Square D PowerLogic CM4000T Circuit Monitor - Hardware J1, Firmware 16.000

The Square D PowerLogic CM4000T is a high-accuracy, multifunction circuit monitor designed for comprehensive electrical power measurement and analysis. It is widely used in industrial power distribution, sub-metering, and energy management systems. The unit with hardware version J1 and firmware 16.000 offers enhanced logging and communication features, supporting both AC and DC measurement up to 300 VDC.

Measurement Specifications

The CM4000T measures voltage (up to 600 VAC/300 VDC), current (via CTs), power (active, reactive, apparent), energy, frequency, power factor, and demand. Accuracy: ±0.1% for voltage/current, ±0.2% for power (class 0.2S). It supports 3-phase, 2-phase, or single-phase systems, with both 3-wire and 4-wire configurations.

Inputs and Outputs

It has 4 voltage inputs, 4 current inputs (standard 5 A CT or optional 1 A), and 2 digital inputs for pulse counting or status monitoring. Also includes 2 digital outputs (solid-state relays) for alarm or control signals. The monitor operates from 120-240 VAC or 125-300 VDC auxiliary power.

Communication Capabilities

Standard communication is via RS-485 (Modbus RTU) and a built-in Ethernet port (Modbus TCP, HTTP web server). The firmware 16.000 introduces improved data logging with up to 4 MB non-volatile memory for trend records. It also supports SNMP and DNP 3.0 for advanced integration.

Display and User Interface

The unit features a backlit LCD display showing real-time values, and a keypad for local navigation. The display can cycle through multiple screens including phasor diagrams and harmonic spectra (up to 31st harmonic).

Data Logging and Alarms

It can log up to 16 parameters with customizable intervals (1 minute to 1 hour). Alarms can be set for over/under voltage, current, power, and power factor, with programmed actions via digital outputs or email notifications.

Environmental and Mechanical Data

Operating temperature: -10 to +55°C, storage: -20 to +70°C. Enclosure: panel-mount, 96 x 96 mm square (DIN standard). Depth: 120 mm. Weight: 0.8 kg. Protection: IP40 front, IP20 rear.

Installation and Wiring

Mounting requires a cutout of 92 x 92 mm. Voltage inputs are via screw terminals, current inputs via spring-clamp or screw. CTs must be properly oriented. Proper grounding and shielding are critical for accuracy.

Compatibility with PLC Systems

Data can be read by any PLC with Modbus RTU or TCP support. Typical applications include integration with PLC for load shedding, demand limiting, and predictive maintenance.

Certifications

CE, UL 61010, and IEC 62053-22 approved. Compliant with IEEE 519 for harmonic measurements.

Maintenance

No routine calibration required; however, periodic verification using a reference source is recommended. Firmware upgrades are via Ethernet.

In summary, the Square D CM4000T circuit monitor offers precise, comprehensive power monitoring with flexible communication, making it an essential tool for energy management and PLC-based control systems.