Beckhoff Automation introduces EP9214 power distributor box
March 28, 2013 – Beckhoff Automation introduced the new EP9214 power distributor box. This solution enables the local distribution and switching off of the power supply, providing the ability to supply up to four NEC class-2 circuits via typical M8 plug connectors. This innovative I/O solution also provides complete diagnostics and control functionality for up to eight 24 V DC branch circuits (Us & Up power) per power box.
The IP 67-rated EtherCAT Box I/O modules typically use M8 plug connectors for supplying power, which (according to NEC Class 2 wiring) is limited to 100VA and are suitable for a maximum amperage of 4 A. Therefore, it may not be possible to simply loop the supply through when modules have a large number of outputs. A further limitation concerns the cables: the M8 plug connectors can only be used up to a maximum cable cross-section of 0.34 mm2 (#22AWG). If the cables from the control cabinet to the machine are long, an excessive voltage drop can occur at higher currents. As a result, the 24 V DC voltage (± 15/20%) can no longer be maintained and the modules or connected sensors/actuators may no longer work properly.
The EP9214 power box is the ideal solution for these challenges. Equipped with 7/8-inch plug connectors, it maintains a total current of 16 A for each control and peripheral voltage with cable cross-sections of 1.5 and 2.5 mm2 (roughly #14AWG). Even considerably higher starting currents are briefly permissible at the outputs, so that trouble-free start-up of the connected devices is guaranteed. Wiring in the field using the power distributor box is significantly simpler and less expensive than equipping the system with additional terminal boxes with fuses.
The diagnostic and control functions of the EP9214 provide additional benefits. Apart from monitoring the input current, the currents in the control channel and the peripheral voltage channel are also monitored separately. In addition, the monitoring, limitation and, if necessary, the switching off of the power supply is possible for both channels. The EP9214 power box can be fully controlled via the EtherCAT network and the current diagnostics can be carried out conveniently via the controller. The eight 24 V DC voltage circuits can also be separately switched on or off directly via EtherCAT in order to increase the energy efficiency of the plant.
Beckhoff Automation provides advanced, open automation products based upon proven technologies so that customers can implement high performance control systems faster and at a lower overall cost than traditional PLC and motion control systems. Beckhoff’s “New Automation Technology” product range includes PC based control, industrial PCs, automation controllers, operator interface, I/O, servo drives and motors. With representation in more than 60 countries, Beckhoff is well positioned to provide global sales and service to its customers. Beckhoff sales and service are handled directly, with no intermediaries involved for exceptional customer service and consultation.
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