GE Mark VIe Current Output Module IS220PAOCH1A

Reliable Current Output for Turbine Control Systems

General Electric manufactured the IS220PAOCH1A for precision control applications. This Analog Output Module operates within Mark VIe gas turbine management systems. It delivers accurate current signals to control critical process equipment.

Core Technical Specifications

• Manufacturer & Model: General Electric IS220PAOCH1A
• Product Type: Analog Output Module
• Series: Mark VIe Turbine Control System
• Output Channels: Eight current output channels
• Output Range: 0-20 mA per channel
• Accuracy: ±0.5% (-30°C to +65°C)
• Load Capacity: Up to 900 Ω maximum load

Output Performance & Hardware

• Eight simplex 0-20 mA analog current outputs
• 18 V compliance voltage ensures reliable operation
• 16-bit digital-to-analog converter (DAC) for precision
• External transistor amplifier regulates output current
• Built-in temperature sensor monitors internal conditions
• Mechanical normally-open relay per output channel

Compatibility & Integration

• Processor Board: Contains BPPB processor board
• Software Support: ControlST Software Suite V04.06+
• Terminal Boards: TBAOH1C and STAOH1A/H2A
• Connections: Dual RJ-45 Ethernet, three-pin power input
• Output Connector: DC-37 pin direct terminal board connection
• LED indicators provide visual diagnostic information

Current Feedback & Monitoring

• Current feedback for all eight analog outputs
• 16-bit analog-to-digital converter (ADC) for measurement
• 50Ω resistor on terminal board for current sensing
• Continuous comparison between commanded and actual current
• Validates DAC circuit functionality during operation
• Monitors suicide relay status and feedback indication

Physical Specifications

• Dimensions: 8.26 × 4.19 × 12.1 cm (3.25 × 1.65 × 4.78 in)
• Operating Temperature: -30°C to +65°C (-22°F to +149°F)
• Extended Range: -40°C to +70°C pack exterior
• Country of Origin: United States
• Dense triple board layout requires ambient de-rating
• Minimum output impedance defined by customer load

Self-Diagnostic Features

• Power-up self-test examines processor hardware
• Tests Ethernet ports, RAM, and flash memory integrity
• Continuous monitoring of internal power supply status
• Verifies hardware set matches electronic ID data
• Confirms application code compatibility with hardware
• Validates analog output suicide relay operation

Product Availability

• Current Status: In stock for immediate shipment
• New and original General Electric component
• Ships in original factory protective packaging
• Includes all necessary mounting hardware
• Ready for integration into existing systems

Installation Guidelines

• Securely mount the compatible terminal board first
• Connect the IS220PAOCH1A directly to terminal board connector
• Use threaded studs near Ethernet ports for mechanical fastening
• Position mounting bracket to prevent right-angle forces on DC-37 connector
• Connect one or two Ethernet cables based on system configuration
• Apply power via side connector - soft-start feature manages inrush current

Configuration & Setup

• Configure using ToolboxST* application software
• Access Component Editor help menu by pressing F1
• Set analog output commands within 0-20 mA range
• Verify feedback signals match expected commands
• Test all outputs before placing system into service
• Document configuration settings for future reference

Alarm Diagnostics & Troubleshooting

• Alarm Condition: Analog output exceeding valid range
• Possible Cause: Command outside 0-20 mA range or hardware fault
• Solution: Verify command is within specified range
• Check analog output feedback against expected command
• Inspect field wiring and connectors for issues
• If multiple feedbacks are unhealthy, replace terminal board and I/O pack

Shipping & Delivery

• Fast processing via FedEx, UPS, and DHL carriers
• Orders typically ship within 24 business hours
• International shipping available to most countries
• Complete tracking information provided
• Professional packaging ensures component protection

Frequently Asked Questions (FAQ)

What is the primary application of this module?

• The IS220PAOCH1A provides current outputs for Mark VIe gas turbine control and management systems.

How many output channels are available?

• This module offers eight independent 0-20 mA analog output channels.

What terminal boards are compatible?

• Compatible with TBAOH1C and STAOH1A/H2A analog output terminal boards.

Does it include current feedback monitoring?

• Yes, each output includes current feedback via a 16-bit ADC and 50Ω sensing resistor.

What diagnostic features are included?

• Includes power-up self-tests, continuous power monitoring, hardware verification, and relay status checking.

How is the module physically secured?

• It uses threaded studs near Ethernet ports with a mounting bracket to prevent stress on the DC-37 connector.