

The Allen-Bradley 1756-OA16I is a high-density AC output module within the ControlLogix family, engineered for demanding industrial applications requiring isolated switching of AC loads. This module features 16 individually isolated output channels, each capable of handling 120/240V AC at up to 2A per point (with total current limited by thermal constraints), making it ideal for controlling motor contactors, solenoid valves, and panel indicators. The 1756-OA16I employs opto-isolation technology to separate the backplane logic from field-side power, ensuring robust performance even in electrically noisy environments. Its design includes field-replaceable fuses per group and diagnostic LEDs for real-time fault detection. For seamless integration, the module supports both on-state and off-state leakage current specifications compliant with IEC 61131-2 standards. Below is the detailed technical specification table:
| Parameter | Specification |
|---|---|
| Product Type | AC Output Module |
| Series | ControlLogix 1756 |
| Number of Outputs | 16 (isolated, 4 groups of 4) |
| Output Voltage Range | 85-265V AC (47-63 Hz) |
| Output Current per Point | 2A continuous (max), derated at high ambient temperature |
| Total Module Current | 8A max (sum of all outputs) |
| Backplane Power Consumption | 5V DC Standard Models 250 mA typical, 24V DC Standard Models 50 mA (for field logic) |
| Isolation | 2500V RMS between field and backplane; 1500V RMS between groups |
| Output Type | Triac (AC switching), zero-crossing turn-on for reduced EMI |
| Leakage Current (Off-State) | Less than 1.5 mA at 120V AC, less than 3 mA at 240V AC |
| Surge Current | 30A for 1 cycle (non-repetitive) |
| Fuse Protection | Replaceable 5x20 mm fuses per group (1A or 2A, user-configurable) |
| Diagnostics | LED per channel (green for on, red for fault), module status LED |
| Wiring | Removable terminal block (20-14 AWG wire) |
| Operating Temperature | 0°C to 60°C (32°F to 140°F) |
| Storage Temperature | -40°C to 85°C (-40°F to 185°F) |
| Humidity | 5% to 95% non-condensing |
| Shock and Vibration | IEC 60068-2-27 (shock), IEC 60068-2-6 (vibration) |
| Certifications | CE, UL 508, CSA C22.2 No. 142, ATEX Zone 2 (optional) |
| Weight | Approximately 0.35 kg (0.77 lbs) |
| Dimensions (H x W x D) | 144 mm x 35 mm x 105 mm (5.67 in x 1.38 in x 4.13 in) |
| Mounting | ControlLogix chassis (any slot, hot-swappable) |
| Compatible Software | Studio 5000 Logix Designer v20 or later |

What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
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2020/02/22