Datasheet > F801

F801

更新时间： 2024-11-20 06:58:43

品牌	Logo	应用领域
其他 - ETC		电机
页数	文件大小	规格书
4页	152K
描述
8-segment redundant fieldbus power system for use with Yokogawa CENTUM 3000 R3 Control System

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F801 数据手册

8-segment redundant fieldbus power

system for use with Yokogawa

CENTUM 3000 R3 Control System

F880

♦ Integrated redundant fieldbus

power for ALF111 FOUNDATION

fieldbus™ cards

♦

Low power dissipation

Passive module carrier

On-line diagnostics option

Redundant power & conditioning

♦

High-density, compact design

Fully isolated

♦

The F880 fieldbus power system is designed

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

to provide redundant power for eight FOUNDATION

fieldbus 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.

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.

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

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).

FOUNDATION fieldbus™ is a trademark of Fieldbus Foundation™ , Austin, Texas.

EUROPE (EMEA)

AMERICAS

Tel: +44 (0)1582 723633

Tel: +1 603 926 0090

Tel: +65 487 7887

Fax: +44 (0)1582 422283

Fax: +1 603 926 1899

Fax: +65 487 7997

Dec 2005

ASIA PACIFIC

E-mail: enquiry@mtl-inst.com

Web site: www.mtl-inst.com

12 3 4

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