CMM-R5M – Data Logging Measurement Unit

The CMM-R5M measurement center allows measuring the main electrical parameters of the network and ensures bidirectional energy metering. It features 4 voltage measurement inputs and 3 current measurement inputs for flexible sensors (Rogowski coils).

DIN rail mounting
Accuracy: Class 0.5S for active energy
Harmonics up to the 25th order
3 tariffs (internal clock)
32GB SD memory
RS-485 Modbus interface
1 Relay Output
Compatible with M-VISU

Standards:

IEC 62052-11
IEC 61557-12
IEC 62053-21/22/23
IEC 50470-1/3
IEC 61010-1/2/31

Certifications

The CMM-R5M measurement center allows measuring the main electrical parameters of the network and ensures bidirectional energy metering. It is equipped with 4 voltage measurement inputs and 3 current measurement inputs for flexible sensors (Rogowski coils).

Additionally, it features an RS-485 communication port with Modbus protocol, making it easily integrable into any supervision system or energy management system for monitoring installations. Primarily designed for energy management applications and monitoring systems, it is suitable for mounting on DIN rails (distribution boards in commercial or residential buildings) or within drawers of removable switchboards (industrial settings, infrastructure, etc.).

The CMM-R5M measurement unit comes standard with an SD-type memory, with a capacity of 32GB. Data is recorded in CSV format, allowing direct reading from spreadsheet software like Excel or similar tools. Alternatively, users can utilize the M-VISU data analysis software from MEIER Energy, provided free of charge.

Applications

Data collection
Energy management
Remote monitoring

Main features:

Measurement:

V/A/P/Q/S/F/PF
Maximeter of currents and active power

Power quality:

THDU and THDI
Up to the 25th harmonic

Energy measurement:

Bidirectional energy
Reactive energy in 4 quadrants
Energy by tariff (3 tariffs)

Special features:

32 GB SD memory
1 relay output
Current measurement inputs with Rogowski coil
Internal clock

Functions

Network

TN, TT, IT networks
Single-phase or Three-phase
BT et HT

Communication

RS485 Interface
Modbus-RTU Protocol

Accuracy

Active energy: 0.5S
Voltage: 0.2%
Current : 0.5%

Technical characteristics

Display

2-inch color TFT

Accuracy

V/A: 0.2%
P / Q / S / PF: 0.5%
F: 2%
+/- kWh: Class 0.5S
+/- kVarh: Class 2

Input voltage

Nominal value: 100 – 500V(LL)
Overvoltage: Continuous: 1.2 x rated voltage. Instantaneous: 2Vn/10s
Load: <= 0.1VA (per phase)
Impedance: >= 1.7MΩ
Frequency: 45Hz~65Hz

Input current

Rogowski coil RCM16 : 100A-85mv/A @ 50HZ± 0.5%
Rogowski coil RCM36 : 600A-85mv/A @ 50HZ± 0.5%
Rogowski coil RCM100:
1000A-85mv/A @ 50HZ± 0.5%
Rogowski coil RCM150: 3000A-85mv/A @ 50HZ± 0.5%
Rogowski coil RCM200: 6000A-50mv/A @ 50HZ± 0.5%

Current input characteristics

Nominal value – Primary current: Adjustable from 0.1A to 9999A
Overload: 600mv for 10s/h
Measurement range: 1/225mv – 333mv

Power supply

Operating range: 85~265V AC / 50~60Hz / 100~370V DC
Consumption: <= 5VA

Communication port

RS485, Modbus-RTU, 2-wire, up to 57600bps

Relay output

1 relay output

Ambient conditions

Operating temperature: -25°C to +55°C
Storage temperature: -40°C to +85°C
Relative humidity: 95% RH at 50°C(under-condensation)
Pollution degree: 2
Overvoltage category: Cat. III for networks up to 277/480VAC
Dielectric strength: According to IEC61010-1, Double insulation of the front panel
Altitude: 3000m Max
Degree of protection: IP20 according to IEC 60529

Electromagnetic compatibility

Electrostatic discharge: Level IV(IEC61000-4-2)
Radiation immunity: Level III (IEC61000-4-3)
Transient immunity: Level IV (IEC61000-4-4)
Lightning immunity: Level IV (IEC61000-4-5)
Conducted immunity: Level III (IEC61000-4-6)
Immunity to power frequency magnetic fields: 0.5mT (IEC61000-4-8)
Conducted and radiated emissions: Class B (EN55022)