Description
Product Description
The IS220PAICH1B is an Analog I/O pack from General Electric.
It belongs to the Mark VIe series for turbine control systems.
This pack connects one or two I/O Ethernet networks to an analog input terminal board.
It has a processor board shared by all Mark VIe distributed I/O packs.
It also includes an acquisition board just for analog input functions.
You can use it in gas turbines, steam turbines, and industrial controls.
The pack supports auto-reconfiguration for easy replacement.
No manual setup is needed when you swap a pack.
For questions, reach us on WhatsApp:
+86 158 8020 0923
Key Features
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10 analog inputs with flexible ranges
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2 analog outputs at 0-20 mA
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16-bit ADC for good accuracy
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Auto-reconfiguration saves setup time
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Soft-start circuit protects against power surges
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LED indicators for quick status checks
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Works in hazardous locations (ATEX Zone 2)
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Suicide relay for TMR system safety
Technical Specifications
Brand: General Electric
Model: IS220PAICH1B
Series: Mark VIe
Product Type: Analog I/O Pack
Country of Origin: USA
Analog Inputs
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Total inputs: 10 per terminal board
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Inputs 1-8: 5 V, 10 V, or 0-20 mA
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Inputs 9-10: 0-20 mA or ±1 mA
Analog Outputs
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Total outputs: 2
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Output range: 0-20 mA
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Compliance voltage: 18 V
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DAC resolution: 14-bit
Conversion
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ADC resolution: 16-bit
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Scan time: 5 ms (200 Hz)
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Max controller frame rate: 100 Hz
Power
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Typical consumption: 5.3 W
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Worst case: 6.2 W
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Transmitter power: 22.8 VDC
Environmental
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Ambient temperature: -40 to 158°F
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ATEX Zone 2, Group IIC
Physical
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Output connector: DC-37 pin
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Ethernet ports: 2 x RJ45
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Power input: 3-pin
Terminal boards (IS200 series)
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IS200TBAIH1C
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IS200TAIH1A
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IS200TAIH2A
Hardware Hierarchy
IS220PAICH1B – Analog I/O Pack
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Processor Board
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Common to all Mark VIe packs
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Runs self-test at startup
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Loads code from flash memory
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Acquisition Board
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Dedicated to analog I/O
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16-bit ADC
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14-bit DAC for outputs
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Front Panel
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2 x RJ45 Ethernet
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3-pin power input
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LED status lights
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Backplane Connection
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DC-37 pin to terminal board
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Input & Output Details
Inputs 1 to 8 (configurable)
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5 V dc
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10 V dc
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0-20 mA (needs 250Ω resistor on terminal board)
Inputs 9 to 10 (configurable)
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0-20 mA
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±1 mA
Outputs 1 to 2
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0-20 mA
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18 V compliance
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Normally open relay for each output
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Relay = suicide relay in TMR mode
Environmental & Safety Certifications
Temperature range
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-40 to 158°F (ambient)
Hazardous location certs
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ATEX Zone 2, Group IIC
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EN 60079-11:2012
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EN 60079-7:2015
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EN 60079-0:2018
Non-hazardous cert
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UL E207685
Delta method
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Percentage of configured span
Installation Guide
Follow these steps to install the IS220PAICH1B:
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Mount the terminal board (IS200TBAIH1C, TAIH1A, or TAIH2A)
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Plug the PAIC pack directly into the terminal board connector
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Connect two Ethernet cables (or one for simplex)
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Apply 24 or 28 VDC via the 3-pin power connector
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Soft-start circuit handles inrush current automatically
Tip: The pack negotiates Ethernet connection on either port.
Wire size: Use at least 22 AWG for terminal board connections.
Auto-Reconfiguration – How It Works
What it does
Lets you replace a pack without manual setup.
Step by step
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Controller detects a new booting pack
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Auto-reconfiguration must be enabled
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Controller downloads config file to the pack
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Bootload, baseload, firmware, and parameters update
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Pack gets the latest matching config
Result
The new pack works right away. No extra work needed.
Debugging & Maintenance
LED indicators
Show power, Ethernet link, and I/O status.
Alarm 66-67
Individual output current too high relative to total current.
Alarm 82-83
Suicide relay not working. Possible causes:
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Relay command does not match feedback
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Hardware failure
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Relay failure on acquisition board
Solution for alarm 82-83
Replace the I/O pack.
Compressor stall detection
Detection and relay operation within 30 seconds.
Compatibility Information
System compatibility
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GE Mark VIe series
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Works with Versamax for extended I/O
Controller compatibility
Any Mark VIe controller running ControlST.
Terminal board compatibility
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IS200TBAIH1C
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IS200TAIH1A
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IS200TAIH2A
Software
ControlST with auto-reconfiguration enabled.
Packaging & Delivery
Box includes
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1 x IS220PAICH1B Analog I/O pack
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Anti-static bag
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No terminal board or cables
Shipping carriers
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FedEx
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UPS
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DHL
Same-day shipping for orders before 3 PM.
Repair time
3-7 days typically.
Warranty – 12 Months
We give a 12-month warranty on the IS220PAICH1B.
Warranty covers
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Repair or replacement
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Defects in materials or workmanship
Not covered
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Wrong installation
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Overvoltage damage
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Physical damage
Contact us right away if failure happens within 12 months.
Typical Applications
Gas turbine control
Read pressure and temperature via 0-20 mA loops.
Steam turbine monitoring
Use 5 V or 10 V inputs for position sensors.
Compressor anti-surge
Detect stall within 30 seconds. Trigger relays fast.
TMR (Triple Modular Redundant) systems
Suicide relay removes failed outputs automatically.
Hazardous area installations
ATEX Zone 2 certified. Use in gas or dust environments.
Diagnostic Capabilities
Self-test at power-up
Checks processor, memory, and acquisition board.
Board ID verification
Ensures application code, acquisition board, and terminal board match.
Input scaling check
Offset and gain scaling available per channel.
Output current monitoring
Alarm 66-67 warns if output current is too high.
Relay feedback check
Alarm 82-83 indicates suicide relay failure.
Health bits
Each signal has an individual health bit.
FAQ – Professional Questions
What is the minimum DC voltage for IS220PAICH1B to work properly
22.5 VDC is the minimum. Nominal is 24 or 28 VDC.
Can I use this pack with a terminal board other than IS200 series
No. Only use IS200TBAIH1C, IS200TAIH1A, or IS200TAIH2A.
What happens if auto-reconfiguration is disabled
You must manually configure each new pack. We recommend keeping it enabled.
How does the suicide relay work in a TMR system
It opens to remove a failed output. The other two packs then work correctly without interference.
Is this pack compliant for use in European hazardous areas
Yes. It meets ATEX Zone 2, Group IIC standards.
Experience-Based FAQ
We see alarm 82-83 after a power surge. What should we do
Replace the pack. The suicide relay hardware likely failed. Do not try to repair it onsite.
Can we mix IS220PAICH1B with older PAICH1 packs in one system
Yes, but each pack must match its own terminal board. The controller handles them separately.
How do we know if auto-reconfiguration is active
Check the controller settings in ControlST. Look for the auto-reconfig enable flag.
The pack works but one input reads wrong. What is wrong
Check the terminal board resistor for current loops. For voltage inputs, check scaling settings.
Do we need to power down the rack to replace a pack
No. The soft-start circuit allows hot swapping. But follow your site safety rules.
Selection Guide – How to Choose the Right Analog I/O Pack
Choose IS220PAICH1B if
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You need 10 analog inputs and 2 outputs
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Your inputs include 5 V, 10 V, 0-20 mA, or ±1 mA
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You use GE Mark VIe series
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You want ATEX Zone 2 certification
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Auto-reconfiguration is important to you
Choose a different pack if
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You need more than 10 inputs
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You need thermocouple or RTD inputs
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Your system uses Mark V (not VIe)
Need help picking
Contact us on WhatsApp: +86 158 8020 0923
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