Product category:
Industrial Drives/Controls
News Release from: Rockwell Automation | Subject: Allen-Bradley 193E electronic overload relay
Edited by the Engineeringtalk Editorial
Team on 17 May 2000
Relays give more cost-effective motor
management
Complete Automation leader Rockwell Automation announces the Allen-Bradley 193-E3 Electronic Overload Relay, an important addition to the extensive Modular Control System (MCS) range.
Rockwell Automation announces the Allen-Bradley 193-E3 Electronic Overload Relay, an important addition to the extensive Modular Control System (MCS) range Two versions are available, the 193-E3 and 193-E3 Plus, both offering preventive maintenance tools, diagnostic capabilities and built in DeviceNet connectivity
This article was originally published on Engineeringtalk on 20 Feb 2001 at 8.00am (UK)
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The 193-E3 Plus has additional inputs and outputs as well as earth fault and thermistor functionality.
The 193-E3 is compatible with the Allen-Bradley 100-C contactor, rated for motors from 4 to 45 kW.
Alternatively, it can be used as a stand- alone unit using a DIN rail adapter, or used with current transformers to provide higher current ratings.
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While traditional motion control systems typically have their own proprietary text based programming languages, ControlLogix uses standard 'ladder logic' programming.
This installation flexibility, makes the 193-E3 particularly suitable for retrofit applications.
Thirteen frame sizes cover the current range up to 2,250 Amps and each offers a wide operating band.
They are compact with the 45A unit being only 45 mm wide, whilst the 90A unit is only 72 mm wide.
The protection characteristics of the E3 range, include thermal overload, phase loss, stall, jam, underload and current imbalance.
Both units are fully programmable to safely allow maximum utilisation of the motor.
Warning settings allow the installer to implement a preventative protection program.
The device alerts production personnel when a potential fault condition is detected, prior to tripping.
This gives the operator time to address a situation before the motor goes off-line.
Additional inputs and outputs help to simplify control architecture and reduce extra I/O block requirements.
There are 2 inputs and 1 output on the E3 and 4 inputs and 2 outputs on the E3 Plus.
By incorporating this broad functionality into a single, compact device, the 193-E3 and E3 Plus relays help to optimise panel space, reduce installation and start-up time and simplify troubleshooting.
The built-in DeviceNet port allows users to access status information and data from the 193-E3 and E3 Plus relays.
Diagnostic information available via DeviceNet includes device, trip and warning status, time to trip/time to reset (overload), and history of the past five trips.
Network communications are a requirement in any preventative motor protection system.
They make the preventative aspect of the process possible by collecting, processing and displaying vital motor information.
For the 193-E3 this includes individual and average phase currents, percentage of thermal capacity utilised, current imbalance and earth fault current.
193-E3 and 193-E3 Plus electronic overload relays are available in IEC and NEMA configuration, they are CE, CSA and UL certified to meet Global requirements.
The introduction of the Allen-Bradley 193E series electronic overload relay with built-in communications moves motor management into a new era.
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