2010 CA08103002Z-EN
www.eaton.com18/8 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)




