The Allen-Bradley 1756-L61S is a robust safety controller designed for mission-critical industrial automation systems where reliability and fail-safe operation are paramount. As part of the ControlLogix family, this controller delivers deterministic performance for safety-related functions, including emergency shutdown, fire and gas detection, and machinery guarding. With its dual-CPU architecture and built-in diagnostics, the 1756-L61S ensures continuous monitoring and rapid fault response, meeting SIL 2 and SIL 3 requirements per IEC 61508. Ideal for oil and gas, chemical processing, and power generation, it offers seamless integration with standard ControlLogix I/O modules and supports both Ethernet/IP and ControlNet networks for efficient data exchange. The unit is factory-sealed, 100% original, and available for immediate shipment worldwide, making it a reliable choice for upgrading or expanding existing safety systems.
| Specification |
Details |
| Product Type |
Safety Controller |
| Model |
1756-L61S |
| Processor Type |
Dual-CPU (Safety and Standard) |
| Memory Capacity |
2 MB User Memory (Standard), 1 MB Safety Memory |
| Safety Rating |
SIL 2 / SIL 3 per IEC 61508 |
| Communication Protocols |
EtherNet/IP, ControlNet, DeviceNet (via adapter) |
| Backplane Support |
ControlLogix Chassis (1756-A Series) |
| Power Supply Requirement |
24V DC (via 1756-PB72 or similar) |
| Operating Temperature |
-20°C to +60°C (-4°F to +140°F) |
| Storage Temperature |
-40°C to +85°C (-40°F to +185°F) |
| Relative Humidity |
5% to 95% (non-condensing) |
| Shock Resistance |
30g (operational), 50g (non-operational) |
| Vibration Resistance |
5g Standard Models 10-500 Hz |
| Enclosure Type |
Open-style (for use in hazardous locations with appropriate barrier) |
| Certifications |
CE, UL, cUL, TUV, ATEX (Zone 2), IECEx |
| Dimensions (H x W x D) |
5.0 in x 3.5 in x 4.5 in (127 mm x 89 mm x 114 mm) |
| Weight |
1.2 lb (0.54 kg) |
| Warranty |
Standard 1-year (extended available) |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22