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Phone: +86 16626708626Description
Key Technical Specifications
- Part Number: 1769-OW16
- Manufacturer: Allen-Bradley / Rockwell Automation
- Product Family: Compact I/O
- Module Type: Relay output module
- Output Channels: 16
- Output Type: AC/DC normally open relay
- Operating Voltage Range: 5-265 V AC; 5-125 V DC
- Current per Point: 2.5 A max
- Current per Common: 10 A max
- Current per Module: 20 A max
- Bus Current Draw @ 5.1 V DC: 205 mA
- Bus Current Draw @ 24 V DC: 180 mA
- Heat Dissipation: 4.75 W
- On/Off Delay: 10 ms / 10 ms
- Off-State Leakage: 0 mA max
- On-State Current: 10 mA min at 5 V DC
- Operating Temperature: 0-60 °C
- Mounting: DIN rail or panel
- Dimensions: 118 x 35 x 87 mm
- Weight: About 0.6 lb
Product Introduction
The Allen-Bradley 1769-OW16 is a CompactLogix relay output module used to switch AC and DC field loads from a PLC. It provides 16 normally open contacts in a compact I/O form factor for solenoids, lamps, interposing relays, and general-purpose discrete control.
It is a good fit when you need one module to handle mixed-voltage loads. The 2.5 A per point rating, 10 A per common, and 20 A per module capacity make it practical for panel work where a transistor output card would be too limited.
1769-OW16
1769-OW16
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance to this Part | Quick Check Method | Recommendation |
|---|---|---|---|---|
| Output LED is on, but load does not switch | Open field wire, missing supply, or bad load | ✅ High | Measure voltage across the load and check continuity through the contact | Verify the field side before replacing the module |
| One point works intermittently | Worn relay contact or loose terminal screw | ✅ High | Cycle the point while measuring continuity and inspect terminal torque | Re-terminate wiring; replace if the contact is unstable |
| Several points in one group fail | Common feed missing or group protection open | ✅ High | Check the common terminal and load-side supply | Restore the group power path first |
| Output stays energized | Welded relay contact or backfeed from the load circuit | ✅ High | Remove the field wire and retest the contact state | Replace only after isolating the external circuit |
| Outputs chatter | Control logic cycling or unstable field supply | ⚠️ Medium | Monitor the commanded state and measure supply stability | Fix the upstream control issue first |
| Module not recognized by controller | Poor seating, bus issue, or wrong slot setup | ⚠️ Medium | Reseat the module and check controller diagnostics | Verify the expansion bus and configuration |
| Excess heat at the module | Overcurrent load or high switching rate | ✅ High | Measure actual load current against the rating | Reduce the load or add an interposing device |
If the issue persists, send support photos of the wiring, controller diagnostics, and module LEDs.
Frequently Asked Questions
Q: Is the 1769-OW16 a relay output module?
A: Yes. It uses 16 normally open relay contacts, which is why it can switch both AC and DC loads.
Q: Can I use it for 24 VDC solenoids?
A: Yes, that is a common application. Just keep the current within the point, common, and module limits.
Q: Is it the same as a transistor output card?
A: No. Relay outputs are slower, but they give you dry contacts and better flexibility for mixed AC/DC loads.
Q: What controllers work with it?
A: It is used in CompactLogix and MicroLogix 1500 systems. Always confirm the exact platform and expansion layout before ordering.
Q: Why is this usually sold as New Surplus?
A: Because it is often pulled from unused inventory or project overrun stock. That is normal for legacy Compact I/O parts.
Q: What should I check before assuming the module is bad?
A: Check the load supply, common terminal, field wiring, and relay continuity first. Most relay output complaints are wiring or load-side problems, not a failed module.
Q: What is the most common install mistake?
A: Mixing up the common feeds for the two output groups. That one wastes time fast, so take a photo of the existing wiring before you pull the old card.
