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2010 CA08103002Z-EN

www.eaton.com

18/8 IZM circuit-breakers, IN switch-disconnectors

IZMX16 air circuit-breakers, INX16 switch-disconnectors

Components for IZMX16 communication

For the IZMX16, PROFIBUS-DP or Modbus RTU are optionally available as fieldbus

connections. Communication modules IZMX-PCAMand IZMX-MCAMare compact

units for direct mounting in the auxiliary terminal strip. On retrofitting, four modular

terminals are replaced with one communication module. This is possible for both for

fixed and withdrawable units. The terminals provide all data available in the trip

block to the fieldbus, including switching state, current, voltage, power, energy, and

diagnostic information such as overcurrent, phase asymmetry and overvoltage.

Through the bus the motor operator can also be remotely controlled.

Requirements

The communications modules can be used in combination with IZMX16 circuit-

breakers …-U or IZMX16…-P… (in preparation) circuit-breakers.

Configuration

PROFIBUS-DP configuration

Communications module IZMX-PCAM has a 9-pin D-Sub socket for connection to

PROFIBUS. The module works as a slave on PROFIBUS-DP; the data is defined

through a standardized device master data file, which permits smooth integration of

IZMX in a DP line.

• On the PROFIBUS-DP side the module supports automatic baud rate detection;

the PROFIBUS-DP bus address is set through the trip unit’s display. The maximum

cable length is 2.4 km.

• To operate the IZMX-PCAM, a supply voltage of 24 V DC is required.

• The data connection to the circuit-breaker is implemented internally through a

serial high--speed data connection.

Data access via PROFIBUS-DP

The data on PROFIBUS-DP are offered according to the profile for low-voltage

switchgear (LVSG) of PROFIBUS International (PROFIBUS and PROFINET User

Group). Five different data structures with varying numbers of parameters are

available through the device master data file. This allows a data filter to be easily

implemented, which simplifies integration of the IZM data into the control system.

PROFIBUS-DP

Modbus

IZMX-MCAM

IZMX-PCAM

with U or P release

IZMX16

with undervoltage or P release

Modbus configuration

Communications module IZMX-MCAM has a plug-in screw terminal for connection

to Modbus. The module operates as a Modbus slave.

• Baud rate, data format and address (max. 247) for Modbus are set with the input

keys of the trip unit. The maximum cable length is 1.2 km.

• The Modbus must be terminated with a 120 Ω terminating resistor.

• To operate the IZMX-PCAM, a supply voltage of 24 V DC is required.

• The data connection to the circuit-breaker is implemented internally through a

serial high-speed data connection.

Data access via Modbus

The data is contained in comprehensive data tables. Each data point is available as

floating-point (IEEE) or fixed-point value. This variance allows the integration of the

IZMX to be adapted to the Modbus architecture. This enables a simple means of im-

plementing a data filter, which facilitates the integration of IZMX data in the

control system.

Documentation

Operator manual

For device series IZM26:

AWB1230-1621de (deutsch)

AWB1230-1621en (english)

AWB1230-1622de (deutsch)

AWB1230-1622en (english)

For device series IZMX16:

AWB1230-1623de (deutsch)

AWB1230-1623en (english)

AWB1230-1624de (deutsch)

AWB1230-1624en (english)