$ 115.00
Weidmueller EM220-RTU-4DI2DO energy meter for single and three-phase systems with Modbus RTU and digital I/O for industrial energy monitoring.
The Weidmueller EM220-RTU-4DI2DO energy meter with Modbus RTU and digital I/O is a compact front-panel mounted device designed for precise monitoring of single-phase and three-phase electrical networks. It enables clear visibility of voltage, current, power, energy consumption, frequency, and power factor, supporting better understanding of electrical load behavior. Designed for industrial control panels, it supports current transformer connections for high-current systems and communicates reliably via RS-485. This makes it a practical choice for automation and energy monitoring applications requiring consistent, real-time electrical data.
The EM220-RTU-4DI2DO supports efficient energy management by delivering continuous measurements with fast refresh rates, helping users quickly identify load changes or abnormal conditions. Its integrated LCD allows direct on-site reading, while Modbus RTU communication enables centralized monitoring through PLCs or supervisory systems. The inclusion of digital inputs and configurable digital outputs allows status monitoring, signaling, or basic control functions without extra modules. This reduces panel complexity, lowers installation effort, and improves overall system reliability while supporting long-term energy optimization.
Why Weidmueller EM220-RTU-4DI2DO?
The Weidmueller EM220-RTU-4DI2DO stands out because it combines accurate multi-phase energy measurement, real-time communication, and built-in digital I/O in one compact device. Instead of using separate meters, gateways, and signal modules, this model consolidates essential functions into a single unit. The result is a cleaner control panel, faster commissioning, and dependable energy visibility that supports both operational monitoring and long-term efficiency improvement.
What problem does it solve?
Many industrial systems lack clear, actionable insight into where and how electrical energy is being consumed. The EM220-RTU-4DI2DO solves this by continuously measuring key electrical parameters and making them available locally and to higher-level control systems. It helps detect abnormal loads, energy losses, and inefficiencies early, enabling better control, reduced downtime, and informed decisions to optimize energy usage and operating costs.
| Feature | Details | Benefit |
|---|---|---|
| Energy Meter Type | Power measurement for single-phase and three-phase systems | Supports a wide range of industrial and building power networks with one device |
| Measurement Functions | Voltage, current, active power, reactive power, apparent power, power factor, frequency | Provides full electrical transparency for accurate energy analysis and optimization |
| Energy Measurement Accuracy | Class 0.5S for active energy, 0.5% accuracy for voltage and current | Ensures reliable billing-grade and monitoring-grade energy data |
| Current Transformer Support | 1 A / 5 A CT input, up to 5000 A primary current | Enables safe and accurate measurement of high-current installations |
| Voltage Measurement Range | 50–600 V AC (line-to-line), 50–345 V AC (line-to-neutral) | Covers common low-voltage industrial and commercial power systems |
| Communication Interface | RS-485 with Modbus RTU protocol | Allows seamless integration with PLCs, SCADA, and energy management systems |
| Digital Inputs | 4 digital inputs | Enables status monitoring, pulse counting, or external signal acquisition |
| Digital Outputs | 2 configurable digital outputs | Supports alarms, signaling, or simple control functions without extra hardware |
| Display | Integrated LCD with real-time values | Provides instant local visibility for commissioning and diagnostics |
| Update Rate | Measurement update every 1 second | Enables fast detection of load changes and abnormal conditions |
| Mounting Method | Front-panel mounting | Ideal for control cabinets, switchboards, and energy panels |
| Power Supply | 75–270 V AC / 100–380 V DC | Simplifies installation across diverse power environments |
| Environmental Protection | Front panel IP51, device IP20 | Suitable for industrial control cabinet installations |
| Operating Temperature | -25 °C to +55 °C | Reliable operation in demanding industrial environments |
| Dimensions (W × H × D) | 96 × 96 × 74 mm | Compact footprint for space-efficient panel design |
| Compliance | RoHS compliant | Supports environmentally responsible system design |
Download Weidmuller EM220-RTU-4DI2DO (7760051005) Datasheet
| Commercial Data | Details |
|---|---|
| EAN Number | 6944169818219 |
| Net Weight | 360 g |
In industrial control cabinets, maintaining visibility over electrical consumption is critical for stable operation and cost control. The Weidmueller EM220-RTU-4DI2DO is installed directly on panel fronts to continuously monitor three-phase loads feeding machines, drives, or process lines. Its high measurement accuracy ensures reliable tracking of voltage, current, and power even under fluctuating loads. Modbus RTU communication allows measured data to be transmitted to PLCs or SCADA systems for centralized analysis. The built-in digital inputs capture machine states or breaker positions, while digital outputs trigger alarms when abnormal consumption or overload conditions are detected.
Modern manufacturing equipment often suffers from hidden energy losses caused by inefficient motors, unbalanced phases, or standby consumption. By integrating the EM220-RTU-4DI2DO into machine power distribution, operators gain real-time insight into active and reactive energy usage. Fast measurement updates help identify peak demand events during machine start-up or heavy production cycles. The device’s compatibility with current transformers enables safe monitoring of high-current motors without intrusive wiring. Collected data supports energy optimization initiatives, predictive maintenance planning, and machine-level energy benchmarking, helping manufacturers reduce operating costs while maintaining production reliability.
In commercial facilities such as office buildings, data centers, or shopping complexes, understanding electrical load behavior is essential for efficient facility management. The EM220-RTU-4DI2DO can be deployed at distribution boards to monitor feeders supplying lighting, HVAC systems, or tenant circuits. Its clear local display allows maintenance staff to verify conditions on-site, while Modbus RTU enables integration with building management systems. Digital inputs can track breaker status or external meters, and digital outputs can signal alarms when predefined energy thresholds are exceeded, supporting proactive energy control and fault detection.
Utility substations and infrastructure installations require dependable monitoring to ensure stable power delivery and regulatory compliance. The EM220-RTU-4DI2DO supports both three-wire and four-wire systems, making it suitable for diverse low-voltage distribution scenarios. Continuous measurement of power factor, frequency, and energy flow helps operators identify imbalance issues, reactive power penalties, or abnormal consumption patterns. Through Modbus RTU, data is forwarded to remote monitoring platforms for long-term trend analysis. The device’s robust design and wide operating temperature range ensure reliable performance in demanding infrastructure environments where uptime is critical.
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