Product Overview
When gas turbine control systems demand precise analog output signals, the GE IS220PAOCH1A delivers reliable performance. As part of the Mark VIe series, this Analog Output Module provides an electrical interface between one or two I/O Ethernet networks and an analog output terminal board. The IS220PAOCH1A supports up to eight simplex 0-20 mA current loop outputs, making it essential for accurate control in power generation and industrial applications.
Technical Specifications
The GE IS220PAOCH1A is engineered for high accuracy and durability. Key specifications include:
| Specification |
Value |
| Part Number |
IS220PAOCH1A |
| Manufacturer |
General Electric |
| Series |
Mark VIe |
| Product Type |
Analog Output Module |
| Number of Channels |
Eight current output channels |
| Analog Outputs |
0-20 mA, up to 900 Ω |
| Accuracy |
±0.5% over -30 to 65°C (-22 to 149°F) temperature |
| Size |
8.26 cm H x 4.19 cm W x 12.1 cm D (3.25 in x 1.65 in x 4.78 in) |
These specifications ensure the IS220PAOCH1A provides stable, accurate output signals across a wide temperature range, critical for demanding industrial environments.
Industry Applications
The GE IS220PAOCH1A is designed for gas turbine control management systems. It excels in applications requiring precise current loop outputs, such as:
- Gas turbine fuel control valves
- Generator excitation control
- Industrial process automation
With its high accuracy and reliability, the IS220PAOCH1A minimizes downtime and ensures consistent operation, offering long-term cost savings through reduced maintenance and improved process efficiency.
Installation & Setup Guidance
Proper installation of the IS220PAOCH1A ensures optimal performance. Follow these steps:
- Mount the selected terminal board (TBAOH1C or STAOH1A/H2A) firmly.
- Connect the PAOC I/O pack directly to the terminal board connector.
- Secure the pack using threaded studs next to the Ethernet ports, sliding them into the mounting bracket.
- Position the bracket to avoid right-angle forces on the DC-37 pin connector.
- Connect one or two Ethernet cables; for dual connections, link ENET1 to the network connected to the R controller.
- Connect power to the side connector; the soft-start feature manages inrush current, so power-off is not required.
- If needed, configure the I/O pack using ToolboxST* software (press F1 for help).
Maintenance & Reliability
The IS220PAOCH1A performs self-diagnostics including power-up tests, internal power supply checks, hardware set verification, and analog output circuit validation. Regular inspection of field wiring and connectors helps maintain signal integrity. The module's robust design and built-in diagnostics extend service life, reducing total cost of ownership.
Compatibility & Integration
The GE IS220PAOCH1A integrates with Mark VIe systems and is compatible with BPPB processor boards (within the PAOCH1A) and BPPC boards (in PAOCH1B, supported by ControlST* V04.06+). Use only TBAOH1C and STAOH1A/H2A terminal boards for optimal performance. Dual RJ-45 Ethernet connectors provide network redundancy.
Selection Guide & Purchasing Advice
Before purchasing, verify your system's terminal board compatibility and processor board requirements. The IS220PAOCH1A is available in stock. For expert guidance and reliable sourcing, choose PLC Source PRO as your trusted supplier for industrial automation parts.
Troubleshooting & Common Issues
If the analog output exceeds 0-20 mA or feedback is out of range, check the command signal and field wiring. If all active feedbacks are unhealthy despite valid commands, a board failure is likely—replace the terminal board and I/O pack. Regular diagnostics help prevent such issues.