PRODUCT INFORMATION
Product Overview
The General Electric IS220PDIOH1A is a Discrete Contact Input/Output Terminal Board for Mark VI / Mark VIe control systems. This discrete I/O pack mounts directly onto compatible terminal boards including TDBS and TDBT. It provides an electrical interface between Ethernet networks and discrete field circuits. The pack accepts up to 24 contact inputs and controls 12 relay outputs. Dual RJ45 Ethernet ports maintain concurrent network communications across distributed control networks.
The assembly contains an Ethernet processor board coupled to a discrete input and output acquisition board. Power input circuitry includes a soft-start circuit to limit current inrush upon power cable connection. Onboard flash memory stores module firmware that verifies hardware identity before initiating signal acquisition. Status light-emitting diodes deliver visual diagnostics for contact input states and relay command circuits. The pack also features an infrared port for local serial diagnostic communications.
TECHNICAL DATA
Technical Specifications
| Parameter | Specification |
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| Ac voltage rejection | 60 V RMS |
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| Input Filter | Hardware filter, 4 ms |
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| Input Signal Logic | Active High / Active Low |
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| Input Voltage Range | 5V DC / 24V DC |
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| Input isolation in pack | 1500 V |
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| Isolation | Optical or Galvanic Isolation |
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| Mounting Type | DIN Rail |
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| Number of input channels | 24 |
|---|
| Number of relay command channels | 12 |
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| Operating Temperature | -40°C to +70°C |
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| Output Voltage Range | 5V DC – 250V AC |
|---|
| Response Time | <5ms |
|---|
| Size | 15.875 cm high x 10.795 cm wide |
|---|
TECHNICAL INFORMATION
Features
- Accepts 24 discrete contact input channels with variable threshold comparator circuits.
- Controls 12 discrete relay command channels with integrated load current sensing.
- Provides optical or galvanic isolation rated up to 1500 V in the pack.
- Features dual auto-negotiating 10/100 MB/s Ethernet ports running active concurrent connections.
- Includes an input hardware filter with a 4 ms time constant.
- Supplies onboard status light-emitting diodes for local visual channel diagnostics.
TECHNICAL INFORMATION
Applications
- General Electric Mark VIe distributed control systems for turbine automation.
- Simplex discrete input and output configurations utilizing TDBS terminal boards.
- Triple Modular Redundant discrete control architectures paired with TDBT terminal boards.
TECHNICAL INFORMATION
Connections / Interfaces
- Two RJ45 Ethernet ports provide dual network communication lines.
- A DC-62 pin connector connects directly to the mating terminal board.
- A three-pin power connector supplies local DC input voltage.
- An infrared serial port facilitates local diagnostic communications.
TECHNICAL INFORMATION
Installation Guidelines
- Plug the pack directly into the mating DC-62 connector on the terminal board.
- Secure the mechanical attachment using threaded studs adjacent to the Ethernet ports.
- Align the mounting bracket so no right-angle force affects the DC-62 connector.
- Connect ENET1 to the network path assigned to the R controller.
- Insert the power plug while energized because internal soft-start circuits control inrush current.
TECHNICAL INFORMATION
Configuration Guidelines
- The module processor acquires its IP address automatically through standard DHCP requests.
- Internal application code validates terminal board ID records before activating acquisition functions.
- Both Ethernet channels remain actively engaged without requiring primary failover switching.
- Input signal logic supports configuration for active high or active low operation.
TECHNICAL INFORMATION
Compatibility
- Connects to TDBS terminal boards for simplex discrete input and output configurations.
- Mounts onto TDBT terminal boards in sets of three for Triple Modular Redundant systems.
- Operates within General Electric Mark VIe distributed control architectures.
COMPATIBILITY
Compatibility & Replacement
COMPATIBLE MODELSConnects to TDBS terminal boards for simplex discrete input and output configurations. Mounts onto TDBT terminal boards in sets of three for Triple Modular Redundant systems. Operates within General Electric Mark VIe distributed control architectures.
Verify compatibility against the exact Part Number, revision and manufacturer documentation before ordering.
PART VERIFICATION
Before You Order
Industrial automation parts can share similar model names, suffixes and revisions. Confirm the complete manufacturer Part Number before purchase.
01Check Part NumberMatch the complete ordering code on the existing unit.
02Confirm RevisionCheck suffix, hardware or firmware when applicable.
03Send a Label PhotoWe can review a clear label photo when identification is uncertain.
ORDERING PROCESS
From RFQ to Dispatch
1Submit Part Number2Verify Product Identity3Confirm Stock & Condition4Issue Quotation5Dispatch & Tracking
PRODUCT FAQ
Frequently Asked Questions
What is the primary function of the IS220PDIOH1A?
The IS220PDIOH1A interfaces 24 contact inputs and 12 relay outputs to Mark VIe Ethernet networks.
Can the IS220PDIOH1A be plugged in while powered?
Yes, the module has internal soft-start circuitry that controls current inrush during power application.
Which terminal boards connect with the IS220PDIOH1A pack?
It mounts directly onto TDBS terminal boards for simplex systems and TDBT boards for TMR applications.
How do the dual Ethernet ports operate on the IS220PDIOH1A?
Both Ethernet ports remain active simultaneously to ensure continuous operation without failover delays.
