Rockwell-automation 1797-CEC FLEX Ex Bus Isolator and Flexbus Connecto Manual de usuario descargar pdf (Pagina 4)

4 FLEX Ex Bus Isolator and Flexbus Connector

Publication

1797-5.13 - June 2010

Product Features

 Provides an IS-compatible mechanism to separate two sections of the

backplane allowing IS and non-IS field-device wiring to the same I/O

group.

 Converts hazardous power to IS-safe power to run one side of the bus

receiver/transmitter circuitry and IS-safe FLEX Ex backplane power

to slave side modules.

 Allows up to eight FLEX Ex modules may be attached to the slave

side.

Intermixed Systems

The bus isolator modules, 1797-BIC and 1797-CEC, let you configure FLEX

Ex modules and FLEX I/O modules on the DIN rail when attached to the

same adapter and grouped together on appropriate sides of the bus isolator

module. This highly flexible, cost-effective solution combines intrinsically safe

and nonintrinsically safe systems.

Intermixed systems can be configured for use in the:

 safe area much like traditional IS and I/O systems.

 hazardous and safe control equipment where the distance of physical

separation is short.

 FLEX Ex I/O with communication adapters that are not intrinsically

safe.

Mix Systems in the Safe Area

Any Communication

Adapter Supported by

FLEX I/O system

Bus Isolator

1797-CEC

1797-BIC

FLEX I/O system

Nonhazardous Area

Zone 2

Hazardous Area

Zone 1

1794-CE3

FLEX Ex system

Max of

1 m (3.28 ft)

Field Wiring to

Zone 0

40087

1 2 3 4 5 6 7 8 9 ... 27 28

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Rockwell-automation 1797-CEC FLEX Ex Bus Isolator and Flexbus Connecto Manual de usuario Pagina 4

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