Computer/Embedded Technology


Passive I/O distribution boxes

10 June 2009 Computer/Embedded Technology

Erni Electronics has expanded its M8/M12 product line with the introduction of a line of passive I/O distribution boxes. Complementing its industry-proven M8/M12 cable assemblies and field-attachable connectors, these modules are designed for industrial automation, especially as they avoid the use of parallel cabling and complex installation involving control units or switch cabinets. Instead of using numerous standalone cables, sensors and actuators can be directly connected in close vicinity to the machine or process. The concept of decentralised modules and a more structured installation enables sensor/actuator lines to be easily, quickly and securely replaceable.

The M8/M12 distribution boxes with UL/CSA approval are designed for IP65/IP67 protection, and are built for use in harsh and humid industrial environments. The housing is available in a variety of port numbers and is built to withstand oil, lubricants and vibration in harsh environments. A range of mounting holes gives the option of direct attachment, and ensures the close proximity of the installation to the process. The control level is connected by a pre-assembled trunk cable available in different standard lengths. Designed as a hybrid cable, it acts as both the power supply and the data link for sensors and actuators connected to the I/O box.

The M8 I/O boxes are available with 3-pin and 4-pin sockets and with 4, 6, 8 and 10 ports, and the M12 I/O boxes ship with 4- and 5-pin sockets (A coded) and four and eight ports, respectively. All boxes utilise LEDs to display the status and operation mode of the I/O ports, and every port is equipped with a removable identification label. Erni supplies PUR insulated cables in standard lengths of 3, 5, 10 and 15 metres. The cables demonstrate high resistance to oil, gasoline and chemicals, and are abrasion resistant and drag chain capable.



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