IPEM Plus is a powerful ATM90E36 Smart Home and Industry Automation Board, and Kit.

Self-contained ESP32-C5 based IoT monitoring board. Ideal for local, or remoting, monitoring requirements.
Provides easy connectivity to Wi-Fi connections, 2.4GHz or 5GHz, plus Bluetooth, Thread and Zigbee. In addition, you may also use the inbuilt LoRa Radio IoT 850 MHz through to 930 MHz.
Has been designed to easily monitor, and offer a flexible interface too, a whole range mains power energy installations.

Using its 2.4GHz and 5GHz Wi-Fi, Thread and Zigbee ESP32-C5 radio module, you can use the IPEM Plus to connect ta whole range of Smart Monitoring applications and projects.

Extending further, the built-in LoRa radio opens up long range and remote monitoring.

IPEM Continuity

Following in the footsteps of the original popular IPEM boards, this IPEM Plus is the latest in IoT Mains Energy Monitoring for Home and Industry Automation.

IPEM Plus is the replacement to the original IPEM boards

Compare Energy Monitors

This table compares the different DitroniX Power Energy Monitors.

Information and Wiki

Full information and Wiki is available on the DitroniX GitHub pages

Current Monitoring and Interfaces

Expanding the mains current sensors, either CT Clamps, or Rogowski Current Transformers, maybe connected. This allows for IPEM Plus to be used for both lower current Home systems and Industrial or commercial installations, which require higher current monitoring in hundreds of Amps.

The accurate Atmel ATM90E36 is used for Enhanced Poly-Phase High-Performance Wide-Span Energy Metering, with fast SPI data communications to an Espressif ESP32-C5 MCU.
The board can safely monitor a range of mains AC circuits, from Single phase, Split or Dual phase (such as USA), and both types of Three phase, Star and Delta. Full 50 Hz and 60 Hz.
An onboard accurate 16bit ADC allows for monitoring of DC voltages up to 80V.
The RS485 port allows interfacing to other local or remote sensors and monitors.
Accurate Real Time Clock DS3231SN, with Battery Backup Option.
A galvanically isolated OPTO output can be used to safely connect or drive a range of external systems or devices.
Two expansion ports, SPI and I2C, facilitate an optional display panel
MicroSD card, for buffering or logging data. This is mounted in the display panel.
The IPEM Plus has been designed to be compact, with an option to fit into a DIN enclosure, for cabinet or rack installations.

Safety First

As with all our boards, safety is paramount, with AC sensing being from lower voltage inputs, through galvanically isolated mains transformers. Examples are bell transformers. This allows the IPEM Plus to fully safely function at voltages below 20V.

AC Current Monitoring

AC Mains Current on the IPEM Plus, is safely monitored using an inductive non-direct connection method.

IPEM Plus has selectable inputs to be able to use either:

CT (Current Transformer) – Home and Office
- This typically is by using a CT (Current Transformer), Current Clamp which can measure up to around 100A. This normally is a split core, such as using the popular YHDC SCT-013 100A-50mA.

Split core current transformers, or Rogowski – Commercial and Industrial
- For for larger solar farms, commercial and industrial currents, heavy duty split core current transformers, or Rogowski.
- The advantages of Rogowski coils, is that that are flexible air-core sensors, providing a wider, non-saturating range, ease of installation, and excellent high-frequency response.6

Further information in Current Monitoring can be found here

AC Voltage Monitoring

All AC Mains is safely and galvanically isolated using a low voltage transformer. Examples are bell transformers.

Supports AC Monitoring Around The World

Europe and UK which typically is 230 V @ 50 Hz
- With ranges around 216 V to 253 V
USA and Canada which typically is 120 V or 230 V @ 60 Hz
- With ranges around 114 V to 126 V
Japan which typically is 100 V @ 50 Hz or 60 Hz
- Eastern Japan is 50 Hz, and Western Japan is 60 Hz
World typically is 220V-240 V @ 50 Hz

Further information in AC Voltage Monitoring can be found here

LoRa Long Range IoT Data Radio Integration

In addition, to compliment the powerful C5 radio, the IPEM Plus has an onboard LoRa SX1262 Transceiver Radio.

This allows IPEM Plus to be also used on remote Power Energy Monitoring projects, using the integrated LoRa and LoRaWan long range wireless network. This includes networks such as TTN, Meshtastic, Helium and ChirpStack.

The LoRa radio module operates from 850 MHz through to 930 MHz, so providing worldwide capability. This uses the LoRa module E22-900M22S, incorporating the Semtech SX1262.

Example bands:

AS923 (AS1) band (920-923 MHz) in Japan, Malaysia, Singapore
AS923 (AS2) band (915–928 MHz) in Asia
AU915 band (915–928 MHz) in South America
CN779 band (779-787 MHz) in China
EU868 band (863–870 MHz) in Europe
IN865 band (865-867 MHz) in India
KR920 band (920-923 MHz) in Korea
RU864 band (864-870 MHz) in Russia
US915 band (902–928 MHz) in North America

LoRa Long Satellite IoT

The IPEM Plus LoRa Wireless includes the expanded Satellite IoT range, enabling direct-to-satellite IoT connectivity, with suitable installation antenna.

Options

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