Crouse-Hinds series MTL 910x FISCO power supply systems provide an intrinsically safe field network for Foundation™ fieldbus systems in hazardous areas. Variants are available for integration into proprietary fieldbus control systems. The output of the power supply modules complies with the Fieldbus Intrinsically Safe Concept (FISCO) model, in accordance with IEC standard 60079-27. The key advantages of FISCO over earlier ‘Entity’ model installations to FF-816 are higher available field current and reduced safety documentation, while retaining the ability to conduct maintenance while energized and without "gas clearance".
The 910x systems build on MTL 912x-IS range of power supplies, which have become established as the industry standard solution for FISCO networks. The 910x systems now achieve higher levels of overall system availability by providing redundancy of the power modules.
Certification is compatible with:
Environmental ratings:
| Part Number | Description | Hazardous Area Certifications * |
| 9101-22-PC | 4-segment redundant FISCO power system IIB for use with Invensys Foxboro DCS control systems - spring clamp terminal | ATEX & IECEx Approved |
| 9107-22-PC | 4-segment, redundant FISCO power system IIB - spring clamp terminal | ATEX & IECEx Approved |
| 9108-22-PC | 4-segment redundant FISCO power system IIB for use with Yokogawa control systems - spring clamp terminal | ATEX & IECEx Approved |
| 9109-22-PC | 4-segment, redundant FISCO power system IIB for use with systems requiring host power - spring clamp terminal | ATEX & IECEx Approved |
| 9101-22-PS | 4-segment redundant FISCO power system IIB for use with Invensys Foxboro DCS control systems - screw terminal | ATEX & IECEx Approved |
| 9107-22-PS | 4-segment, redundant FISCO power system IIB - screw terminal | ATEX & IECEx Approved |
| 9108-22-PS | 4-segment redundant FISCO power system IIB for use with Yokogawa control systems - screw terminal | ATEX & IECEx Approved |
| 9109-22-PS | 4-segment, redundant FISCO power system IIB for use with systems requiring host power - screw terminal | ATEX & IECEx Approved |
| Spares & Accessories | ||
| Part Number | Description | |
| 9122-IS-CM | FISCO power supply module | |
| 9129-IS | Supply arbitration module | |
| 9127-BLK | Alarm blanking module (To defeat carrier alarm if power supplies and supply arbitration modules are not fitted. Two required per segment) | |
| 910x-CA-Px | 4-segment, redundant FISCO power system carrier | |
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