GE 8 Channel Analog Output Pack IS220PAOCH1B

High-Precision Current Output for Industrial Control

General Electric designed the IS220PAOCH1B for reliable process control. This Analog Output Module operates within Mark VIe distributed systems. It delivers precise current signals to field devices with excellent accuracy.

Core Technical Specifications

• Manufacturer & Model: General Electric IS220PAOCH1B (Revision B)
• Product Type: Analog Output I/O Module
• Series: Mark VIe Distributed Control System
• Output Channels: Eight independent current outputs
• Output Range: 0-20 mA per channel
• Accuracy: ±0.5% over -30°C to +65°C
• Load Capacity: Up to 900 Ω per output

Output Performance Characteristics

• Eight simplex 0-20 mA current loop outputs
• 18 V compliance voltage for reliable operation
• 16-bit digital-to-analog converter (DAC) precision
• Current feedback monitoring for each channel
• ±0.5% accuracy maintained across temperature range
• External transistor amplifier for current regulation

Configuration & Compatibility

• Simplex Mode: Single pack for non-critical applications
• Dual Mode: Two packs for moderate fault tolerance
• TMR Mode: Three packs for critical safety systems
• Compatible Boards: TBAOH1C and STAO terminal boards
• Not Compatible: DIN-rail mounted DTAO board
• Interface via one or two Ethernet ports per configuration

Hardware Features & Diagnostics

• Built-in temperature sensor for thermal monitoring
• Mechanical normally-open relays per output channel
• LED indicators show relay status and output condition
• Infrared port for local diagnostic communication
• Current measurement via 50Ω resistor on terminal board
• 16-bit ADC provides accurate current feedback

Physical & Environmental Specifications

• Dimensions: 8.26 cm H × 4.19 cm W × 12.1 cm D
• Operating Temperature: -30°C to +65°C ambient
• Extended Range: -40°C to +70°C pack exterior
• Connections: Dual RJ45 Ethernet, three-pin power, DC-37 output
• Manufacturing Origin: United States
• Triple board layout requires ambient temperature consideration

System Integration

• Interfaces with one or two I/O Ethernet networks (IONet)
• Common processor board shared across Mark VIe I/O packs
• Dedicated analog output acquisition board pair
• Direct connection to terminal board via DC-37 connector
• Supports automatic failover in dual and TMR configurations
• Two-out-of-three voting in TMR mode ensures reliability

Product Availability

• Current Status: In stock for immediate shipment
• New and original General Electric component
• Revision B with updated specifications and improvements
• Ships in original factory protective packaging
• Includes all necessary documentation references

Shipping & Delivery

• Fast processing via FedEx, UPS, and DHL services
• Orders typically ship within 24 business hours
• International delivery to most global destinations
• Complete tracking information provided
• Professional packaging ensures component safety

Installation & Configuration

• Consult GE manual GEH-6721D for complete instructions
• Verify terminal board compatibility before installation
• Consider ambient temperature limits for reliable operation
• Ensure minimum load impedance meets application requirements
• Configure for simplex, dual, or TMR mode as needed
• Test all outputs and feedback circuits before commissioning

Application Guidelines

• Critical safety systems: Use TMR configuration with three packs
• Moderate reliability: Dual configuration provides good fault tolerance
• Non-critical processes: Simplex configuration offers cost efficiency
• Monitor internal temperature via built-in sensor
• Utilize current feedback for output verification
• Implement relay status indicators for maintenance diagnostics

Frequently Asked Questions (FAQ)

How many output channels does this module have?

• The IS220PAOCH1B provides eight independent 0-20 mA analog output channels.

What configuration modes are supported?

• It supports simplex (single), dual (two-pack), and TMR (three-pack) configurations for different reliability needs.

What is the output accuracy specification?

• Accuracy is ±0.5% across the operating temperature range of -30°C to +65°C.

Which terminal boards are compatible?

• Compatible with TBAOH1C and STAO terminal boards, but not with DIN-rail mounted DTAO boards.

Does it include output current monitoring?

• Yes, each channel includes current feedback measurement using a 16-bit ADC and 50Ω sensing resistor.

What documentation is available?

• Refer to GE manual GEH-6721D for complete technical specifications and installation guidelines.