Product Overview
IS420UCSBH4A is a UCSB controller module identified for Mark VIe and Mark VIeS controller applications. It is part of the controller group used within the Mark VIe control-system architecture.
The model is listed in the GE Mark VIe and Mark VIeS component declaration alongside other UCSB controller variants. Its installation and substitution must be evaluated within the installed controller architecture, including the specific application, software, power connection, and redundancy arrangement.
Technical Data
| Technical item | IS420UCSBH4A |
|---|---|
| Brand | GE |
| Product type | UCSB controller module |
| Country / region | United States |
| System family | Mark VIe / Mark VIeS |
| Controller category | Mark VIe controller group |
| Hazardous-location declaration | Listed in the Mark VIe and Mark VIeS components declaration |
| Ambient range in declaration | −30 to +65 °C |
| Declared protection marking | Ex nA [ic] IIC T4 Gc, as listed for the controller group |
Operating Environment
For the declared Mark VIe/VIeS controller group, the component declaration lists an ambient operating range of −30 to +65 °C. Use this as one component condition only: enclosure cooling, supply quality, area classification and the complete installed system remain part of the site assessment.
Before service, verify the panel environmental record and controller location. A controller replacement cannot be used to infer a new hazardous-location or enclosure approval, so preserve the installed hardware configuration and use the applicable system documentation for the complete compliance decision.
Compatibility
The controller must retain the documented Mark VIe or Mark VIeS architecture, including exact catalog number, hardware revision, controller role, connected interfaces and redundancy membership. These fields are as important as physical fit because the module participates in a configured control system.
For a redundant set, record the peer relationship and network/interface connections before removal. After installation, confirm the system recognizes the intended controller role and that the restored hardware/software configuration matches the original design before operational commissioning.
Product FAQ
What ambient range should be assessed for IS420UCSBH4A?
Use the declared −30 to +65 °C component range together with the actual enclosure and cooling conditions.
Why is IS420UCSBH4A not a stand-alone area-classification approval?
The hazardous-location decision depends on the complete installed Mark VIe or VIeS system.
What controller record is needed before an IS420UCSBH4A exchange?
Capture catalog number, hardware revision, controller role, interfaces and redundancy membership.
How should an IS420UCSBH4A redundant relationship be protected during service?
Record the peer and all documented network/interface paths before removal.
When should IS420UCSBH4A enclosure conditions be investigated?
When temperature, cooling, supply quality or location differs from the approved panel design.
What confirms an IS420UCSBH4A replacement has the intended role?
The documented system recognizes the correct hardware/software controller role after restoration.
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