Intelligent protection

Rockwell Automation has announced further enhancements to its Allen-Bradley 193-E3 range of intelligent motor protection relays.
The 193-E3 Plus series B comes with a range of new features, including DeviceLogix capabilities, designed to enhance the fault management of network-enabled motor protection solutions.
DeviceLogix allows programming of the 193-E3 Plus, reducing network traffic. In the event of a network failure, the E3 Plus can revert to local control, allowing processes o continue uninterrupted or initiating a safe shutdown as required. Device addressing can now be accomplished manually via a rotary dip switch in the 193-E3 Plus.
193-E3 Plus also features Unconnected Message Manager (UCMM), which allows the 193-E3 Plus to maintain simultaneous conversations with other DeviceNet devices. DeviceNet also allows users to access status information and data including device, trip and warning status, time to trip/time to reset (overload, online current monitoring and history of the past five trips.
The protection characteristics of the E3 range include thermal overload, phase loss, stall, jam, overload, thermistor and current imbalance. In addition, all E3 Series products have built-in earth fault sensors. The 193-E3 Plus can now be programmed with a second load current setting which enables better fault management in two speed applications. Fault conditions are fully programmable, including pre-trip warnings which alert production personnel when a potential fault condition is detected. This gives the operator time to address a situation before the motor goes offline, minimising downtime. The 193-E3 Plus can now also be configured for remote trip via a hardwire connection.
The compact dimensions of the new 193-E3 Plus make it suitable for refurbishment work since it is typically smaller than the unit it replaces. Powerful monitoring and diagnostics mean the product offers a cost-effective upgrade path in existing applications as well as making it suitable for new intelligent motor control centres and de-centralised solutions.