# Electrolyser 2.1 Rev A. (EL 2.1 Rev A.)

Enapter’s patented anion exchange membrane (AEM) electrolyser is a standardized, stackable and flexible system to produce on-site hydrogen. The modular design – paired with advanced software integration – allows set up in minutes and remote control and management. Stack this electrolyser to achieve the required hydrogen flowrate.

# πŸ“– Resources

Rev. Availability Datasheets Owner's Manuals Quick Start Guides Battery Limits CAD Drawings Air-cooled Liquid-cooled Alternating Current Direct Current Narrow Body
EL 2.1 Rev A. Certified EN EN EN EN 3D STP
3D IGS
X X
EL 2.1 LC Rev A. Certified EN EN EN EN 3D STP
3D IGS
X X
EL 2.1 NB DC Rev A. Prototype EN EN EN 3D STP
3D IGS
X X X

# πŸ“Έ Images

Front Right Side Left Side Isometric
EL 2.1 Rev A. Download Download Download Download
EL 2.1 Rev A.
Narrow Body
Download Download Download
EL 2.1 Rev A.
Direct Current
Download Download

# 🚦 Status LEDs Indications

Action Description LED
Power on The device will turn on as soon as the required input voltage is supplied to the EL2.1 and perform a startup self-check. Red, yellow & green blink thrice
Stand-by (Idle state) The device is idle, waiting for the start of production. Red, yellow & green are off
Stand-by (Max pressure state) The device reached maximum pressure (normally 35 bar) and will resume hydrogen production automatically when the restart output pressure setpoint is reached. Green blinking
Steady The device in steady state. Green steady
Button press When the start-stop button is pressed. Red, yellow & green blink once
Factory Settings Reset Simultaneously pressing the start-stop button and power up the device will activate Factory Settings Reset. Running fire (each LED blinks after another)
Maintenance mode The device is in maintenance mode. Yellow steady
Locate device When locate device is enabled via remote control. Red, yellow & green blinking
Warning Heads-up event which should be taken into account to avoid Error or Fatal Error. Yellow Blinks
Error System Stopped. Recoverable error. Red Blinks
Fatal Error System stopped. Unrecoverable error. Hardware repair required. Please contact Enapter support. Red and Yellow Blinks
Panic System stopped. Unrecoverable error. Please contact Enapter support. Red steady with green steady (hardware problem) or yellow steady (software problem)

# πŸ’§ Refilling and Draining

# The First Refilling

Before DI water is added automatically, the electrolyser needs to be initially filled with electrolyte.

Materials required:

  • Safety Glasses
  • Nitrile Gloves
  • Electrolyte bag with 3.6L of 1% KOH solution
  • Threaded puncture seal cap
  • Supplied refilling pipe
  • Mobile phone with installed Enapter App

Follow these steps to complete the first refilling of the electrolyte:

  • Step 1. Put on PPE. The minimum required equipment are safety goggles to protect from splashes and nitrile gloves. Ensure your working area is clean to avoid chemical contamination and potential exposure hazards.
  • Step 2. The electrolyser must be in Maintenance mode and the electrolyte tank must be empty. You can check that by looking at the status LSL102D_in (Low electrolyte level) in the Cloud: it is β€žfalseβ€œ (red) when the tank is empty. If not - contact Support. Do not leave the device powered and unattended while in Maintenance mode.
  • Step 3. Switch the original cap from the electrolyte bag to the threaded puncture seal cap. Connect refilling pipe to the electrolyte bag. Pull and hold the movable part of the connector and connect it to the electrolyte bag.
    Refilling Pipe Connection
  • Step 4. Fully insert the refilling pipe into the FILL/DRAIN port.
  • Step 5. Carefully raise the bag with the filling solution above the device. Never lift the electrolyte above your eye level. The solution will start filling the internal electrolyte tank immediately. If this does not occur, ensure the O2 VENT line is not obstructed.
  • Step 6. Follow the steps provided by the Mobile Phone App: pour until the App shows a full tank.
  • Step 7. Disconnect refilling pipe from the FILL/DRAIN port by pressing down the button on the port. Press the button and pull the connector out of the port.
  • Step 8. Confirm finish of refilling by pressing the Exit button in the App.

You are done! The device is ready to be used and no other action is required. The EL 2.1 will automatically refill DI water whenever it needs it.

# Overfilling

During the First Refilling, the electrolyte can exceed the maximum level - overfilling. This will make the electrolyser go into error - if this happens, you need to pour off the electrolyte back to the electrolyte bag completely and follow these steps:

  • Step 1. Put the electrolyte bag down and pour off the electrolyte completely.
  • Step 2. Turn OFF an ON the breaker on the front panel of the electrolyser.
  • Step 3. Return to the First Refilling.

Starting from firmware 1.6.0 the electrolyser will not go into error. You need to put the bag down and pour off the excess electrolyte back.

# Draining

The module must be drained for transport, installation, and before the routine changing of the electrolyte in the electrolyser to prolong system life.

Materials required:

  • Safety Glasses
  • Nitrile Gloves
  • Clean 5L container
  • Supplied draining pipe
  • Mobile phone with installed Enapter App

Follow these steps to drain the electrolyser:

  • Step 1. Put on PPE. The minimum required equipment are safety goggles to protect from splashes and nitrile gloves. Ensure your working area is clean to avoid chemical contamination and potential exposure hazards.
  • Step 2. Enable Maintenance mode using the Enapter App.
  • Step 3. Make sure the O2 VENT line is not obstructed.
  • Step 4. Prepare the container to catch the drained liquid and insert the end of the draining pipe into it.
  • Step 5. Fully insert the draining pipe into the FILL/DRAIN port. The solution will start pouring out immediately.
  • Step 6. Once the solution stops pouring, disconnect the draining pipe from the FILL/DRAIN port by pressing down the button on the port. Press the button and pull the connector out of the port.

Warning

Thermal hazard! Avoid contact with the heated electrolyte solution.

# πŸ’¨ Blowdown Routine

This automatic routine will appear if the electrolyser has not been in STEADY or RAMP UP mode for a certain period of time; in other words, if the electrolyser has not been in use for some time. The relief valve on the outlet of the electrolyser which is a mechanical spring valve, not being in use it might not work properly when the 29 bar is reached and might need extra pressure to open the first time.

There will be a warning that notifies when the routine starts: WARNING β€œWO_20”.

The Blowdown Routine doesn't interfere with the normal ramp up routine, but only makes some changes to the safety routine checks.

The Blowdown Routine can be enabled using Enapter Cloud.

# βš™οΈ Factory Settings Reset

Factory Settings Reset presented in EL 2.1 firmware 1.3.0 allows to reset device to factory settings.

To enable Factory Settings Reset user should simultaneously press the Start/Stop button and power up the device, then button should be pressed until LEDs blink running fire (each LED blinks after another) and released in 5 seconds. The electrolyser sends command to UCM to perform Factory Settings Reset. The electrolyser and UCM will be reset to Factory Default Settings.

There will be a warning if the Start/Stop button have not been released in 5 seconds: WARNING β€œWP_04”.

The electrolyser can be reset using Cloud command Factory Reset or Modbus Holding Register #9 - in this case only the electrolyser settings are reset to Factory Default Settings while UCM settings are saved.

After the Factory Settings Reset the electrolyser will move to Maintenance Mode if water level is low than "low level". If water level is more than "low level" the electrolyser will remain in Operation Mode.

# πŸ“ˆ Remote Monitoring and Control

# Introduction

EL2.1 Control The electrolyser EL 2.1 comes with pre-installed UCM (Universal Communication Module) that allows users to monitor the device. Over-the-air updates ensure that the latest protocols and security fixes are supported.

EL2.1 Dashboard Pre-installed UCM connects to the Enapter Gateway and send performance and error data to the Enapter Cloud. The data is stored in a time series database which displays it real-time on customizable dashboards.

EL2.1 Mobile Enapter’s mobile application ensures quick and easy installation of any energy system. Users can manage the EL 2.1 via the mobile app and will receive push notifications to warn of energy system issues.

# Network Requirements

# WI-Fi Requirements

  • 802.11a/b/g/n (2.4 GHz only)

  • 802.12 WEP, WPA, WPA2 Personal (Pre-shared key)

  • Wi-Fi client isolation must be disabled

Note

No captive portal or WPA2 Enterprise supported.

General Wi-Fi Note

The Enapter Cloud connection based on wireless communication and therefore the functionality can be affected with distance in between devices, obstructions between the devices and interference. Communication module inside the electrolyser works in station mode and utilizes Wi-Fi channel set in your infrastructure Wi-Fi router for used SSID. You are responsible to select the correct channel according to the local radio regulations.

# TCP/IP Network Requirements

Port Protocol Destination Host
(IP-Address / Range or Name)
80 TCP 193.9.249.0/24,
95.168.174.108,
95.168.174.212,
95.168.174.213
(api.enapter.com)
443 TCP 193.9.249.0/24,
95.168.174.108,
95.168.174.212,
95.168.174.213
(api.enapter.com)
123 UDP 193.9.249.0/24,
95.168.174.108,
95.168.174.212,
95.168.174.213
(ntp.enapter.com)
8883 TCP 193.9.249.0/24,
95.168.174.108,
95.168.174.212,
95.168.174.213
(mqtt.enapter.com)
1883 TCP 193.9.249.0/24,
95.168.174.108,
95.168.174.212,
95.168.174.213
(mqtt.enapter.com)

Note

Firewall must be stateful.

# Connecting your Electrolyser to Wi-Fi

To connect the EL 2.1 electrolyser to wireless networks, follow the steps in the iOS or Android Mobile Application guides below. Please note, the QR-code or preinstalled UCM's ID and PIN are required when connecting to Wi-Fi as well as credentials for the 2,4 GHz Wi-Fi network.

πŸ“— Enapter iOS Mobile Application Guide

πŸ“— Enapter Android Mobile Application Guide

During connection to Wi-Fi network the QR-code or preinstalled UCM's ID and PIN needed. The location for both of them is shown on pictures below.

Front view:

EL 2.1 Rev A. QR-code LocationEL 2.1 Rev A. Narrow Body QR-code Location

Rear view:

EL 2.1 Rev A. UCM ID LocationEL 2.1 Rev A. Narrow Body UCM ID Location

# πŸ’š Safety Heartbeat

This functionality increases safety in cases of loss of control by Enapter Gateway or any 3rd party Modbus master device.

Safety Heartbeat presented in EL 2.1 firmware v1.2.0 is a periodic signal generated by Enapter Gateway or any Modbus master device (i.e PLC) to indicate continuous connection with the electrolyser.

If the electrolyser does not receive the heartbeat in a time (heartbeat period) β€” the machine will normally shut down. Lose of the signal may happen when Gateway or PLC is powered off, when there is connection issue.

# EL 2.1 Heartbeat

To activate Heartbeat on the EL 2.1 you need to change Heartbeat parameters. To do it use Modbus Holding Register #4600 (for Modbus master) or #4602 (for Enapter Gateway).

Parameters:

Heartbeat_gatewaytimeout_s - timeout for Gateway Heartbeat in seconds. Default value = 0 (disabled).

Heartbeat_modbustimeout_s - timeout for Modbus Heartbeat in seconds. Default value = 0 (disabled).

This parameters can also be changed using Web GUI. Navigate to Configuration bar and set Heartbeat timeouts.

# Gateway Heartbeat

How to activate Safety Heartbeat on the Gateway:

  1. Connect to the Gateway - please check this page (opens new window).

  2. Configure Safety Heartbeat on the Gateway - please check this page (opens new window).

# Modbus Heartbeat

How to activate Safety Heartbeat using Modbus protocol - please check the example of Writing Heartbeat Modbus Timeout (opens new window).

# πŸ–₯️ Web GUI

# Getting Started

Enapter EL21 Web GUI (Graphical User Interface) is made for local control and monitoring using a web browser.

The electrolyser must be updated to firmware 1.6.0 or above.

Warning

Electrolyser Web GUI works over an insecure HTTP connection and was designed for usage in isolated Local Area Networks for Operation, Administration and Management. Please take into account that connection to public networks such as the Internet is not recommended for security reasons.

Chek out video describing main functionality of the Web GUI.

# Connections

Connect the electrolyser using one of the methods listed below.

# Single Electrolyser Connection
Web GUI - Connection 1 EL

Note

The DHCP server must be configured and enabled on the PC connected to the electrolyser.

# Single Electrolyser Connection With Router
Web GUI - Connecting 1 EL + Router

Note

The DHCP mode must be configured and enabled on the router connected to the electrolyser.

# Multiple Electrolysers Connection
Web GUI - Multiple Electrolysers Connection

Note

The DHCP mode must be configured and enabled on the router connected to electrolysers.

# Physical Connection Specification
Parameter Description
Cable CAT5 or CAT6 Ethernet cable with RJ45 connectors. Max Distance: 100 meters / 328 ft.
Speed 10/100BASE-T. An Ethernet network transmitting at 10 and 100 Mbps.

# Access The Web GUI

  1. Find the label with UCM ID and PIN code on the back panel of the electrolyser.
    Web GUI - Label
  2. Open the Web browser.
  3. There are two main ways to access the Web GUI.
  • Way 1. Use the UCM ID to create a link with .local hostname like http://UCM_ID.local.
    For example: http://02CCF660F6.local.
    Web GUI - UCM ID Link

Note

mDNS must be enabled to resolve .local hostname.
Use HTTP protocol.

Warning

There is an issue (opens new window) using WiFi and Windows to access the .local hostname. In case you can not access the Web GUI this way please use a local ethernet connection to the electrolyser or IP address as a hostname.

  • Way 2. Use the IP address of the electrolyser.
  1. In opened page enter UCM ID and PIN code.
    Web GUI - Log In
  2. Click on the Login button to access the Web GUI.

# Layouts

Enapter EL21 Web GUI has 6 main layouts:

Web GUI - Layouts

  1. The Header Toolbar
  2. Production Bar
  3. Events Bar
  4. Monitoring Sidebar
  5. Status Sidebar
  6. Main Configuration Bar

# The Header Toolbar

WEB GUI - The Header Toolbar

Parameter Description
Reboot Command to Reboot the device.
Locate Command to enable or disable the Locate device functionality.
When enabled red, yellow and green LEDs are blinking.
Logout Command to Logout from Web GUI.
Help Useful links:
1. Our customer service at support@enapter.com.
2. EL 2.1 Main Page.
3. This documentation.
4. Relevant Modbus Registry Table.

# Production Bar

WEB GUI - Production Bar

Parameter Description
Current H2 Production Rate Current hydrogen production rate corresponding to the percentage value. In NLh.
Current production rate can be set in Commands tab in Main Configuration Bar.
Outlet Pressure Outlet hydrogen pressure. In bar.

# Events Bar

WEB GUI - Events Bar

Parameter Description
Type Type of event.
Possible types of events:
1. Warning - Heads-up event which should be taken into account to avoid Error or Fatal Error.
2. Error - System Stopped. Recoverable error.
3. Fatal Error - System stopped. Unrecoverable error. Hardware repair required. Please contact Enapter support.
Code The code of all events can be found in Modbus TCP Interface.
Description The description of all events can be found in Modbus TCP Interface.

# Monitoring Sidebar

WEB GUI - Monitoring Sidebar

Parameter Description
State The main system state of the electrolyser.
Possible states:
1. None - The electrolyser is not started.
2. Maintenance - The electrolyser is in Maintenance Mode.
3. Expert - Special mode to config the electrolyser.
4. Error - The electrolyser has Error. Recoverable event.
5. Fatal - The electrolyser has Fatal Error. Unrecoverable event. Please contact Enapter Support.
6. IDLE - IDLE process.
7. Steady - Electrolysis process in progress.
8. Stand by - The electrolyser stops hydrogen production (max pressure reached).
9. Blowdown - Service process to blowdown the valves.
10. Curve - Service process to check the stack.
Stack Substate Possible Stack substates:
1. None - The electrolyser is not started.
2. Maintenance - The electrolyser is in Maintenance Mode.
3. IDLE - IDLE process.
4. Warmingup - Water heating in the water tank.
5. Hydration - Preparation of the stack for work.
6. Rampup1 - Preparation of the stack for work.
7. Rampup2 - Preparation of the stack for work.
8. Steady - Electrolysis process in progress.
9. Purge - Purge from accumulated moisture.
10. Rampdown1 - Preparation of the stack to turn off.
11. Rampdown2 - Preparation of the stack to turn off.
12. Maxpressure - The electrolyser stops hydrogen production (Stand by).
13. Halt - System inactivity.
Service Substate Possible Service substates:
1. None - The electrolyser is not started.
2. Maintenance - The electrolyser is in Maintenance Mode.
3. IDLE - IDLE process.
4. Blowdown - Blowdown process started.
5. Blowdown_stop - Blowdown process stopped.
6. Blowdown_restack - Preparation for hydrogen production after Blowdown.
7. Halt - System inactivity.
8. Calibration - System in Calibration Mode.
9. Curve_starting - Polarization Curve Routine started.
10. Curve_timeout - Polarization Curve Routine process.
11. Curve_data - Polarization Curve Routine process.
12. Curve_ready - Polarization Curve Routine process.
Refilling Substate Possible Refilling substates:
1. None - The electrolyser is not started.
2. IDLE - IDLE process.
3. Filling - Filling the water tank.
4. Draining - Draining the water tank
5. Maintenance - The electrolyser is in Maintenance Mode.
6. Koh_refilling - Electrolyte refilling started.
7. Koh_refilling_finish - Electrolyte refilling finished.
8. Forcefilling - Force filling started.
9. Initialfilling - Force filling on special start.
10. Halt - System inactivity.
Electrolyser Substate Possible Electrolyser substate:
1. Curve - Polarization Curve Routine process.
2. Blowdown - Blowdown process.
3. Halt - System inactivity.
4. Maintenance - The electrolyser is in Maintenance Mode.
5. IDLE - IDLE process.
6. Steady - Electrolysis process in progress.
7. Standby - The electrolyser stops hydrogen production (max pressure reached).
System Substate Possible System substates:
1. None - The electrolyser is not started.
2. Operation - System is operation
3. Maintenance - The electrolyser is in Maintenance Mode.
4. Expert - Special mode to config the electrolyser.
5. Fatal - The electrolyser has Fatal Error. Unrecoverable event. Please contact Enapter Support.
6. Error - The electrolyser has Error. Recoverable event.
Current Production Rate Current hydrogen production rate. In percent.
Current production rate can be set in Commands tab in Main Configuration Bar.
Inner Hydrogen Pressure Inner hydrogen pressure. In bar.
Outlet Hydrogen Pressure Outlet hydrogen pressure. In bar.
Water Inlet Pressure Pressure of the inlet water. In bar.
Water Inlet Pressure must be in the range 0.5 - 4 bar.
Board Temperature Temperature on the main board of the electrolyser. In Celsius.
Electrolyte Tank Temperature Temperature in the water tank of the electrolyser. In Celsius.
Water Tank Level Water level in the water tank of the electrolyser.
Possible water levels in the water tank:
1. Low - When the water level falls this level the electrolyser will go to Fatal Error.
2. Medium - Normal operation water level.
3. High - Maximum water level for normal operation.
4. Very High - The tank is overfilled. When the water level reaches this level the electrolyser will go to Fatal Error.
Electrolyte Age Number of day(s) passed since last electrolyte replacement procedure.

# Status Sidebar

WEB GUI - Status Sidebar

Parameter Description
State The main system state of the electrolyser.
The description of all possible states can be found in Monitoring Sidebar.
Status LEDs Indications For more information please check Status LEDs Indications.

# Main Configuration Bar

# Commands

WEB GUI - Commands

# Start / Stop

Remote Start or Stop hydrogen production.

# Locate ON / OFF

Command to enable or disable the Locate device functionality.

When enabled red, yellow and green LEDs are blinking.

# Maintenance Mode

Command to enable or disable Maintenance Mode.

Maintenance Mode is used to safely fill and drain the device, as well as to guide you through inspection and other routine maintenance tasks.

# Refilling

Refiling the electrolyser can be done by turning on the Maintenance Mode. The water tank must be empty or the electrolyte level must be less than Low.

When Maintenance Mode enabled and water level < Low you will switch to Electrolyte Refilling Wizard.

Follow steps in the Electrolyte Refilling Wizard to refill the electrolyser.

  • Step 1.
    Web GUI Refilling 1

  • Step 2.
    Web GUI Refilling 2

  • Step 3.
    Web GUI Refilling 3.1Web GUI Refilling 3.2Web GUI Refilling 3.3Web GUI Refilling 3.4
    Web GUI Refilling 3.5

  • Step 4.
    Web GUI Refilling 4

# Overfilling

During the Refilling, the electrolyte can exceed the Very High level - Overfilling.

In this case, you will switch to Overfilling Wizard.

Follow steps in the Overfilling Wizard to solve this issue.

Web GUI Overfilling
# Draining

Draining the electrolyser can be done by turning on the Maintenance Mode. The electrolyte level must be more than Low.

When Maintenance Mode enabled and water level > Low you will switch to Electrolyte Draining Wizard.

Follow steps in the Electrolyte Draining Wizard to drain the electrolyser.

  • Step 1.
    Web GUI Draining 1

  • Step 2.
    Web GUI Draining 2

  • Step 3.
    Web GUI Draining 3.1Web GUI Draining 3.2Web GUI Draining 3.3
    Web GUI Draining 3.4

  • Step 4. After the Electrolyte Draining Wizard you will automatically switch to the Electrolyte Refilling Wizard.

# Reboot

Command to Reboot the device.

# Force Water Refill

Command to enable Force Water Refilling.

This command is used to refill the water tank to the High level.

# Current Production Rate

Current hydrogen production rate. In percent.

To set Current Production Rate:

  • Tap on the Change button.
  • In the opened tab you can set the current production rate using range input or enter it using a keyboard.
  • Tap on the Apply button to set Current Production Rate.
  • Tap on the Cancel button to discard the changes.
  • Minimum production rate is limited to 60%. More information can be found here (opens new window).

# Configuration

WEB GUI - Configuration

# Default Production Rate

Default hydrogen production rate. In percent.

Default Production Rate unlike Current Production Rate will be saved after Reboot.

To set Default Production Rate:

  • Tap on the Change button.
  • In the opened tab you can set the current production rate using range input or enter it using a keyboard.
  • Tap on the Apply button to set Default Production Rate.
  • Tap on the Cancel button to discard the changes.
  • Minimum production rate is limited to 60%. More information can be found here (opens new window).
# Outer Pressure Limits

Pressure limits to stop and continue hydrogen production.

To set Outer Pressure Limits:

  • Tap on the Change button.
  • In the opened tab you can change Restart Outer Pressure and Max Outer Pressure.
  • Restart Outer Pressure - switches the electrolyser back to steady when pressure falls less this value. Must be < Max Outer Pressure.
  • Max Outer Pressure - reaching this pressure switches the electrolyser to stand by and stops hydrogen production. Must be < 37.5 bar and > Restart Outer Pressure.
  • Tap on the Apply button to set Outer Pressure Limits.
  • Tap on the Cancel button to discard the changes.
# Ethernet Settings

By default the DHCP is enabled.

If you want to change Ethernet settings please follow these steps:

  • Tap on the Change button.
  • In the opened tab you can change the following ethernet settings:
    • IP Address
    • Netmask
    • Gateway IP
  • Tap on the Apply button to change Ethernet settings.
  • Tap on the Cancel button to discard the changes.
# Safety Heartbeat

Safety Heartbeat is a periodic signal generated by Enapter Gateway or any Modbus master device (i.e PLC) to indicate a continuous connection with the electrolyser.

To set Safety Heartbeat for Enapter Gateway or any Modbus master device:

  • Tap on the Change button.
  • In the opened tab you can set Safety Heartbeat timeouts. The value must be in seconds.
  • Tap on the Apply button to set Safety Heartbeat timeouts.
  • Tap on the Cancel button to discard the changes.
  • To disable Safety Heartbeat for Enapter Gateway or any Modbus master device timeouts must be set to 0.

# System Parameters

WEB GUI - System Parameters

Parameter Description
Model Model of the electrolyser. Must be EL21.
Firmware Version Current firmware version of the electrolyser (Ex: 1.6.0-r2.release).
Firmware Build Unique ID Firmware build unique ID (Ex: 219560661).
Device ID Device ID - unique, non zero integer value (Ex: 2418578571).
Device UUID Device UUID - unique UUID (Ex: 00078000-2912-123B-B04E-999123543231).
Chassis Serial Number Chassis serial number, configured on the factory (Ex: AA2101019SPI).
Stack Serial Number Stack's serial number, configured on the factory (Ex: 23E21011PI).
Product Code Product code, defined efuses and configuration (Ex: ELE210535A2AXV01-03).
eFuse Board's configuration stored in one time programming memory (Ex: 2.0 R1.0).

# πŸ•ΈοΈ Dryer Control Network

# Introduction

The Dryer Control Network function is Smart Control for the Dryer using M2M (opens new window) communication between electrolyzers and the dryer via a wireless MESH network. This type of control allows to lower down energy consumption, reduce the possibility of operating errors and increase the safety.

The MESH network operates on the basis of the IEEE 802.11a/b/g/n standard at 2.4 GHz and allows you to connect up to 6 devices (1 Dryer and up to 5 Electrolysers). Devices automatically choose the master router in the network based on Wi-Fi signal strength to ensure the reliable communication.

Aside to intelligent control, Dryer Control Network allows to monitor and manage the Dryer from any Electrolyser in the MESH network using Modbus TCP interface. To learn more check the Latest Modbus TCP Interface paragraph for Dryer registers.

# How it works?

When Dryer Control Network is enabled, the Dryer will start only when at least one of the Electrolysers is reporting the Steady state. In all other cases the dryer will be automatically turned off. When you want to ensure that Dryer won't be started automatically you can stop it manually by pressing the button on the front panel or via the stop button in the cloud.

# Requirements

  • Dryer Firmware: 3.1 and later.
  • Electrolyser 2.1 Firmware: 1.5 and later.
  • Mobile Application: 2.11 and later.

Electrolysers and Dryer must be connected to the Cloud and available online.

# Enabling Dryer Control Network

To enable Dryer Control Network:

  1. Run Enapter App and navigate to your site Dashboard
  2. Select the Dryer from the list and click on Info button in the top right corner of the screen
  3. Click the Dryer Control Network menu item
  4. Click Create Control Network
  5. With a checkboxes select up to 5 Electrolysers which are physically connected to the Dryer.
  6. Click Create button and confirm it
  7. Wait while Network enabled on all devices

# Removing Dryer Control Network

To remove Dryer Control Network:

  1. Run Enapter App and navigate to your site Dashboard
  2. Select the Dryer from the list and click on Info button in the top right corner
  3. Click the Dryer Control Network menu item
  4. Click Delete Network and confirm removal
  5. Wait while Network is removed

# Limitations

General Wi-Fi Communication Note

The Dryer Control Network based on wireless communication therefore the functionality can be affected with distance in between devices, obstructions between the devices and interference. At the moment when this guide is written the MESH network utilizes the same Wi-Fi channel as the infrastructure Wi-Fi router used for Enapter Cloud connection. You responsible to select the correct channel according to the local radio regulations.

Factory Reset Note

When Dryer Control Network is enabled it is not possible to set up device (Electrolyser or Dryer) using Mobile App by scanning QR code without making Factory Settings Reset or Removing Dryer Control Network.

Wi-Fi SSID Change

In case you plan to move the systems to a new site location where different Wi-Fi SSID is used it is recommended to Remove Dryer Control Network in advance using Mobile Application while devices are still connected using existing Wi-Fi SSID to the Cloud.

In case your device is already Offline and it is not possible to use old Wi-Fi SSID you required to perform Factory Settings Reset. To learn how to make this - refer to the Factory Settings Reset paragraph of this manual.

Dryer Control Network and dryer-management-rule Plugin Compatibility

The Dryer Control Network is incompatible with dryer-management-rule plugin on the Gateway. It is required to disable plugin before activation of the Dryer Control Network.

# πŸ”Œ Modbus TCP Interface

In case you want to monitor and manage your device with Modbus TCP interface check out the latest registers map guide and use cases:

Warning

In order to support multiple Modbus TCP masters connections firmware version must be updated to 1.5.1 or above

Warning

Modbus TCP works over an insecure connection and was designed for usage in isolated Local Area Networks for Operation, Administration and Management. Please take into account that connection to public networks such as the Internet is not recommended for security reasons.

# Examples

The sample Modbus TCP Python scripts are available at our Github Page (opens new window) under Apache 2.0 License.

# πŸ’» Firmware

# Firmware 1.7.0 ✨

# Previous Versions

# Firmware 1.6.1

# Firmware 1.6.0

# Firmware 1.5.2

# Firmware 1.5.1

# Firmware 1.5.0

# Firmware 1.4.0

# Firmware 1.3.0

# Firmware 1.2.3

# Firmware 1.2.1

# Firmware 1.2.0

# Firmware 1.1.2

# Firmware 1.1.1

# Firmware 1.1.0

# Firmware 1.0.2

# Firmware 1.0.1

# Firmware 1.0.0

# How to Update the Firmware?

To update the firmware electrolyser must be connect to the Enapter Cloud (opens new window). How to do it please check here.

# Updating the Firmware Using Enapter Cloud

  1. Login into Enapter Cloud (opens new window).
  2. Open your Site navigate to the electrolyser's page you want to update.
  3. At the left sidebar click on the Update Firmware button at the Firmware Info section.
  4. In opened window click on the Check for updates button.
  5. If you have the latest firmware version you will see You have the latest version.
  6. If update is available you will see Change Log.
  7. Click the Update button to update the firmware.
  8. Wait until the update complete. This can take a while.

# Updating the Firmware Using Enapter Mobile App

  1. Login into Enapter Mobile App.
  2. Open your Site and navigate to the electrolyser's page you want to update.
  3. Navigate to the About tab (ℹ️) and click on the Firmware button.
  4. In opened tab click on the Check for Updates button.
  5. If you have the latest firmware version you will see You have the latest version.
  6. If update is available you will see Change Log.
  7. Click the Update button to update the firmware.
  8. Wait until the update complete. This can take a while.

# Updating the Firmware Using Electrolyser Web GUI

Note

Firmware updates with Electrolyser Web GUI are supported on Firmware versions 1.7.0 and higher.

Important

Never upload firmware files recieved from untrusted source. Enapter is not responsible for any missbehaviour or harm caused by untrusted firmware usage or violating update instructions. Contact Enapter Customer Support with any questions and to ensure that correct firmware files are used.

It is always recommended to update Electrolyser firmware using Enapter Cloud and Mobile Applicion. Hover these types of update require stable internet connection. In cases when it is not possible to have your electrolyser connected to Enapter Cloud it is possible to update Electrolyser firmware using Web GUI.

To perform update:

  1. Save and unzip the recieved firmware package to local hard drive of your computer the way you have two files named fw_ucm_0xXXXX_X.X.X.ena and fw_cbd_0xXXXX_X.X.X.ena next to each other.
  2. Open Web GUI of your electrolyser.
  3. Navigate to System Parameters tab.
  4. Click Update link. The Upload Firmware screen will appear.
    Web GUI - Upload Firmware
  5. Drag and drop or Select file with UCM firmware named fw_ucm_0xXXXX_X.X.X.ena from your local hard drive.
  6. On the screen you will see the confirmation that firmware file is recognized by showing up the UCM Firmware version.
  7. Press Upload button and wait the process to finish with Upload and Installation steps. It will take up to 10 minutes. Don't turn electrolyser off and don't close the browser.
  8. Press Done after recieving the message UCM firmware was updated successfully.
  9. Drag and drop or Select file with UCM firmware named fw_cbd_0xXXXX_X.X.X.ena.
  10. On the screen you will see the confirmation that firmware file recognized by showing up the Control Board Firmware version.
  11. Press Upload button and wait the process to finish with Upload and Installation steps. It will take up to 10 minutes. Don't turn electrolyser off and don't close the browser.
  12. Press Done after you will recieve the message Control Board was updated successfully.

Note

If Site has Enapter Gateway it needs to be updated to version 1.8.9 or higher.

Note

Make sure you have physical access to the device before starting the update process.

Warning

Do not power off the device during the firmware update.

Warning

Remove Dryer Control Network before updating the firmware.

# 🐞 Known Hardware Bugs

  • Electrostatic discharge into the Wi-Fi antenna, may cause crash Ethernet and modbus.

    Solution: Reboot the electrolyser using cloud (find the device in Enapter Cloud (opens new window) and execute Reset command (Commands > Electrolyser > Reset) or do system power restart (turn off it and restore power back).