GE IS20OSNRLH2A（IS230SNRLH2A) Discrete Output Relay Module

Product Overview

The GE IS20OSNRLH2A（IS230SNRLH2A) is a high-reliability discrete output relay module designed for the Mark VIe and Mark VIeS turbine control systems. It enables precise control of external devices, including solenoids, contactors, and alarms, ensuring deterministic and fault-tolerant operation in mission-critical industrial environments. Moreover, its hot-swappable design allows maintenance without system downtime, maximizing operational efficiency.

Key Features

• Provides 12 isolated relay outputs for flexible discrete control.
• Form-C (SPDT) electromechanical relays support high-current switching.
• Built-in suppression protects outputs against inductive load damage.
• Redundant IONet interface ensures fault-tolerant turbine and process control.
• Wide operating temperature range and conformal coating improve durability in harsh conditions.
• Hot-swappable design reduces maintenance downtime and operational risk.

Technical Specifications

Electrical Characteristics

• Outputs: 12 isolated relay channels
• Relay Type: Form-C (SPDT) electromechanical
• Contact Ratings: 125 V AC, 5 A resistive; 30 V DC, 5 A resistive
• Isolation: 1500 V RMS between channels and system ground
• Switching Speed: < 10 ms typical
• Protection: Built-in suppression for inductive loads

Power & Interface

• Power Supply: 28 V DC nominal (18–36 V DC range)
• Consumption: ~8 W typical
• Interface: IONet Ethernet connectivity
• Redundancy: Dual IONet support for fault-tolerant operation

Mechanical & Environmental

• Form Factor: Compact plug-in module for Mark VIe I/O racks
• Dimensions: 147 × 51 × 116 mm
• Weight: 0.5 kg
• Operating Temperature: –40 °C to +70 °C
• Storage Temperature: –40 °C to +85 °C
• Humidity: 5–95% non-condensing
• Coating: Conformal coating for corrosion resistance (G3 standard)

Reliability & Compliance

• MTBF: > 250,000 hours
• Certifications: CE, UL, IEC 61508 SIL 2 compliant
• Hot-swappable design for online replacement without system shutdown

Typical Applications

• Turbine and generator control systems requiring precise discrete actuation.
• Industrial automation where solenoids, alarms, and contactors need reliable switching.
• Redundant process control systems for critical industrial plants.
• Applications demanding deterministic relay switching in harsh or corrosive environments.

FAQ

Q1: Can the module operate in extreme temperatures? Yes, the IS20OSNRLH2A functions reliably from –40 °C to +70 °C.

Q2: How many devices can it control simultaneously? It provides 12 isolated relay outputs for independent control of multiple devices.

Q3: Is it safe to replace the module while the system is running? Absolutely. Its hot-swappable design allows safe online replacement without shutting down.

Q4: Does it support redundant network connections? Yes, dual IONet connections ensure fault-tolerant operation for mission-critical applications.