GE IS220PSCAH1A 336A4940CSP9 | Serial Communication I/O Pack

Description

• Model & Brand: GE General Electric IS220PSCAH1A
• Additional Part Number: 336A4940CSP9
• Series: Mark VIe / Mark VIeS
• Functional Designation: PSCA
• Product Type: Serial Communication I/O Pack
• Physical Dimensions: Approximately 82.6 × 41.9 × 121.4 mm for the standard module envelope.
• Estimated Shipping Weight: Approximately 0.5–0.8 kg, depending on ESD protection and export packaging.
• What’s in the Box: IS220PSCAH1A communication pack, ESD packaging, mechanical protection, and applicable inspection documentation. The compatible serial terminal board is not assumed to be included.

Product Introduction

The GE IS220PSCAH1A is a Mark VIe Serial Communication I/O Pack that provides the electrical interface between one or two I/O Ethernet networks and a compatible serial communication terminal board. Its communications section contains six independently configurable serial transceiver channels, allowing the same hardware to handle RS-232, RS-422, or RS-485 half-duplex interfaces (the actual protocol and electrical mode must match the connected field device).

This is a communications gateway, not a conventional analog or discrete I/O card. The pack receives power through a three-pin connector, communicates with the Mark VIe I/O network through dual RJ-45 Ethernet connections, and interfaces with the terminal board through a DC-62 connector. One Ethernet port can also support Ethernet Modbus communication in simplex architectures, making network topology a key part of the replacement check.

Core Technical Specifications

GE IS220PSCAH1A 336A4940CSP9

Terminal-board compatibility

GE documentation identifies the following accessory terminal boards for the PSCAH1A hazardous-location configuration:

• IS200SSCAH1A
• IS200SSCAH2A

The module-to-terminal-board relationship is important. Do not substitute a visually similar serial terminal board without confirming the exact GE configuration.

Communication design

Each of the six serial channels can be configured independently. That allows one PSCA installation to serve devices with different electrical interfaces, provided the system configuration and physical wiring support those modes.

For RS-485 applications, verify half-duplex topology, termination, biasing, device addressing, and polarity. For RS-232, keep cable length and grounding within the installation design. A communications pack can pass its own diagnostics while a field network remains unavailable because of wiring or protocol configuration.

Global Compliance & Industry Certifications

The IS220PSCAH1A has documented hazardous-location usage when paired with the specified GE terminal boards. GE’s Mark VIe equipment documentation identifies IS220PSCAH1A or IS220PSCAH1B with IS200SSCAH1A or IS200SSCAH2A as approved combinations for hazardous locations.

That distinction matters. Certification is tied to the defined I/O-pack plus accessory terminal-board configuration and installation conditions; it should not be interpreted as unlimited standalone certification for an unconfigured PCB.

For compliance-controlled procurement:

• CE: Verify the applicable Mark VIe system declaration and hardware revision.
• UL/cUL: Confirm against the complete GE equipment configuration.
• ATEX: Verify the exact hazardous-location configuration and applicable certificate.
• IECEx: Do not infer coverage without checking the specific certified configuration and certificate.
• Marine / DNV-type approvals: Not assumed for the standalone PSCAH1A.
• Country of Origin: Establish from actual manufacturing documentation.
• HS classification: Confirm the final tariff heading with the importing-country customs broker.

Verify specific lot certifications with OEM.

For regulated assets, retain the complete identification, hardware revision, serial number, compatible terminal-board identity, COO documentation, and applicable certification records.

Long-Term Storage & Asset Preservation Guide

Keep the PSCAH1A in an ESD shielding bag until installation. Protect the RJ-45 connectors, DC-62 interface, and serial-board connection surfaces from dust and physical damage.

Use clean, dry storage without condensation. A practical industrial spare-parts target is below approximately 60% RH, with stable temperature and no corrosive atmosphere.

During periodic inventory inspection, examine the enclosure, connectors, board coating, mounting points, and identification labels. Avoid unnecessary power cycling of a stored communication module merely for inventory verification; perform controlled functional testing according to the site’s maintenance program.

Record both the GE catalog number and the 336A4940CSP9 identifier in the asset record. Revision information should also be retained because later PSCA variants are not automatically equivalent to the H1A configuration.

Physical Installation Prerequisites

Install the only with the compatible Mark VIe serial communication terminal board. The documented H1A hazardous-location combinations use IS200SSCAH1A or IS200SSCAH2A.

Verify the DC supply before installation. The PSCAH1A is specified for 27.4–28.6 VDC, with 28.0 VDC nominal. Do not assume a generic 24 VDC source is acceptable simply because other Mark VIe I/O packs use different supply ranges.

The six serial channels require careful interface assignment. Confirm RS-232 versus RS-422 versus RS-485 mode, field-device pinout, cable shielding, signal polarity, termination, baud rate, parity, station address, and protocol configuration before energizing the network.

For Ethernet Modbus applications, verify that the intended architecture is compatible with the PSCAH1A’s documented Ethernet Modbus operating mode. Network redundancy assumptions should not be made merely because two RJ-45 ports are physically present.

Do not remove or install the pack under power unless the applicable GE documentation and plant procedure explicitly authorize live replacement.

Buyer’s FAQ — Logistics & Compliance

Q: What HS tariff code applies to 336A4940CSP9?
A: This is an industrial serial communication I/O pack, and the final HS classification depends on the importing country’s tariff schedule and customs interpretation. Use a broker-confirmed code rather than treating a supplier listing as universally authoritative.

Q: How should Country of Origin be established?
A: COO should come from manufacturing or traceability documentation for the actual unit or lot. Seller location and shipping origin do not establish manufacturing origin.

Q: Does the arrive with the latest firmware pre-loaded?
A: Do not assume it. The pack contains the processor and communications hardware, while serial protocol behavior, channel assignments, and Modbus data mapping depend on the Mark VIe application configuration. Verify the installed hardware revision and approved control-system configuration before commissioning.

Q: Is the hot-swappable, and what should be verified before purchase?
A: Do not assume hot replacement. Follow the GE and site-specific power-isolation procedure. Before receiving the spare into critical inventory, verify , 336A4940CSP9, hardware revision, serial number, connector condition, compatible SSCA terminal board, power rating, and the supplier’s incoming functional-test record.