Honeywell SPS5710-2-LF 51198685-100

Description

Detailed parameter table

Honeywell SPS5710-2-LF 51198685-100

Product introduction

The Honeywell SPS5710-2-LF 51198685-100 is a high-integrity safety PLC module designed for critical safety instrumented systems (SIS) in industrial environments. As part of Honeywell’s Safety Manager portfolio, this module provides reliable monitoring of safety-related inputs, enabling rapid response to hazardous conditions in processes where human safety and asset protection are paramount.

Honeywell SPS5710-2-LF 51198685-100 features 8 safety-rated digital inputs, each capable of detecting signals from emergency stop buttons, interlocks, and trip sensors. Its SIL 3 certification ensures it meets the strictest safety requirements, making it suitable for applications such as chemical reactor overpressure protection, refinery shutdown systems, and pharmaceutical batch process safety. When integrated with modules like the TC-OAH061 for safe actuation control, the SPS5710-2-LF 51198685-100 forms a complete safety loop, from hazard detection to process shutdown.

Core advantages and technical highlights

SIL 3 safety integrity

Certified to SIL 3 (IEC 61508), the SPS5710-2-LF 51198685-100 delivers a high level of fault tolerance and diagnostic coverage (≥99%), ensuring it can detect and respond to hazardous conditions with minimal probability of failure. In a refinery’s crude distillation unit, this integrity is critical—any failure to detect a high-pressure condition could lead to explosions. The module’s architecture includes built-in self-tests that run continuously without interrupting operation, providing confidence in its ability to perform when needed.

Rapid response time

With a response time of ≤10ms (including diagnostic checks), the SPS5710-2-LF 51198685-100 ensures fast reaction to safety events. For example, when an emergency stop button is pressed on a chemical mixing line, the module detects the input signal within 10ms and triggers a shutdown sequence via connected output modules. This speed is far below the typical process lag time in such applications, preventing hazardous conditions from escalating.

Redundant and fault-tolerant design

The SPS5710-2-LF 51198685-100 supports redundant power supplies and can be configured in 2-out-of-2 (2oo2) or 2-out-of-3 (2oo3) architectures, eliminating single points of failure. In a nuclear power plant’s secondary cooling system, this redundancy ensures the module continues operating even if one power supply or communication path fails. Its fault-tolerant design also includes channel-to-channel isolation, preventing a fault in one input from affecting others.

Seamless integration with safety systems

Designed to work with Honeywell’s Safety Manager and other safety controllers, the SPS5710-2-LF 51198685-100 integrates smoothly into existing safety loops. It communicates via a safety backplane, ensuring secure data transmission without interference from non-safety systems. The module’s compatibility with standard safety protocols allows it to interface with emergency shutdown valves controlled by modules like the TC-OAH061, creating a cohesive safety ecosystem that can be monitored and configured from a central safety engineering workstation.

Honeywell SPS5710-2-LF 51198685-100

Typical application scenarios

Chemical plant emergency shutdown systems

In a plant producing industrial solvents, the SPS5710-2-LF 51198685-100 monitors safety inputs from gas detectors, pressure relief valve sensors, and emergency stop buttons. If a flammable gas leak is detected (via input channel 1), the module processes the signal within 10ms and triggers a shutdown command—sent via a safety output module—to isolate the affected area. Its SIL 3 rating ensures this response is reliable even in the presence of minor faults, preventing potential explosions or toxic exposures.

Oil and gas platform safety loops

On offshore oil platforms, the SPS5710-2-LF 51198685-100 is used in fire and gas safety systems. It receives inputs from flame detectors and heat sensors mounted around process equipment, continuously checking for hazardous conditions. In the event of a fire, the module activates deluge systems and emergency shutdown valves, with its redundant design ensuring operation even during harsh weather conditions or partial power loss. The module’s ATEX certification allows safe operation in Zone 2 hazardous areas, where flammable vapors may be present.

Pharmaceutical manufacturing safety

In biopharmaceutical cleanrooms, the SPS5710-2-LF 51198685-100 monitors door interlocks, pressure differential sensors, and equipment guards. If a cleanroom door is opened during a sterile batch process (detected via input channel 3), the module immediately signals the process controller to pause the batch and activate alarms. Its ability to operate in temperature-controlled environments (20-25°C) and resist electromagnetic interference from nearby equipment ensures reliable performance in these sensitive manufacturing spaces.

Related model recommendations

• Honeywell SPS5720-2-LF 51198686-100: Safety output module that pairs with the SPS5710-2-LF 51198685-100, providing 8 safety-rated outputs for activating shutdown devices.
• Honeywell SPS5700-CPU 51198684-100: Safety controller that coordinates multiple SPS5710-2-LF 51198685-100modules in a safety system, executing safety logic.
• Honeywell TC-OAH061: Analog output module used in non-safety control loops alongside the SPS5710-2-LF 51198685-100in integrated process and safety systems.
• Honeywell F860-CA: Terminal plate for secure termination of safety input wiring to the SPS5710-2-LF 51198685-100, ensuring proper grounding and isolation.
• Honeywell SPS5710-2-LF-R 51198685-101: Redundant version of the SPS5710-2-LF 51198685-100with pre-configured failover for 2oo2 architectures.
• Honeywell 8C-IP0102: Industrial Ethernet switch with safety-rated ports, facilitating communication between the SPS5710-2-LF 51198685-100and safety engineering workstations.
• Honeywell SPS5730-COMM 51198687-100: Communication module that adds Ethernet/IP to the SPS5710-2-LF 51198685-100for remote monitoring of safety inputs.

Installation, commissioning and maintenance instructions

Installation preparation

Before installing the SPS5710-2-LF 51198685-100, ensure the mounting cabinet is rated for the hazardous area (if applicable) and provides protection from dust and moisture. Mount the module on a 35mm DIN rail using M3 screws (torque 0.5-0.7Nm), ensuring at least 30mm clearance for cooling. Connect to a redundant 24V DC power supply using 16-20AWG twisted-pair cables, with separate fuses (1A) for each power input. For field wiring, use shielded cables terminated at a F860-CA terminal plate, grounding the shield at both ends to prevent noise in safety signals. Verify that all input devices (e.g., E-stops) meet safety ratings compatible with SIL 3.

Maintenance suggestions

Perform quarterly visual inspections of the SPS5710-2-LF 51198685-100 for loose connections or damage—tighten terminals to 0.6Nm if needed. Test input channels annually using a calibrated signal generator to ensure they detect faults and normal signals correctly. Review diagnostic logs monthly to check for intermittent faults, which may indicate wiring issues or failing input devices. When replacing the module, use only factory-certified units and perform a full safety loop test (including the TC-OAH061 if part of the loop) to verify proper operation before returning to service. Store spare modules in anti-static packaging in a temperature-controlled environment (-20°C to 30°C).

Service and guarantee commitment

Honeywell provides a 5-year warranty for the SPS5710-2-LF 51198685-100, covering defects in materials and workmanship under normal operating conditions. Our safety-certified technical support team offers 24/7 assistance for configuration, SIL verification, and integration with other safety components.

Factory repair services for the SPS5710-2-LF 51198685-100 include recertification to SIL 3 standards, with turnaround times under 7 business days. For critical applications, we offer a 48-hour emergency replacement service in major industrial regions to minimize safety system downtime. Honeywell also provides comprehensive training on safety lifecycle management for the SPS5710-2-LF 51198685-100, ensuring compliance with IEC 61511 and optimal performance throughout the module’s service life.