Interface modules for interfacing control systems to field devices

17 May 2006 Interconnection

The 39170 series interface modules from Molex is claimed to provide a cost-effective method to interface field wiring to PLCs and other control devices. Intended for machine builders, manufacturers of capital equipment, system integrators, electrical design firms and panel builders, these DIN-Rail mounted devices connect a high-density cable from a PLC or electronic control system to terminal blocks where wiring from field devices is terminated.

The result is reduced wiring time and decreased checkout and troubleshooting time, since the connections between the high-density PLC cable and the terminal blocks are prewired on a printed circuit board.

Molex says that the benefits customers will see from using the interface modules include:

* Reduced wiring time by up to 50%.

* Quicker checkout of new control systems and faster troubleshooting of installed systems.

* Space savings of up to 60% compared to standard DIN rail terminal blocks.

* Lower total installation cost.

The interface modules support from nine to 50 circuits per module, and offer design flexibility with a choice of connection methods. The modules are available with fixed or pluggable terminal blocks, and the PLC/controller interface is available with a ribbon cable connector or a D-sub connector. Clear terminal markings help eliminate wiring errors, and reliable connections are assured using rising cage clamp technology.

Molex can also customise the interface modules with the specific components or connectors needed for high volume OEM applications. Electrical components that can be added include resistors, capacitors, diodes, and LEDs.

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