Eaton MTL 9122-IS-PS Foundation Fieldbus Intrinsically Safe Isolated Relay Power Supply

Product Description

Eaton MTL 9122-IS-PS is a FISCO Foundation Fieldbus intrinsically safe repeater power supply of Eaton MTL range, compliant with IEC 60079-27 FISCO specification. It provides galvanic isolation, signal regeneration and IS power feed from safe area / Zone 2 to Foundation Fieldbus segments in Zone 1 hazardous locations. Rated for Gas Group IIB with high output current, it supports more field instruments per bus segment. Live maintenance is permitted while the bus remains energized. DIN rail mounted, it is a mainstream solution for FF fieldbus systems in petrochemical and oil & gas hazardous applications.

Specifications

• Part Number: 9122-IS-PS
• Manufacturer: Eaton MTL
• Bus Protocol: Foundation Fieldbus (FF)
• FISCO Standard: IEC 60079-27, Ex marking [Ex ib Gb] IIB
• Input Supply: 19.2 ~ 30 VDC (host side fieldbus power)
• IS-side Output Current: Max 256 mA (IIB)
• Galvanic Isolation: 250 V AC isolation between host and field side
• Termination: Switchable terminator on host side, fixed terminator on IS side
• Mounting: DIN rail
• Operating Temperature: -40℃ ~ +70℃
• Ingress Protection: IP20 (cabinet installation)
• Status Indication: LED for power and bus health
• Installation Zone: Safe area / Zone 2; powers IS devices in Zone 0 / Zone 1

Application

1. Intrinsically safe power & isolation for Foundation Fieldbus transmitters in oil, gas and refinery plants
2. Powering FF pressure, differential pressure, temperature and level instruments located in Zone 1 hazardous area
3. FISCO fieldbus network construction for turbocompressor trains and chemical process units
4. Fieldbus signal repeating and galvanic isolation between DCS and hazardous field circuits
5. Live hot-work maintenance: instruments can be connected / removed on energized bus without gas clearance

Series Part Numbers (MTL 912X FISCO IS Fieldbus Power Family)

• 9121-IS-PS (IIC group, 120mA max)
• 9122-IS-PS (IIB group, 256mA max, this item)
• 9121-IS-CM (plug-in card version)
• 9122-IS-CM (plug-in card version)
• 9129-IS (supply arbitration module for redundancy)
• 9101-CA-PS (4-segment redundant carrier assembly)