The modular design of the WEG low-voltage electric motor management system offers the flexibility of expanded functionality. Engineered as a plug-and-play solution, the compact WEG SRW01 is ideal for applications where space is limited. It incorporates state-of-the-art technology and network communication capabilities.
Designed for use with power supplies from 24 to 220 VAC/DC, the relay has a facility, if selected, to monitor voltage up to 690 VAC and measures current from 0,25 A up to 840 A. The reliability and precision achieved with the unit makes it suitable for the toughest industrial applications.
Pre-programmed operation modes allow use in several starting and monitoring configurations, which includes a mode that allows it to be programmed for an individual application, allowing optimum flexibility. The unit provides LED indication for input and output activations status, operation mode status, power supply status, and alarm status.
The digital input and output functions of the control unit are automatically configured as operation mode is selected. The system will also automatically recognise which protocol is in use. The digital inputs can be configured to monitor external digital signals. Using this feature, the output contact from an external relay can be connected to the digital input of the smart relay. Significantly, it is this feature that allows the user to incorporate various protection mechanisms, such as earth leakage and thermal in the same relay.
The WEG SRW01 supports a range of communications networks including DeviceNet, Modbus-RTU, Profibus-DP, and Ethernet (2016). The communications modules can be easily exchanged due to the design of the system. It has a USB port for monitoring, programming and online back-up through a PC when using WLP software.
Rapid system monitoring and relay parameterisation is done via a keypad and the device’s internal memory makes it possible to record up to three parameter settings or user programmes. The relay incorporates a thermal memory circuit which will maintain the motor thermal image, even in the event of power loss.
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