GE IS200SSCAH1A Mark VIe | New Surplus Stock

Description

Product Introduction

The GE IS200SSCAH1A is the security module for the Mark VIe system—it manages user authentication, access permissions, and security audit logging. If you’ve got a turbine control system that needs to restrict access to critical functions, this module provides the hardware and software framework for access control.

The “SSCA” designation tells you this is a system security and access module. The “H1A” is the base revision. The module has four digital inputs for access control interlocks (key switches, card readers), four digital outputs for access status, and two secure authentication channels. It also has built-in audit logging that records who accessed the system and when. The module communicates with the CPU over the backplane and can enforce access restrictions at the system level.

Key Technical Specifications

Quality Inspection Process (SOP Transparency)

The SSCAH1A is a security module—our 26-point inspection verifies digital I/O and audit logging.

Incoming Verification. OEM packing slip matched to GE’s serial database. We log the serial and photograph the anti-static bag before cutting. The holographic GE label gets a UV check. The PCB edge must read “–SSCAH1A” clearly.

Visual Inspection. Magnifying lamp, full board scan. The security circuits are inspected for rework. The 96-pin backplane connector shows zero wear.

Live Functional Test. Mark VIe test rack with a DC source bank and load bank.

• Digital input test: Apply 24 VDC to each input—verify access control interlocks.
• Digital output test: Command outputs—measure response and voltage under load.
• Authentication test: Verify authentication channels communicate correctly.
• Audit logging test: Generate access events—verify logging and timestamping.
• Isolation test: 2,500 V RMS—no breakdown.
• 24-hour soak.

Electrical Parameters. Insulation resistance: 500 VDC via Megger MIT420, >20 MΩ. Ground continuity: <0.1 Ω.

Firmware Verification. Read the firmware via ToolboxST—verify the checksum.

Final QC & Packaging. The QC report includes digital I/O, authentication, audit logging, isolation test, and a photo.

Field Replacement Pitfalls

The SSCAH1A is a security module—installation mistakes are usually about configuration.

Access Policy—Program It. The module doesn’t enforce access by default. You must program the access policy. One site in Texas installed the module and didn’t configure the policy—anyone could access critical functions.

Audit Logging—Review It. The audit log is only useful if you review it. One site in Ohio had an unauthorized access event—they didn’t know because they never reviewed the log.

Authentication Channels—Secure Communication. The authentication channels use a secure protocol. Don’t bypass them with unsecured connections.

Digital Inputs—Access Control Interlocks. The digital inputs can be used for key switches or card readers. Use them for physical access control.

ESD. Strap up.

New Original vs. Refurbished: Why It Matters

The SSCAH1A has security firmware—refurbishers often can’t verify the authentication channels.

What “New Original (New Surplus)” means. This IS200SSCAH1A came from GE’s factory, never mounted. The security circuits are fresh. We break the seal only for testing.

Refurbished risk in plain terms. A refurbisher may not test the authentication channels. I’ve tested refurbished SSCAH1A units where authentication failed. Failure rate on refurbished security modules runs 4× higher than new.

Real cost of a refurbished failure. Authentication fails—an unauthorized user gains access—makes a dangerous change—turbine trips—lost generation—30,000. The refurbished module saved you 700. The failure cost you 42× that.

What we provide as proof. For every IS200SSCAH1A we ship: a photo of the OEM packing slip, serial traceability to GE’s records, a full test report that includes digital I/O, authentication, audit logging, isolation test, and a sealed anti-static bag.

Pricing context. Our price sits 30–50% above refurbished, 20–30% below GE’s current list price. The delta covers our sourcing, our security testing, and a 12-month warranty.

Performance Benchmarks & Test Results

Data from our Mark VIe test rack (ambient 45 °C, supply +5.0 VDC, ToolboxST v5.3, DC source, load bank, hi-pot tester).

• Digital input response: 2.0 ms—under 2.2 ms.
• Digital output response: 2.1 ms—under 2.2 ms.
• Authentication: Passed.
• Audit logging: 100 events logged—timestamps accurate.
• Isolation test: 2,500 V RMS—no breakdown. Insulation resistance >100 MΩ.
• Thermal performance: At 60 °C ambient, the module ran at 50 °C—under the 85 °C rating.
• Reliability estimate: MIL-HDBK-217F gives a demonstrated MTBF of 70,000 hours at 40 °C—that’s 8.0 years.

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