Smappee MID 100A SERIES DIN Rail Smart Meters

1 Introduction

This document provides operating, maintenance, and installation instructions for the Smappee MID 100A SERIES DIN rail smart meters. These units measure and display characteristics of single-phase two-wire (1p2w), three-phase three-wire (3p3w), and three-phase four-wire (3p4w) electrical networks. Key measured parameters include voltage (V), frequency (Hz), current (A), power (kW/kVa/kVar), and import, export, and total energy (kWh/kVarh). The meters can also measure maximum demand current and power over preset periods up to 60 minutes.

These units are rated for a maximum of 100A direct operation and do not require external current transformers (CTs). They feature built-in pulse, RS485 Modbus RTU, and Mbus outputs. Configuration is password protected.

1.1 Unit Characteristics

The Smappee MID 100A SERIES meters include models such as the i1-EN3-1, which measures kWh/kVarh, kW/kVar, kVA, Power (P), Frequency (F), Power Factor (PF), Demand (dmd), Voltage (V), Current (A), and Total Harmonic Distortion (THD%), with pulse/Modbus output and tariff capabilities.

1.2 RS485 Serial Modbus RTU

The RS485 serial port utilizes the Modbus RTU protocol, enabling remote monitoring and control of the unit. Setup screens are available for configuring the RS485 port parameters.

1.3 Mbus

The Mbus port uses the EN13757-3 protocol for remote monitoring and control, with dedicated setup screens for configuration.

1.4 Pulse Output

Two pulse outputs are provided to signal measured active and reactive energy. Pulse output 2 for active energy has a fixed constant of 400imp/kWh and a fixed pulse width of 100ms. Configurable pulse output 1 defaults to 400imp/kWh with a 100ms pulse width, and its settings can be adjusted via the setup menu.

2 Start-up Screens

Upon power-up, the meter displays all segments for a display check. This is followed by the software version information. The unit then performs a self-test, indicating the result. After a brief delay, the screen displays the active energy interface, showing the total active energy in kWh.

3 Measurements

The meter's buttons are used for navigation and selection:

• [ESC]: Selects Voltage and Current display screens. In Set-up mode, acts as "Left" or "Back".
• [Up]: Selects Frequency and Power Factor display screens. In Set-up mode, acts as "Up".
• [Down]: Selects Power display screens. In Set-up mode, acts as "Down".
• [Enter]: Selects Energy display screens. In Set-up mode, acts as "Enter" or "Right".

3.1 Voltage and Current

Pressing the measurement selection buttons cycles through the following parameters:

• Phase to neutral voltages.
• Current on each phase.
• Phase to neutral voltage Total Harmonic Distortion (THD%) for the 2nd to 19th harmonics.
• Phase Current THD% for the 2nd to 19th harmonics.

3.2 Frequency, Power Factor, and Demand

Pressing the measurement selection buttons cycles through:

• Frequency and Power Factor (total).
• Power Factor of each phase.
• Maximum Power Demand.
• Maximum Current Demand.

3.3 Power

Pressing the measurement selection buttons cycles through:

• Instantaneous Active Power in kW.
• Instantaneous Reactive Power in kVar.
• Instantaneous Volt-Amps in kVA.
• Total kW, kVarh, kVA.

3.4 Energy Measurements

Pressing the measurement selection buttons cycles through:

• Import active energy in kWh.
• Export active energy in kWh.
• Total active energy in kWh.
• Import reactive energy.
• Export reactive energy.
• Total reactive energy.

Note: Date and time can only be set via RS485 communication.

4 Set-up

To enter set-up mode, press and hold the [M] button for 3 seconds until the password screen appears. Setup is password protected; the default password is 1000. Press [M] for 3 seconds to confirm the password. An incorrect password entry will display "PASS Err". To exit set-up mode, repeatedly press the [ESC] button until the measurement screen is restored.

4.1 Set-up Entry Methods

Some menu items require a four-digit number entry (e.g., password), while others require selection from a list of options (e.g., supply system).

4.1.1 Menu Option Selection

1. Use the [M] and [P] buttons to scroll through menu options.
2. Press [E] to confirm a selection.
3. If an item flashes, it can be adjusted using the [M] and [P] buttons.
4. After selecting an option, press [E] to confirm. The [SET] indicator will appear.
5. To return to a higher menu level after setting a parameter, press [ESC]. The [SET] indicator will be removed.
6. After completing all settings, press [ESC] repeatedly to return to the main measurement screen.

4.1.2 Number Entry Procedure

For number entry (like passwords), digits are set individually from left to right:

1. The current digit flashes and is set using the [M] and [P] buttons.
2. Press [E] to confirm each digit setting. The [SET] indicator appears after the last digit is set.
3. After setting the last digit, press [E] to exit the number setting routine. The [SET] indicator will be removed.

4.2 Change Password

Navigate to the "Change Password" option using [M] and [P], then press [E]. The new password screen will appear with the first digit flashing. Use [M] and [P] to set the digit, then press [E] to confirm. Repeat for the remaining three digits. After the last digit, [SET] will show. Press [E] to exit and return to the Set-up menu.

4.3 Supply System

The default setting is 3-Phase 4-Wire (3P4). This section allows setting the electrical system type. From the set-up menu, select "Supply System" using [M] and [P]. Press [E] to enter the selection routine where the current selection flashes. Use [M] and [P] to choose the required system: 1P2(W), 3P3(W), or 3P4(W). Press [E] to confirm; the [SET] indicator will appear. Press [ESC] to exit and return to the main set-up menu.

4.4 Backlit Set-up

The backlight duration is settable, with a default of 60 minutes. If set to 5, the backlight turns off after 5 minutes of inactivity. From the set-up menu, select "Backlit" using [M] and [P]. Press [E] to enter the selection routine; the current time interval flashes. Options are: 0 (always on), 5, 10, 30, 60, 120 minutes. Use [M] and [P] to select the interval, then press [E] to confirm.

4.5 Communication

The RS485/Mbus port supports Modbus RTU protocol. Parameters are selected via the front panel. From the set-up menu, select "Communication" using [M] and [P]. Press [E] to enter the selection routine; the current setting flashes. Use [M] and [P] to choose the Modbus address (001 to 247). Press [E] to confirm and [ESC] to return to the main set-up menu.

4.6 Demand Integration Time (DIT)

This setting defines the period in minutes over which current and power readings are integrated for maximum demand measurement. Options include 0, 5, 8, 10, 15, 20, 30, 60 minutes. From the set-up menu, select "DIT" using [M] and [P]. Press [E] to enter the selection routine; the current time interval flashes. Use [M] and [P] to select the desired time. Press [E] to confirm; the [SET] indicator will appear. Press [ESC] to exit and return to the menu.

4.7 CLR (Clear Maximum Demand)

This function resets the maximum demand value for current and power. From the set-up menu, select the "CLR" option using [M] and [P]. Press [E] to enter the selection routine; the "MD" value will flash. Press [E] to confirm the setting and [ESC] to return to the main set-up menu.

4.8 Pulse Output Configuration

This section allows configuring Pulse Output 1 to generate pulses representing defined amounts of active or reactive energy. Options include Total kWh/Total kVarh, Import kWh/Export kWh, and Import kVarh/Export kVarh. From the set-up menu, select "Pulse Output" using [M] and [P]. Press [E] to enter the selection routine; the unit symbol flashes. Use [M] and [P] to choose kWh or kVarh. Press [E] to confirm and [ESC] to return to the main set-up menu.

4.8.1 Pulse Rate

Set the energy represented by each pulse. Rates can be set to 1 pulse per dFt (default, 2.5 Wh/Varh), 0.01 = 10 Wh/Varh, 0.1 = 100 Wh/Varh, 1 = 1 kWh/kVarh, 10 = 10 kWh/kVarh, or 100 = 100 kWh/kVarh. From the set-up menu, select "Pulse Rate" using [M] and [P]. Press [E] to enter the selection routine; the current setting flashes. Use [M] and [P] to choose the pulse rate. Press [E] to confirm and [ESC] to return to the main set-up menu.

4.8.2 Pulse Duration

The pulse width can be selected as 200ms (non-MID versions only), 100ms (default), or 60ms. From the set-up menu, select "Pulse Width" using [M] and [P]. Press [E] to enter the selection routine; the current setting flashes. Use [M] and [P] to choose the pulse width. Press [E] to confirm and [ESC] to return to the main set-up menu.

5 Specifications

5.1 Measured Parameters

The unit can monitor and display parameters for single-phase two-wire (1p2w), three-phase three-wire (3p3w), or three-phase four-wire (3p4w) systems.

5.1.1 Voltage and Current

• Phase to neutral voltages: 176 to 276V a.c. (not for 3p3w supplies).
• Voltages between phases: 304 to 480V a.c. (3p supplies only).
• Percentage total voltage harmonic distortion (THD%) for each phase to Neutral (not for 3p3w supplies).
• Percentage voltage THD% between phases (three-phase supplies only).
• Current THD% for each phase.

5.1.2 Power Factor, Frequency, and Maximum Demand

• Frequency in Hz.
• Instantaneous Power: Power (0 to 99999 W), Reactive Power (0 to 99999 Var), Volt-Amps (0 to 99999 VA).
• Maximum demanded power since last Demand reset.
• Power Factor.
• Maximum neutral demand current (for three-phase supplies only) since the last Demand reset.

5.1.3 Energy Measurements

• Import active energy: 0 to 999999.99 kWh.
• Export reactive energy: 0 to 999999.99 kVarh.
• Total active energy: 0 to 999999.99 kWh.
• Total reactive energy: 0 to 999999.99 kVarh.

5.2 Measured Inputs

Voltage inputs are via a 4-way fixed connector with 25mm² stranded wire capacity for single-phase two-wire (1p2w), three-phase three-wire (3p3w), or three-phase four-wire (3p4w) unbalanced systems. Line frequency is measured from L1 voltage or L3 voltage.

5.3 Interfaces for External Monitoring

Three interfaces are provided:

• RS485/Mbus communication channel, programmable via protocol remotely (not for SDM630-Pulse V2).
• Pulse output 1 (configurable) indicating real-time measured energy.
• Pulse output 2 (non-configurable), fixed with active kWh, constant 400imp/kWh.

Modbus/Mbus configuration (baud rate, etc.) and pulse relay output assignments are configured through the set-up screens.

5.3.1 Pulse Output Details

Pulse output can be set to generate pulses for kWh or kVarh. Rates include: dFt = 2.5 Wh/Varh (default), 0.01 = 10 Wh/Varh, 0.1 = 100 Wh/Varh, 1 = 1 kWh/kVarh, 10 = 10 kWh/kVarh, 100 = 100 kWh/kVarh. Pulse width options are 200ms, 100ms (default), or 60ms.

5.3.2 RS485/Mbus Output for Communication

For Modbus RTU, configurable RS485 parameters include:

• Baud rate: 2400, 4800, 9600, 19200, 38400.
• Parity: none, odd, even.
• Stop bits: 1 or 2.
• RS485 network address (nnn): 001 to 247.

For the Modbus/Mbus protocol document, please contact Smappee.

5.4 Accuracy

• Voltage: 0.5% of range maximum.
• Current: 0.5% of nominal.
• Frequency: 0.2% of mid-frequency.
• Power factor: 1% of unity (0.01).
• Active power (W): ±1% of range maximum.
• Reactive power (VAr): ±1% of range maximum.
• Apparent power (VA): ±1% of range maximum.
• Active energy (Wh): Class 1 IEC 62053-21.
• Reactive energy (VARh): Class B EN50470-3.
• Response time to step input: 1s, typical, to >99% of final reading, at 50 Hz.

5.5 Reference Conditions of Influence Quantities

Influence quantities affect measurement errors. Accuracy is verified under nominal conditions:

• Ambient temperature: 23°C ± 2°C.
• Input frequency: 50 Hz (MID), 50 or 60Hz ±2% (non-MID).
• Input waveform: Sinusoidal (distortion factor < 0.005).
• Magnetic field of external origin: Terrestrial flux.

5.6 Environment

• Operating temperature: -25°C to +55°C*.
• Storage temperature: -40°C to +70°C*.
• Relative humidity: 0 to 95%, non-condensing.
• Altitude: Up to 2000m.
• Warm-up time: 1 minute.
• Vibration: 10Hz to 50Hz, IEC 60068-2-6, 2g.
• Shock: 30g in 3 planes.

*Maximum operating and storage temperatures are in the context of typical daily and seasonal variations.

5.7 Mechanics

• DIN rail dimensions: 72x100mm (WxH) per DIN 43880.
• Mounting: DIN rail (DIN 43880).
• Sealing: IP51 (indoor).
• Material: Self-extinguishing UL94 V-0.

5.8 Manufacturer Declaration

Smappee n.v. declares under its sole responsibility that the polyphase multifunction electrical meter "SMAPPEE MID 100A series" corresponds to the production model described in the EU-type examination certificate and meets the requirements of Directive 2014/32/EU. EU type examination certificate number: 0120/SGS0462. Identification number of the Notified Body: NB0120.

6 Dimensions

The unit has a width of 72mm, a height of 100mm, and a depth of 58.7mm, designed for DIN rail mounting.

7 Wiring Diagram

The meter provides interfaces for external monitoring. The wiring configurations for different systems are as follows:

7.1 Single Phase Two Wires (1P2)

Connections are made to terminals:

• Terminal 1: L1 (Line 1)
• Terminal 2: N (Neutral)
• Terminal 3: Voltage/Current Input
• Terminal 4: Voltage/Current Input

7.2 Three Phase Three Wires (3P3)

Connections are made to terminals:

• Terminal 1: L1 (Line 1)
• Terminal 2: L2 (Line 2)
• Terminal 3: L3 (Line 3)
• Terminal 4: Voltage/Current Input

7.3 Three Phase Four Wires (3P4)

Connections are made to terminals:

• Terminal 1: L1 (Line 1)
• Terminal 2: L2 (Line 2)
• Terminal 3: L3 (Line 3)
• Terminal 4: N (Neutral)
• Terminal 5: Voltage/Current Input
• Terminal 6: Voltage/Current Input
• Terminal 7: Voltage/Current Input
• Terminal 8: Voltage/Current Input

Note: The diagrams show terminal blocks for voltage inputs (U/I) and phase connections (L1, L2, L3, N).

Safety Warnings

[!] Risk of Danger: These instructions contain important safety information. Read them before starting installation or servicing of the equipment.

[⚡] Caution: Risk of Electric Shock.

Important safety information is also contained in the Maintenance section. Familiarize yourself with this information before attempting installation or other procedures.

Manufacturer: Smappee n.v.

Address: Evolis 104, 8530 Harelbeke, Belgium

Contact: info@smappee.com | www.smappee.com

Certifications: CE, ROHS, MID