Configured for deterministic Ethernet link handling in Mark VIe control networks, the GE IS420ESWAH2A (IS420ESWAH2A Industrial Ethernet Switch) provides direct physical layer switching for copper and fiber interfaces used in turbine control I/O distribution. The unit manages unmanaged 10/100Base‑TX and 100Base‑FX media, executes duplex negotiation, and presents port‑level link indicators for real‑time Mark VIe IONet segments.
Hardware Specifications
Parameter
Specification
Model
IS420ESWAH2A
Brand
General Electric
Origin
Not specified
Weight
1 lb 2 oz
Dimensions
H 5.4 in × W 3.70 in × D 2.20 in
Operating Temp
-40 to 70 deg C
Power Consumption
Not specified
Copper Ports
8 × 10/100Base‑TX
Fiber Ports
2 × 100Base‑FX, LC‑type
Compliance
G3 environmental class
Manual Reference
GEI‑100869A
Safety Rating
Non‑interfering
Backplane Bus Communication Velocity Licenses
As a GE Mark VIe network component, the switch aligns with deterministic IONet timing constraints. Its unmanaged architecture supports:
EtherNet/IP timing windows — predictable link negotiation supporting CIP traffic.
I/O density scaling — consistent propagation delay across large node counts.
Firmware flash compatibility — no firmware dependency due to unmanaged switching fabric.
Frequently Asked Questions (FAQ)
Q: Can the IS420ESWAH2A be hot‑swapped? A: Mechanical replacement is possible on an energized panel, but copper and fiber terminations must be isolated to prevent transient link drops.
Q: What is the negotiation delay for copper ports? A: Standard 10/100Base‑TX auto‑negotiation applies. Link LEDs indicate completion; no GE‑specific timing extensions exist.
Q: How are redundant power inputs handled? A: Internal circuitry prevents reverse current flow, supporting continuity without implementing full redundancy logic.
Field Installation Guidelines
Maintain copper cable shielding continuity; bond drain wire at one end only.
Clean LC fiber connectors before insertion; avoid tight bend radii on multimode fiber.
DIN‑rail or panel mounting is supported; use clip 259B2451BVP1 for long‑edge parallel rail mounting.
Provide airflow clearance to maintain thermal stability across the -40 to 70 deg C range.
RJ‑45 connectors are rated for ~200 insertion cycles; avoid repeated re‑termination.
Route fiber and copper lines separately to reduce electromagnetic coupling.
