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- KJ2231X1-EA1
- SIS Relay Output Module
- USA
- 36 x 229 x 51 mm
- 0.4kg
- Xiamen, China
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Emerson KJ2231X1-EA1 SIS Relay Output Module
Product Introduction:
The Emerson KJ2231X1-EA1 is a SIS (Safety Instrumented System) Relay Output Module, specifically engineered for critical safety control applications within Emerson’s DeltaV™ SLS (Smart Logic Solver) system. It is purpose-built for logic solvers that form the backbone of safety instrumented functions (SIFs) in process automation. This module provides discrete relay-based outputs that actuate final control elements such as shutdown valves, interlocks, alarms, and other devices where fail-safe performance is essential.
The KJ2231X1-EA1 offers reliable electromechanical relay operation with galvanic isolation, contact monitoring, and diagnostics to ensure integrity and fail-safe functionality. This module plays a vital role in Emergency Shutdown Systems (ESD), Burner Management Systems (BMS), and other high-integrity process safety functions.
Technical Specifications:
| Parameter | Specification |
|---|---|
| Model Number | KJ2231X1-EA1 |
| Output Type | Relay (Form A – Normally Open) |
| Number of Channels | 2 |
| Contact Rating | 5 A @ 250 VAC / 5 A @ 30 VDC |
| Output Isolation | Channel-to-channel and channel-to-ground |
| Safety Compliance | TUV-certified for SIL 3 (IEC 61508) |
| Diagnostic Features | Contact feedback monitoring, watchdog |
| Hot-swappable | Yes |
| Operating Voltage Range | 18–32 VDC |
| Mounting Type | Horizontal DIN rail in SLS baseplate |
| Product Series | DeltaV SLS SIS |
| Operating Temperature | -40°C to +70°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5% to 95% RH, non-condensing |
| Dimensions (W x H x D) | 36 x 229 x 51 mm |
| Weight | 0.4 kg |
Product Applications:
The KJ2231X1-EA1 is ideal for applications where fail-safe relay control is required as part of a Safety Instrumented System. These include:
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Emergency Shutdown (ESD) Systems: Relay actuation for process shutdown to prevent catastrophic failures.
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Burner Management Systems (BMS): Relay signaling to safely control fuel and air interlocks in combustion systems.
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Fire and Gas Safety Systems: Activate alarms, fire suppression, and isolation valves.
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High-Integrity Pressure Protection Systems (HIPPS): Relay triggering to isolate high-pressure process areas.
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Safety Interlocks: Relay outputs enforce logic sequences preventing unsafe conditions.
Key Advantages:
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SIL 3 Certified: Ensures the highest level of safety integrity for critical applications.
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Dual Relay Channels: Two independent output channels allow for flexible logic configurations.
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Galvanic Isolation: Protects the logic solver and upstream electronics from voltage spikes and transients.
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Built-in Diagnostics: Real-time feedback on relay contact position for enhanced troubleshooting and safety validation.
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Hot-Swappable Design: Enables quick replacement without powering down the system, improving uptime in safety systems.
Brand and Series:
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Brand: Emerson
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Product Series: DeltaV SLS (Smart Logic Solver) – Safety Instrumented System
The DeltaV SLS series is Emerson’s premier SIS solution, offering functionally safe modules designed in compliance with IEC 61508. It integrates seamlessly with DeltaV systems while maintaining physical and logical independence for critical safety operations.
Recommended Related Models (Same Series or Functionally Similar):
| Model Number | Description | Channels | Type | Dimensions (mm) | Weight |
|---|---|---|---|---|---|
| KJ2201X1-BA1 | SIS Digital Input Module | 16 | Digital Input | 36 x 229 x 51 | 0.4 kg |
| KJ2241X1-BB1 | SIS Analog Output Module | 8 | 4–20 mA Output | 36 x 229 x 51 | 0.4 kg |
| KJ2261X1-BC1 | SIS Thermocouple Input Module | 12 | TC Input | 36 x 229 x 51 | 0.4 kg |
| KJ2251X1-BA1 | SIS Analog Input Module | 8 | 4–20 mA Input | 36 x 229 x 51 | 0.4 kg |
| KJ2221X1-BA1 | SIS Relay Output Module (4 Channel) | 4 | Relay Output | 36 x 229 x 51 | 0.4 kg |
Popular Emerson Models:
| Model Number | Description | Channels | Type | Dimensions (mm) | Weight |
|---|---|---|---|---|---|
| KJ4001X1-BA2 | Power Controller | N/A | Power Module | 41.8 x 130.8 x 131 | 0.4 kg |
| KJ3221X1-BA1 | Analog Output HART Redundant Module | 8 | 4–20 mA Output | 41.8 x 130.8 x 131 | 0.4 kg |
| KJ3002X1-BG1 | Discrete Input Module | 16 | Digital Input | 41.8 x 130.8 x 131 | 0.4 kg |
| KJ4010X1-BG1 | Analog Input HART Redundant Module | 8 | 4–20 mA Input | 41.8 x 130.8 x 131 | 0.4 kg |
| KJ3001X1-BB1 | Isolated Digital Input Module | 8 | 120 VAC Input | 41.8 x 130.8 x 131 | 0.4 kg |
Frequently Asked Questions (Q&A):
Q1: What type of outputs does the KJ2231X1-EA1 provide?
A1: This module provides relay-based outputs, specifically Form A (normally open) mechanical relay contacts.
Q2: Is this module SIL-certified for use in safety applications?
A2: Yes, it is TUV-certified for SIL 3 compliance according to IEC 61508 standards.
Q3: How many relay channels are included?
A3: The module includes 2 independent relay output channels.
Q4: What is the maximum switching capacity per relay?
A4: Each relay can handle up to 5 A at 250 VAC or 30 VDC.
Q5: Can the module be replaced while the system is online?
A5: Yes, the module is hot-swappable, which means you can replace it without shutting down the system.
Q6: What kind of diagnostics does it offer?
A6: It provides contact monitoring and watchdog supervision, helping verify relay operation and system integrity.
Q7: What systems is the KJ2231X1-EA1 compatible with?
A7: It is specifically designed for the DeltaV SLS Smart Logic Solver, part of Emerson’s SIS architecture.
Q8: Does the module provide electrical isolation?
A8: Yes, it includes galvanic isolation both channel-to-channel and channel-to-ground for maximum system protection.
Q9: What are the module’s physical dimensions and weight?
A9: The unit measures 36 x 229 x 51 mm and weighs 0.4 kg.
Q10: In what environments can the module be used?
A10: It is rated for -40°C to +70°C operation, suitable for harsh industrial and process plant environments.
Safety You Can Trust
Dependable relay output for your most critical shutdowns — the KJ2231X1-EA1 delivers SIS-grade reliability and peace of mind.
Engineered for SIL 3 Integrity
Certified for the toughest safety demands, this module powers your Emergency Shutdowns with uncompromising compliance.
Built for the Unexpected
With diagnostics, isolation, and hot-swap capabilities, the KJ2231X1-EA1 is your fail-safe ally in a world full of uncertainties.
When Safety is Non-Negotiable
Emerson’s SIS Relay Module ensures decisive control, certified protection, and relentless performance when it matters most.