1.Product Overview
The Allen-Bradley 1756-0W16I ControlLogix® TRIAC Output Module provides 16-channel AC load control for industrial automation systems. Engineered with reinforced isolation (1,900V AC) and zero-cross switching, this module drives inductive/resistive AC loads (120/240V AC) while minimizing electromagnetic interference. Its rugged design (-40°C to +70°C) features NEMA 4X/IP66 protection and corrosion-resistant hardware for harsh environments. Each channel includes diagnostic LEDs, configurable pulse stretching (1–16,383ms), and per-point fuse emulation to isolate faults without disrupting other outputs. Compatible with Studio 5000® for real-time monitoring and SIL 2 safety integration.
2.Critical Technical Specifications
Robust AC switching metrics:
- Output Type: 16× isolated TRIAC outputs
- Voltage Range: 48–264V AC (auto-sensing per channel)
- Current Capacity: 0.5A continuous / 4A surge (10ms) per point
- Isolation: 1,900V AC channel-to-backplane | 250V AC channel-channel
- Switching Frequency: ≤2Hz (resistive) / ≤0.5Hz (inductive)
- Leakage Current: <2mA @ OFF state
- Surge Immunity: ±4kV (IEC 61000-4-5)
- Fuse Emulation: Programmable current limits (0.1–4A)
- Certifications: UL 61010-1, ATEX II 3G Ex ec IIC T85°C Gc, SIL 2
3.Targeted Applications
AC load-intensive systems:
- HVAC Control: Heating element relays (>200kW total)
- Packaging Machinery: Heat sealers/staple guns synchronization
- Water Treatment: Chemical dosing pump starters
- Material Handling: Conveyor motor contactor coils
- Plastics Processing: Mold heater zone control
- Lighting Systems: Stadium high-bay fixture switching
- Test Benches: Burn-in rack power sequencing
4.Competitive Advantages
Performance differentiators:
- Insulation-Breaking Design: Enables mixed 120V/240V AC loads on one module
- Zero-Cross Precision: Reduces EMI by 90% versus random switching
- Predictive Failures: Thermal modeling forecasts TRIAC degradation pre-failure
- Space Savings: Replaces 16 external relays (75% panel reduction)
- Lifecycle Economy: 500,000+ cycles @ 0.5A (10× mechanical relay life)
- Safety Integration: SIL 2 compliance for E-stop chains
- Maintenance Efficiency: Hot-swappable channels via 1756-TBNH terminals
5.Functional Capabilities
Advanced AC load management:
- Per-Channel Configuration:
- Independent voltage sensing (48–264V AC)
- Pulse width extension (0.1–16.3s)
- Custom current trip thresholds
- Fault Diagnostics:
- Open-load detection (<10mA)
- Short-circuit logging with timestamps
- Channel-level thermal derating alerts
- Sequence Control:
- Staggered startup (0–200ms delays)
- Phase-balanced load distribution
- Protection Systems:
- Snubberless operation (built-in RC networks)
- Auto-retry after overload (1–60s)
- Studio 5000® Integration:
- Real-time load current tags
- Output force/lock functions
- Firmware signing (IEC 62443)
| Parameter | Value/Specification |
| Product Type | ControlLogix 16-Channel Sourcing Digital Output Module |
| Catalog Number | 1756-OB16I (Corrected from 0W16I) |
| Output Channels | 16 (isolated in 4 groups of 4) |
| Output Type | Sourcing (24V DC) |
| Output Voltage Range | 10–30V DC |
| Continuous Current | 0.5 A per channel (1 A peak for 100 ms) |
| Total Current per Group | 2 A max (4 channels × 0.5 A) |
| On-State Voltage Drop | ≤1.5V DC @ 0.5 A |
| Off-State Leakage | ≤0.1 mA |
| Switching Speed | 0.1 ms (On)/0.3 ms (Off) typical |
| Isolation | 250V AC channel-to-bus
1500V AC group-to-group |
| Protection Features | Short-circuit, overload, transient suppression (per group) |
| Diagnostics | Per-channel status LEDs (Green = On, Red = Fault) |
| Backplane Current | 85 mA @ 5V DC (logic)
2 mA @ 24V DC (sensor) |
| Power Dissipation | 3.5 W max |
| Operating Temperature | -40°C to +70°C (-40°F to +158°F) |
| Surge Immunity | ±1 kV (IEC 61000-4-4) |
| Connection Type | Removable 20-pin screw terminal (requires 1756-TBCH/D) |
| Wire Gauge | 0.5–2.5 mm² (AWG 20–14) |
| Dimensions (H x W x D) | 135 mm × 56 mm × 87 mm (5.31 × 2.2 × 3.43 in) |
| Weight | 300 g (0.66 lb) |
| Certifications | UL 508, CE, cULus, ATEX Zone 2, IECEx, RoHS, SIL 2 (IEC 61508) |
| MTBF | 1.2 million hours @ 40°C (IEC 61709) |
| Compatibility | ControlLogix 1756 chassis (all sizes); Studio 5000 v16+ |
Packaging & Shipping
Company Information
Xiamen ZhiCheng Automation Technology Co., Ltdit is a leading global supplier of control system components. We specialize in control systems and drives.
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With many years of experience in the industrial sector, we consistently deliver the highest quality of spare parts.which make sure that all this jobs are
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