General
Supply voltage	95 .. 240 V AC
Frequency range	45-65 Hz
Measurement category	300V CATIII
Voltage measurement inputs	4
Current measurement inputs	4
Measurement range L-N	10-300 V
Measurement range L-L	17-520 V
Current transformer	../1, ../5A
Digital inputs	2
Digital outputs	2
Temperature measurement input	1
Additional memory	128 MB Flash
Interfaces	RS232, RS485, Ethernet 10/100 BaseTX
Programming software	GridVis Basic
Scope of delivery	Cross-Patch cable CAT5e 2m, RS485 termination resistor 120Ohm, quick start guide UMG 604 including safety instructions and software GridVis
Web-Server
APP measurement value monitor
APP IEC 61000-2-4 Watchdog Light PRO

The Janitza UMG 604 E-PRO 230V (UL) is a high-performance power analyzer designed for precise measurement and analysis of electrical energy parameters in industrial and commercial installations. The device enables continuous monitoring of voltage, current, power, frequency, and other electrical quantities, and is designed for use in networks with a supply voltage of 95 to 240 V AC (45–65 Hz) or 135 to 340 V DC. The measurement category is 300 V CAT III, ensuring safe operation in medium voltage ranges. The analyzer features four voltage measurement inputs and four current measurement inputs, with measurement ranges defined for L–N (10–300 V) and L–L (17–520 V). The current transformers are rated for 1 A and 5 A, allowing flexible adaptation to various loads.

Applications

The UMG 604 E-PRO 230V (UL) is used in installations requiring detailed energy monitoring and optimization, for example in production facilities, energy distribution networks, building technology, or voltage quality monitoring. The integrated web server function enables remote monitoring over a network, allowing access to measurement data and settings from remote locations. Its application in industrial automation and compliance with standards such as IEC 61000-2-4 is supported by the integrated watchdog function.

Functions and Equipment in Detail

The device offers two digital inputs and two digital outputs, which can be used for integration into control and monitoring systems. A temperature measurement input allows parallel acquisition of temperature data, which is beneficial for monitoring machines or electrical installations. The integrated additional memory with 128 MB Flash enables long-term storage of measurement data, making historical analysis and trend evaluation possible. The integrated applications include the measurement value monitor, which graphically displays online and historical measurement values, as well as the IEC 61000-2-4 Watchdog Light PRO, which monitors voltage quality limits according to this standard.

Technology Explained Simply

The UMG 604 E-PRO 230V (UL) is equipped with multiple interfaces: RS232, RS485, and Ethernet 10/100 BaseTX. The Ethernet interface enables network integration and access via a web server, allowing data transmission and visualization over local or higher-level networks. The RS485 interface is suitable for communication with other devices in industrial environments, particularly in systems using the Modbus protocol. The RS232 interface serves as an additional communication option, for example for connecting to a PC. The programming software GridVis Basic is available on the manufacturer’s website and enables configuration and data analysis of the device.

Compatibility and Accessories

The device includes a cross-patch cable (part no. 0801505, CAT5e, 2 m) and an RS485 termination resistor (120 Ohm, part no. 5200008) in the delivery scope. Additionally, a quick start guide (part no. 3303338) with safety instructions and information about the GridVis software is included. These components support quick commissioning and integration into existing systems. Compatibility with standard protocols such as Modbus over RS485 and Ethernet facilitates integration into existing automation and energy management systems.

Mounting and Installation

Installation typically takes place in enclosures or at suitable mounting points in the electrical network. The connections for voltage and current are clearly marked, and the integrated safety functions (CAT III 300 V) ensure safe operation. The network interfaces require a connection to a local network, where the included cross-patch cable can be used to connect to a switch or router. Configuration is performed via the integrated web interface or through the GridVis software.

Advantages in Operation

Operation of the UMG 604 E-PRO 230V (UL) is particularly efficient due to the integrated applications and remote access via the web server. Continuous data storage and graphical display of measurement values enable quick identification of deviations or efficiency issues. Monitoring of voltage quality according to IEC 61000-2-4 supports compliance with quality standards, especially in sensitive applications such as manufacturing or IT infrastructure. The combination of local storage, network access, and digital inputs/outputs makes the device a flexible component in modern energy management systems.