GE IS420TBCIS2C

Technical Specifications

• Manufacturer: General Electric (GE) Energy, GE Boards & Turbine Control
• Product Series: Mark VIeS Speedtronic Control System
• Module Type: Discrete Input Terminal Board (Contact Input Termination Board)
• Part Number: IS420TBCIS2C (Hardware Revision S2C)
• Input Channels: 32 isolated contact input channels, individually protected
• Input Voltage: 24 V DC ±10% (nominal), compatible with 24 V DC field devices
• Isolation: Channel‑to‑channel isolation (2500 Vrms) for noise immunity and safety
• Signal Conditioning: Each channel includes surge suppression and high‑frequency noise filtering
• Terminal Blocks: 2 terminal blocks (TB1, TB2) with 48 silver‑plated terminals total (24 per block) for field wiring
• Power Supply: 24 V DC (nominal), voltage range 18–32 V DC; dual redundant power inputs; typical power consumption 2 W
• PCB Coating: Conformal coating for environmental protection against dust, moisture, and corrosion
• Operating Temperature: -40°C to +70°C
• Storage Temperature: -55°C to +85°C
• Humidity Range: 5%–95% non‑condensing
• Vibration Resistance: Compliant with IEC 60068‑2‑6 (10–500 Hz, 10 g peak)
• Shock Resistance: Compliant with IEC 60068‑2‑27 (50 g, 11 ms duration)
• Certifications: UL/cUL Class I, Div 2 compliant; IEC 61010‑1 safety certified; CE marked for EMC compliance (EN 61326‑1)
• Dimensions: 110 mm × 60 mm × 67 mm (4.33 in × 2.36 in × 2.64 in)
• Weight: 0.14 kg (0.31 lbs)
• Mounting Options: 35 mm DIN‑rail mounting with bracket
• Diagnostic Indicators: Per‑channel status LEDs (Active/Inactive) for rapid fault detection

Functional Features

• 32 Isolated Input Channels: Provides 32 individually isolated contact inputs for reliable signal acquisition from field devices.
• Surge Suppression & Noise Filtering: Each channel includes built‑in surge suppression and high‑frequency noise filtering to protect against voltage spikes and electromagnetic interference.
• Dual Terminal Blocks: Two terminal blocks (TB1, TB2) with 24 terminals each enable organized field wiring and easy maintenance.
• Channel‑to‑Channel Isolation: 2500 Vrms isolation between channels ensures noise immunity and safety in industrial environments.
• Dual Redundant Power Inputs: 24 V DC redundant inputs (18–32 V DC range) prevent power‑related downtime in critical applications.
• Conformal Coating: Protects against dust, moisture, and chemical exposure in harsh industrial settings.
• DIN‑Rail Mounting: Versatile mounting for space‑constrained industrial cabinets and control panels.
• LED Diagnostics: Per‑channel status LEDs enable rapid fault detection (open circuit, short circuit, signal loss).
• ToolboxST Compatibility: Integrated with GE ToolboxST for configuration, status monitoring, and diagnostic reporting.
• Mark VIeS Integration: Seamless compatibility with Mark VIeS I/O modules and controllers for unified system operation.

Application Scenarios

• Mark VIeS I/O Integration: Terminal interface for connecting 32 discrete input signals (e.g., limit switches, pushbuttons) to Mark VIeS I/O modules (e.g., IS420TBCH1A) in gas/steam turbine control systems.
• Power Generation: Deployed in utility power plants to terminate discrete inputs for turbine control, generator monitoring, and safety interlocks.
• Oil & Gas Infrastructure: Used in compressor stations and LNG plants to interface field discrete devices with Mark VIeS control systems, supporting remote monitoring and control.
• Industrial Turbine Control: Critical for discrete input termination in industrial gas turbines, enabling overspeed protection, safety interlocks, and auxiliary system monitoring.
• Redundant Control Architectures: Compatible with dual and TMR (Triple Modular Redundancy) Mark VIeS systems, ensuring reliable signal acquisition in fault‑tolerant applications.
• Retrofit Projects: Supports upgrade of legacy Mark VI systems to Mark VIeS, enhancing input signal reliability and system integration.
• Process Automation: Used in manufacturing lines and industrial process control systems requiring high‑density discrete input termination with noise immunity.

Compatibility

• GE Platforms: Mark VIeS Speedtronic Control System, compatible with simplex, dual, and TMR architectures
• IONet Devices: Mark VIeS I/O modules (e.g., IS420TBCH1A), controllers (e.g., IS420UCSCS2A‑B), and operator interfaces
• Power Supplies: 24 V DC industrial power systems (18–32 V DC range) with dual redundant inputs
• Software: GE ToolboxST (v5.0+) for configuration, status monitoring, and diagnostics
• Mounting Hardware: 35 mm DIN‑rail or panel mounting brackets (GE‑approved)
• Field Devices: 24 V DC discrete input devices (limit switches, proximity sensors, pushbuttons)

Installation Notes

1. Mounting: Install on 35 mm DIN‑rail using GE‑approved bracket; ensure 20 mm clearance around the board for airflow and cable management.
2. Power Connection: Connect dual 24 V DC power inputs (18–32 V DC) to redundant power supplies; verify polarity to avoid component damage.
3. Terminal Wiring: Use TB1 and TB2 for field wiring; each terminal block accommodates 24 discrete input signals with secure screw terminals.
4. Signal Protection: Ensure field devices are rated for 24 V DC ±10% to match input voltage requirements.
5. Grounding: Connect the board’s ground terminal to the system ground bus for noise immunity and safety.
6. LED Verification: Confirm per‑channel LEDs are active for valid input signals; troubleshoot open/short circuits using LED status indicators.
7. Environmental Protection: Install in an IP54‑rated enclosure to complement conformal coating and protect against dust, moisture, and chemical exposure.
8. Post‑Installation Testing: Validate input signal integrity and redundancy using ToolboxST before system commissioning.

Key Advantages

• 32 Isolated Input Channels: High‑density termination for discrete input signals with individual channel protection.
• Surge Suppression & Noise Filtering: Ensures accurate signal acquisition in electrically noisy industrial environments.
• Dual Redundant Power: Redundant 24 V DC inputs maximize system availability in critical applications.
• Mark VIeS Compatibility: Seamless integration with Mark VIeS I/O modules and controllers for unified system operation.
• Conformal Coating: Extends module lifespan by protecting against harsh industrial environments.
• LED Diagnostics: Per‑channel status LEDs enable rapid troubleshooting and minimize downtime.
• DIN‑Rail Mounting: Simplifies installation in space‑constrained industrial cabinets.