solid-state module like the 1769-OB16 is recommended.
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