GE IS220PAICH2A | Mark VIe Analog I/O Module 336A4940CSP11

• Brand: GE
• Full Model Number: IS220PAICH2A
• OEM Part Number: 336A4940CSP11
• System: GE Mark VIe
• Lifecycle Status: Legacy / lifecycle status to be verified against the installed system
• Core Function: PAIC analog I/O pack for Mark VIe control systems
• Analog Inputs: 10 channels
• Analog Outputs: 2 channels; Output 1 supports optional 0–200 mA capability
• Input Ranges: Configurable voltage/current inputs including ±5 V, ±10 V, 0–5 V, 0–10 V and 4–20 mA on applicable channels
• Network Interface: 2 × RJ-45 Ethernet
• Power: 28 VDC
• Stock & Condition: Quote-confirmed stock; New Original / New Surplus / Tested Refurbished condition confirmed by lot
• Shipping: Emergency dispatch subject to stock verification and order cutoff

The available technical references identify IS220PAICH2A / 336A4940CSP11 as a Mark VIe PAIC analog I/O pack with ten analog inputs and two analog outputs. The module interfaces with the terminal board through a DC-37 connector and uses Ethernet communication with the controller.

Obsolescence & Supply Chain Deep Dive

A failed PAIC pack can become a procurement problem when the installed Mark VIe system is already tied to an established terminal-board and control configuration. The GE IS220PAICH2A 336A4940CSP11 is not simply a generic analog module; it is an I/O pack intended for the Mark VIe architecture and connects directly to the applicable terminal board. Its ten analog inputs and two analog outputs make it relevant where the existing control logic depends on this specific channel arrangement.

For a single failed I/O pack, sourcing the correct replacement can avoid the engineering cost and extended outage associated with replacing a larger control-system assembly. The TCO calculation should include engineering labor, shutdown exposure, software reconfiguration, panel modification, commissioning, and spare inventory—not only the purchase price. If the existing terminal board, wiring, controller configuration, and firmware environment remain suitable, replacing the failed PAIC pack can require substantially less project work than migrating an entire I/O architecture. (For factory-new legacy units, lead time can vary considerably; verified surplus inventory may reduce procurement delay.) GE’s Mark VIe documentation also identifies PAIC modules as distributed I/O equipment within the control system.

GE IS220PAICH2A

Compatibility & Replacement Matrix

For an exact IS220PAICH2A replacement, the mechanical and electrical interface should be treated as a direct replacement only when the installed terminal-board configuration and system revision match. The pack uses a DC-37 connection to the terminal board, while controller communication is handled through Ethernet.

Field Traps — Watch Out

• Terminal-board matching: Confirm the existing terminal board is an approved match for the installed PAIC configuration. Do not substitute another I/O pack solely because the connector appears physically similar.
• Firmware/configuration mismatch: Record the existing I/O pack revision and controller configuration before removal. A hardware replacement can still require configuration verification or firmware work before the controller recognizes the new pack correctly.
• Output requirement: PAICH2 provides two analog outputs, with additional hardware supporting up to 0–200 mA capability on the first analog output. Replacing it with a different PAIC variant without checking the output requirement can remove a required field function.

Quality Assurance & Testing SOP

Each available unit should pass a documented inspection sequence before shipment. The procedure should distinguish cosmetic inspection from electrical verification and should record the model, part number, serial number, revision and test result.

• OEM identification inspection: Verify GE markings, model designation, 336A4940CSP11 part number, labels, connectors and manufacturing identifiers against the expected configuration.
• Anti-counterfeit visual inspection: Check PCB construction, label quality, connector condition, fasteners, markings and signs of unauthorized component replacement.
• Physical inspection: Examine the enclosure, DC-37 interface, RJ-45 connectors, power connector and mounting points for damage or deformation.
• Power-on self-test: Apply the specified DC supply and monitor the front-panel status indicators for expected startup behavior, including ERR/RUN indications where applicable.
• Communication test: Verify Ethernet interface initialization and confirm that the unit can establish the expected I/O communication path under the available test environment.
• I/O functional test: Test applicable analog input channels using controlled voltage/current signals and verify measured values against the test reference.
• Output test: Exercise both analog outputs within the supported test range; where the unit includes the PAICH2 high-current hardware, verify the applicable Output 1 capability.
• I/O load testing: Apply representative electrical loads to applicable output channels and monitor stability, current response and abnormal alarms.
• Configuration record: Photograph the identification label and record model, serial number, revision and test results before packing.
• Final packing inspection: Use ESD protection and protective packaging suitable for electronic control equipment.

Actual test results should be supplied from the specific physical unit being shipped rather than represented as generic model-level test data.

Procurement & Lifecycle FAQ

Is the genuinely in stock, and what is the cutoff for emergency shipping?

Stock should be confirmed against the physical inventory lot before the PO is released. For emergency requirements, provide the required quantity, destination and desired dispatch time so the available lot and same-day shipping cutoff can be checked. Do not treat a website availability indicator as confirmation of a specific serial-numbered unit.

How do you verify the condition and authenticity of an obsolete or surplus ?

The procurement file should include photographs of the actual unit, model and part-number verification, serial/revision information where available, physical inspection records and applicable electrical test results. New Original, New Surplus and Tested Refurbished should be identified separately on the quotation and commercial documentation.

Are there firmware compatibility issues engineers should check before issuing the PO?

Yes. The engineering team should record the existing I/O pack revision, controller configuration, terminal-board model and applicable Mark VIe software/firmware environment. An exact model-number match substantially reduces hardware substitution risk, but it does not eliminate the need for configuration verification before commissioning.

Can the replace another Mark VIe analog I/O pack?

Not automatically. Channel count, analog ranges, output requirements, terminal-board compatibility and system configuration must all be checked. The specifically provides ten analog inputs and two analog outputs, so another PAIC variant should not be approved as an equivalent solely from its product-family designation.

What warranty and return terms should be included in the purchase order?

Specify the exact condition, tested configuration, warranty duration, DOA procedure, return authorization process and evidence required for a failure claim before payment. For a critical spare, the PO should also identify the supplied model, 336A4940CSP11 part number, serial number where applicable, and agreed acceptance criteria.