Processor/Logic Solver for Safety Interlock Controllers

Product Specifications

Technical details and manufacturing context for Processor/Logic Solver

Definition

The Processor/Logic Solver is a specialized electronic component within a Safety Interlock Controller. It serves as the decision-making unit that receives signals from safety sensors and other input devices, processes them according to pre-programmed safety logic algorithms, and determines appropriate output actions to prevent hazardous conditions. By continuously monitoring and responding to potential risks, it ensures that machinery and processes operate within defined safety parameters. This component is designed for use in industrial machinery and equipment manufacturing, where it is integrated into safety systems to provide reliable and predictable performance. The Processor/Logic Solver typically features a rated supply voltage of 24 V DC ±10% (per IEC 61131-2), with power consumption not exceeding 15 W. It offers configurable digital inputs (8–32 channels) for safety sensors and configurable safety outputs (4–16 channels) for actuators. The worst-case logic execution time is ≤10 ms, meeting the requirements for safety-related applications. It is certified for high-risk applications with a Safety Integrity Level (SIL) of 3, in accordance with IEC 61508. The component operates within a temperature range of -40 to 85 °C and can be stored at -40 to 105 °C. It withstands relative humidity of 5–95% (non-condensing) and offers ingress protection ratings from IP54 to IP65. It is resistant to sinusoidal vibration (5–9 g, 10–150 Hz) and shock (30 g, half-sine pulse, 11 ms). The weight ranges from 0.5 to 2.0 kg, and typical dimensions are 100 x 120 x 60 mm (W x H x D), suitable for DIN rail mounting. Materials used include semiconductor silicon, copper, plastic polymers, and ceramic substrates. All specifications are reference values; verify model-specific details with the legal manufacturer or supplier.

Working Principle

The Processor/Logic Solver operates by continuously scanning input signals from safety sensors and devices, comparing these values against pre-configured safety thresholds and logic conditions. When inputs indicate a potentially hazardous condition, it executes programmed safety functions such as initiating shutdown sequences, activating alarms, or modifying process parameters to maintain safe operation. It typically uses deterministic processing to ensure predictable response times for critical safety functions.

Common Materials

Semiconductor silicon, Copper, Plastic polymers, Ceramic substrates

Technical Parameters

Parameter	Typical range	Notes & selection driver
Rated Supply Voltage	24 ±10% V DC	Outside this range, the logic solver may malfunction.IEC 61131-2
Power Consumption	≤15 W	Maximum power draw at rated voltage.
Number of Inputs	8–32 channels	Configurable digital inputs for safety sensors.
Number of Outputs	4–16 channels	Configurable safety outputs for actuators.
Logic Execution Time	≤10 ms	Worst-case cycle time for safety logic.IEC 61508
Safety Integrity Level	SIL 3	Certified for high-risk applications.IEC 61508
Operating Temperature	-40–85 °C	Extended range for harsh environments.IEC 60068-2-1
Storage Temperature	-40–105 °C	Non-operational storage limits.IEC 60068-2-2
Relative Humidity	5–95 % RH	Non-condensing conditions.IEC 60068-2-78
Ingress Protection	IP54–IP65	Protection against dust and water jets.IEC 60529
Vibration Resistance	5–9 g	Sinusoidal vibration, 10–150 Hz.IEC 60068-2-6
Shock Resistance	30 g	Half-sine pulse, 11 ms duration.IEC 60068-2-27
Weight	0.5–2.0 kg	Depends on configuration and housing.
Dimensions (W x H x D)	100 x 120 x 60 mm	Typical DIN rail mountable housing.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Central Processing Unit
Executes safety logic algorithms and processes input data

Material: Semiconductor silicon
Memory Module
Stores safety logic programs, configuration data, and operational parameters

Material: Semiconductor silicon with metal interconnects
Input/Output Interface
Connects to safety sensors and actuators, converting signals between external devices and the processor

Material: Copper, plastic, ceramic
Power Supply Circuit
Provides regulated power to all processor components and monitors power integrity

Material: Copper, semiconductor materials, plastic

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Safety Interlock Controller

View system integration details

Manufacturers of Processor/Logic Solver

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Frequently Asked Questions

What is the typical supply voltage for this Processor/Logic Solver?

The rated supply voltage is 24 V DC ±10%, as per IEC 61131-2. Always verify the exact voltage requirements for your specific model with the manufacturer.

How many input and output channels does it support?

It supports 8 to 32 configurable digital inputs for safety sensors and 4 to 16 configurable safety outputs for actuators. The exact number depends on the configuration.

What safety integrity level is this component rated for?

It is rated for SIL 3 according to IEC 61508, indicating suitability for high-risk applications. However, the final safety certification must be confirmed for the specific installation.

What are the environmental limits for operation?

It operates in temperatures from -40 to 85 °C, with storage from -40 to 105 °C. It withstands humidity of 5-95% non-condensing and has ingress protection from IP54 to IP65. Verify these limits for your model.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	N/A (enclosure-dependent, typically 0-2 bar for sealed units)
other spec:	Humidity: 5-95% non-condensing, Vibration: 5g RMS, Shock: 50g, 11ms
temperature:	-40°C to +85°C (operating), -55°C to +125°C (storage)

Processor/Logic Solver

Product Specifications

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards