GE IS420YDOAS1B Mark VIeS Discrete Output Module

Product Overview

The GE IS420YDOAS1B is a discrete output module used in the Mark VIeS Functional Safety System. It provides reliable and safe interface between control logic and discrete actuators. Designed for SIL2/SIL3 applications, it supports simplex and TMR configurations and integrates seamlessly into safety-critical industrial processes.

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Technical Specifications

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Applications

• Plant emergency shutdown systems

• Burner management systems

• Fire and gas detection systems

• Critical process control

• Any application requiring high-reliability discrete actuation under safety constraints

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Key Advantages

• Compliant with IEC 61508 SIL2/SIL3 standards

• Supports redundancy options (simplex, TMR)

• Built-in diagnostics with visual health indicators

• Robust operation in harsh industrial environments

• Compact DIN-rail mounting

• Flexible wetting and fusing configurations via optional daughterboards

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Frequently Asked Questions

Q1: What redundancy configurations does the IS420YDOAS1B support?
A1: It supports both Simplex and Triple Modular Redundant (TMR) configurations.

Q2: How many output channels are available?
A2: It provides 12 Form-C relay discrete output channels.

Q3: What safety certification does it meet?
A3: It is compliant with IEC 61508 standards for SIL2 and SIL3 applications.

Q4: Is it suitable for hazardous environments?
A4: Yes, it is certified for Class 1 Div 2, Class 2 Zone 2, and ATEX areas.

Q5: What is the rated load per relay output?
A5: Maximum 2.25A at 24VDC or 120/240VAC, 0.6A at 125VDC.

Q6: What are the mounting requirements?
A6: It is designed for DIN-rail mounting.

Q7: Can it operate in extreme temperatures?
A7: Yes, the operating range is -40°C to +70°C.

Q8: What diagnostics are included?
A8: Includes power-up self-test, feedback check, loss of wetting voltage, open fuse detection, and incorrect board check.

Q9: Are optional wetting/fusing configurations available?
A9: Yes, optional daughterboards provide wetting and fusing options.

Q10: What is the weight and size of the module?
A10: The module measures 170 x 157 x 153 mm and weighs 1.2 kg.

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