Description
Product Introduction
The IS220PAICH1A comes from General Electric (USA).
This Analog I/O Pack belongs to the Mark VI Speedtronic turbine control series.
With 12 channels total, the unit provides 10 inputs and 2 outputs.
The module supports both Simplex and Triple Modular Redundant (TMR) systems.
Notably, Mark VI handles up to nine 21-slot VME racks in just 40 milliseconds.
Software Implemented Fault Tolerance (SIFT) votes inputs for better reliability.
Direct sensor communication removes extra interposing instruments.
As a result, this design lowers spare parts and reduces long-term costs.
Technical Specifications
Brand: General Electric
Part No.: IS220PAICH1A
Series: Mark VI Speedtronic Turbine Controls
Product Type: Analog Input Output Module
Channels: 12 total
Inputs: 10 analog inputs
Outputs: 2 analog outputs (0-20mA current loop)
Revision: Rev C
Weight: 1 lb 3 oz
Shipping Dimensions: 12x12x12 inches
Made In: USA
Power Supply: 28 VDC nominal (range: 27.4 to 28.6 VDC)
Current Draw: 0.49 A dc
Input Voltage Range (Ch 1-8): 10 V dc max, 20 mA dc max
Input Voltage Range (Ch 9-10): 5 V dc max, 20 mA dc max
Output Voltage Max: 16.3 V dc, 20 mA dc max
Analog Transmitter Max: 25.2 V dc, 21 mA dc max
Warranty: 12 months
Measurement & Performance Data
Input Range: 0 to 10V dc (channels 1-8), 0 to 5V dc (channels 9-10)
Output Range: 0 to 20 mA current loop
Frequency Response: Suitable for turbine control loops (50/60 Hz)
Resolution: High-resolution analog conversion for precise control
Temperature Range: -22 to 149°F (-30 to 65°C)
Environmental Tolerance: Withstands vibration and humidity in turbine halls
Noise Immunity: Built-in filtering for industrial electrical noise
Diagnostic Capabilities
Four front panel LED indicators show status at a glance
Direct sensor interrogation enables optimal fault detection
Software voting (SIFT) identifies faulty inputs automatically
Meanwhile, diagnostics evaluate device and system performance continuously
Typical Applications
Gas turbine control systems with Mark VI
Steam turbine management in power plants
Wind turbine automated drives requiring analog I/O
Triple Modular Redundant (TMR) architectures
Hazardous location installations (Class I Div 2)
Installation Guide
Mount the unit in VME racks (13-slot or 21-slot models)
Place the PAIC pack in TMR system configurations for best redundancy
For wiring, connect compatible terminal boards: IS200STAIH1A, IS200STAIH2A, or IS20TBAIH1C
Use the bottom I/O port for all field wiring connections
After mounting, apply 28 VDC nominal power to the pack
Finally, verify voltage stays between 27.4 and 28.6 VDC before startup
Commissioning & Maintenance Convenience
Front LEDs allow quick power and status checks without tools
No special tools needed for module replacement
Direct device communication reduces interposing hardware significantly
Consequently, lower spare parts inventory saves storage space
A simple swap of the A-rated revision works without system redesign
Compatibility
Fully compatible with Mark VI Speedtronic systems
Works with IS200STAIH1A terminal board
Also works with IS200STAIH2A terminal board
Additionally, compatible with IS20TBAIH1C terminal board
Supports Simplex and TMR control architectures
Replaces IS220PAICH1 parent model with improved features
Certification Information
Class I, Div 2, Groups A, B, C, D (ANSI/ISA 12.12.01-2015)
Class I, Zone 2, Group IIC for hazardous locations
ATEX Zone 2, Group IIC certified as well
UL E207865 for non-hazardous locations
UL DEMKO 12 ATEX 1114875X for international use
Conformal coating protects the PCB in harsh environments
Package Contents
One IS220PAICH1A Analog I/O Pack module
No terminal boards included
No cables or mounting hardware provided
Warranty
12-month warranty against manufacturing defects.
Covers repair or replacement only.
Does not cover misuse, field wiring errors, or external damage.
Shipping Methods
We ship via FedEx, UPS, or DHL.
Tracking number provided after dispatch.
Typical delivery: 3–7 business days.
Frequently Asked Questions (FAQ)
1. What does IS220PAICH1A do in a Mark VI system?
It converts analog field signals for turbine control and monitoring.
2. How many inputs and outputs does this module have?
It has 10 analog inputs and 2 analog outputs.
3. What voltage does this pack need to operate?
It needs 28 VDC nominal, with a range of 27.4 to 28.6 VDC.
4. Can I use this module in a hazardous location?
Yes. It has Class I Div 2, Zone 2, and ATEX certifications.
5. What terminal boards work with IS220PAICH1A?
Use IS200STAIH1A, IS200STAIH2A, or IS20TBAIH1C.
6. Is this module different from IS220PAICH1?
Yes. The “A” suffix means it is the improved A-rated revision.
7. My system shows channel errors on input 5. What should I check?
First check the field wiring voltage. Then verify the terminal board connection. Lastly test with a known good sensor.
8. Can I mix Simplex and TMR modules in one system?
No. Choose one architecture for the entire rack.
9. How do I choose between IS220PAICH1A and other analog packs?
Select this model for 28V systems needing 10 inputs and 2 outputs. Choose other packs for different channel counts or voltages.
10. What is the typical lifespan of this module?
With proper installation and clean power, expect 10+ years of service.
Selection Guide
First, confirm your Mark VI system voltage matches 28 VDC
Next, count your analog input needs – this pack gives 10 inputs
Then, verify output requirements – this pack gives 2 outputs (0-20 mA)
Also, check your terminal board model: STAIH1A, STAIH2A, or TBAIH1C
For small, non-critical turbines, choose Simplex
For high-availability power generation, choose TMR
Finally, for hazardous locations, verify your zone matches certifications above
Contact Information
For inquiries, please contact:
+86 158 8020 0923 (WhatsApp)
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