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8-segment redundant fieldbus power system for use with yokogawa centum 3000 r3 control system the f880 fieldbus power system is designed to provide redundant power for eight f oundation fieldbus tm h1 segments when used with yokogawa alf111 fieldbus cards. the f880 module carrier has system connectors for direct connection to two redundant pairs of fieldbus cards using yokogawa akb336 cables. power for the fieldbus segments is provided by two F801 power modules operating in a redundant configuration. failure alarms, galvanic isolation, power conditioning and segment termination are incorporated into each F801 module. in simplex applications, a single F801 module may be used. termination of the fieldbus segments is automatically maintained when single or redundant F801 modules are fitted. for extreme reliability , the module carrier has no components and only provides interconnections between the power modules and external connections. it is supported in a rigid metal frame that protects the circuit board from mechanical damage. secure din-rail mounting is provided by integrated fixings. each F801 module monitors the output of the eight fieldbus segments and indicates an alarm by means of a built-in, normally closed relay if any of the segments is shorted or below the minimum output voltage threshold. failure of either of the bulk power input supplies is also annunciated. the alarm contacts are volt-free and galvanically isolated from other circuitry. connections to the alarm relays are made via terminals on the f880-ca carrier. a separate alarm module is not required for this function. led indicators also show the status of each F801 module and the eight individual segments. in normal operation, each segment led is lit, showing that the segment is powered. if a segment is shorted, this led is extinguished, and the module alarm led is lit. a separate physical layer diagnostics module may be installed on the carrier to automatically collect and distribute additional diagnostic information for each of the eight fieldbus segments. the F801 module provides galvanic isolation between the 24v dc input power and the fieldbus segments, as recommended by the iec61158-2 fieldbus standard and the f ieldbus foundation ? ff-831 validation test for power conditioners.there is also galvanic isolation between the fieldbus segments, thereby preventing multiple segment failures due to ground faults on more than one segment. each segment has its own fieldbus power conditioner and current limitation. redundant 24v dc (nom.) input power is connected to the f880 carrier using two-part pluggable connectors. field wiring connections are available with either pluggable screw terminals (f880- ps) or pluggable spring clamp terminals (f880-pc). f oundation fieldbus ? is a trademark of fieldbus foundation ? , austin, texas. ? ? low power dissipation ? ? passive module carrier ? ? on-line diagnostics option ? ? redundant power & conditioning ? ? integrated redundant fieldbus power for alf111 f oundation fieldbus ? ? cards ? ? high-density, compact design ? ? fully isolated f880 europe (emea) tel: +44 (0)1582 723633 fax: +44 (0)1582 422283 americas tel: +1 603 926 0090 fax: +1 603 926 1899 asia pacific tel: +65 487 7887 fax: +65 487 7997 e-mail: enquiry@mtl-inst.com web site: www.mtl-inst.com dec 2005
europe (emea) tel: +44 (0)1582 723633 fax: +44 (0)1582 422283 americas tel: +1 603 926 0090 fax: +1 603 926 1899 asia pacific tel: +65 487 7887 fax: +65 487 7997 e-mail: enquiry@mtl-inst.com web site: www.mtl-inst.com feb 2006 specification location of equipment see approvals output number of channels eight voltage 21.5v dc minimum 24.0v dc maximum design current 0 to 350ma per segment current limit > 370ma minimum load no load isolation fieldbus to power supply: 250v ac rms withstand fieldbus to fieldbus: 250v ac rms withstand input input voltage 19.2 - 30.0v dc, reverse polarity protected current consumption (8 segments each with 350ma output load, redundant operation) 3.5a @ 24v dc input, max. power dissipation (8 segments each with 350ma output load, redundant operation) 2.75w / segment, typ. alarms alarm contact rating 1 a max. @ 30v dc max. alarm contact status normally closed alarm threshold segment output: 19v dc mechanical mounting method integrated fixings for 'top hat' din rail, 35mm x 7.5mm or 35mm x 15mm to en50022 electrical connections host connectors host 1a, host 1b, host 2a, host 2b via akb336 cables to alf111 modules field, power & alarm terminals pluggable rising cage-clamp screw terminals ( - ps ) conductor size: 0.14 to 2.5 mm 2 pluggable spring-clamp screw terminals ( - pc ) conductor size: 0.2 to 2.5 mm 2 - flexible or rigid chassis ground fixed rising cage-clamp screw terminals conductor size: 0.14 to 2.5 mm 2 terminators a single termination is provided automatically by using either 1 or 2 power modules environmental ambient temperature operating ?40c to +65c (see note) storage ?40c to +85c note: this temperature range applies only when the carrier din rail is mounted vertically on a vertical surface. ingress protection ip20 to bs en60529 (additional protection by means of enclosure) electrical emc compliance to en61326:1998 electrical equiment for measurement, control and laboratory use - emc requirements physical networks iec61158-2 isa-s50.02 part 2-1992 f oundation fieldbus tm h1 profibus pa ordering information components and accessories part no description f880-ca f880 module carrier, unpopulated F801 8-segment power module f880-ps f880 system, pluggable screw terminal connectors, comprising f880 carrier and two F801 modules f880-pc f880 system, pluggable spring clamp connectors, comprising f880 carrier and two F801 modules

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europe (emea) tel: +44 (0)1582 723633 fax: +44 (0)1582 422283 americas tel: +1 603 926 0090 fax: +1 603 926 1899 asia pacific tel: +65 487 7887 fax: +65 487 7997 e-mail: enquiry@mtl-inst.com web site: www.mtl-inst.com dec 2005

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dimensions

linking alarm circuits F801 module top panel showing indicators
europe (emea) tel: +44 (0)1582 723633 fax: +44 (0)1582 422283 americas tel: +1 603 926 0090 fax: +1 603 926 1899 asia pacific tel: +65 487 7887 fax: +65 487 7997 e-mail: enquiry@mtl-inst.com web site: www.mtl-inst.com dec 2005 approvals - for the latest certification information visit www.mtl-inst.com/certs_1.nsf country authority standard certificate approved for ratings ? f ieldbus ff-831 ps001700 h1 profile-132 ? foundation tm

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