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Carlo Gavazzi EM5XX Series

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Description​

The EM5xx series offers a range of compact and versatile energy analyzers designed for monitoring electrical consumption and quality in single-phase, two-phase, and three-phase systems. These devices are ideal for use in residential, commercial, and industrial environments where accurate measurement, reliability, and ease of use are essential.

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This energy meter requires the use of an external sensor, such as a current transformer (CT), to measure current. The sensor must be selected based on the expected load and system configuration.

Power Installation​

Example of Installation: Carlo Gavazzi Energy Analyzer EM530​

Carlo Gavazzi Energy Analyzer - EM530
Pin NN
Pin 1L1
Pin 2L2
Pin 3L3
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In this case, it is also possible to connect the energy analyzer in single-phase mode, by wiring the neutral (N) to the N terminal and the phase (L) to terminal 1.

Connection Diagram (EM530)​

Carlo Gavazzi - EM530 - Connection Diagram

Sensor Installation​

Example of Installation: Split Core Current Transformer CTA6X200A5A​

Carlo Gavazzi Energy Analyzer - EM530Split Core Current Transformer - CTA6X200A5A
Pin 13K
Pin 14L

Connection Diagram (CTA6X200A5A)​

Carlo Gavazzi - CTA6X200A5A - Connection Diagram

Modbus Communication​

Example of Modbus Communication Installation: Carlo Gavazzi Energy Analyzer EM530​

Carlo Gavazzi Energy Analyzer – EM530CHESTER Modbus
Pin 9Pin 6 (A−)
Pin 8Pin 7 (B+)
Pin 10Pin 1 (GND)

Modbus communication (EM530)​

Carlo Gavazzi - EM530 - Modbus communication

Browsing and Configuration Buttons​

  • ▲ Up button

    1. Navigation through the menu
    2. Increasing the value

  • ▼ Down button

    1. Navigation through the menu
    2. Decreasing the value

  • ⯀ Select / Enter / Menu button

Modbus Communication Configuration for Energy Analyzer​

  1. Press the Select button to open the menu.
  2. Use the Select button to choose the Setting option.
  3. Use the Up/Down buttons to select the menu item: r5485.
  4. Enter the configuration values according to the table below.

Default Modbus Communication Configuration​

AddressBaud RateParityStop Bit
19.6kNone1

Modbus Communication Configuration for Chester​

Use the following commands to configure communication parameters via Chester terminal:

app config modbus-baud "9600"
app config modbus-addr "1"
app config modbus-parity "none"
app config modbus-stop-bits "1"
app config em-type "g2"
config save

CT Ratio Configuration​

  1. Press the Select button to open the menu.
  2. Use the Select button to choose the Reset option.
  3. Use the Up/Down buttons to navigate to the menu item MID res.
  4. Press Start.
  5. Enter the CT ratio values.
  6. Confirm the settings by selecting YES using the Up button, then press the Select button.

Example of CT Ratio Selection​

Carlo Gavazzi Split Core Current Transformer - CTA6X200A5A

ModelCT Ratio
CTA6X200A5A40 (200:5 → 40)
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The CT ratio is selected based on the maximum expected primary current. For example, if the system's maximum current is around 200 A, a 200:5 CT (40 CT) is chosen to step this down to 5 A for measurement devices.

Measured values​

Measured ValueKey / Path
CurrentE_ENERGY_METER.METER_2.CURRENT.MEASUREMENTS
VoltageE_ENERGY_METER.METER_2.VOLTAGE.MEASUREMENTS
PowerE_ENERGY_METER.METER_2.POWER.MEASUREMENTS
FrequencyE_ENERGY_METER.METER_2.FREQUENCY.MEASUREMENTS
Energy InE_ENERGY_METER.METER_2.ENERGY_IN.MEASUREMENTS
Energy OutE_ENERGY_METER.METER_2.ENERGY_OUT.MEASUREMENTS
Voltage L1E_ENERGY_METER.METER_2.VOLTAGE_L1.MEASUREMENTS
Voltage L2E_ENERGY_METER.METER_2.VOLTAGE_L2.MEASUREMENTS
Voltage L3E_ENERGY_METER.METER_2.VOLTAGE_L3.MEASUREMENTS
Current L1E_ENERGY_METER.METER_2.CURRENT_L1.MEASUREMENTS
Current L2E_ENERGY_METER.METER_2.CURRENT_L2.MEASUREMENTS
Current L3E_ENERGY_METER.METER_2.CURRENT_L3.MEASUREMENTS
Power L1E_ENERGY_METER.METER_2.POWER_L1.MEASUREMENTS
Power L2E_ENERGY_METER.METER_2.POWER_L2.MEASUREMENTS
Power L3E_ENERGY_METER.METER_2.POWER_L3.MEASUREMENTS