Fortress Power Guardian User manual
Introduction
Guardian – IoT Gateway
Installation and Operation Manual
The Guardian hub is a monitoring and controls device for your Fortress eFlex and eVault MAX
battery products. It uploads your Fortress batteries’ data to the cloud over Wi-Fi so that you can
view key information on your battery system in the Guardian companion app such as charged
percentage, time till full charge, voltage, current, and more. The companion app allows for a
smoother tech support experience by featuring a chat widget where you can contact support
directly. Additionally, the app automatically tracks your Fortress battery warranties once they are
connected to the Guardian hub.
All information in this document is subject to copyright and other intellectual property rights of
Fortress Power, LLC. and its licensors. This material may not be modified, reproduced or copied,
in whole or in part, without the prior written permission of Fortress Power, LLC. and its
licensors. Additional information is available upon request. All other trademarks contained in
this document are the property of their respective owners and their use herein does not imply
sponsorship or endorsement of their products or services. The unauthorized use of any trademark
displayed in this document is strictly prohibited.
©2022 Fortress Power LLC. All rights reserved.
Required Tools + Materials
• Fortress Power eFlex or eVault MAX battery
• An Android or Apple Phone
• Stable Wi-Fi connection
Material List
120V AC Power supply
120V AC -> DC 24V / 2A adapter (outer diameter 5.5 / inner diameter 2.5 )
48V DC power cable (from battery)
(included power cable is pre-crimped with ring terminals for
battery)
Battery-Guardian Communication Cable
pre-wired for connection to both eFlex and eVault battery units
(same cable for both models).
Physical Features
•IP23 Rated
•Two power supply sources
-120V AC/DC wall socket adapter
-48V DC input for use with FlexTower or DuraRack racking system
•Connects to home internet via Wifi or hardwired ethernet cable
•CANbus communication to Fortress batteries
•SD card input
•Reset Button
•Status Lights
•Tools and Materials
•
Download the App
Commission the Fortress Guardian hub using the Fortress Power Guardian App.
Apple:
https://apps.apple.com/us/app/fortress-power-guardian/id1632364415
Google Playstore:
https://play.google.com/store/apps/details?id=com.app.fortresspower
Specifications
Electrical Specifications
Power Consumption
5W – 24V@1A power supply.
AC/DC Adapter
120V / 5A 24V DC 5.5mm
Supported Communication Types
1x MODBUS/TCP, 2x MOBUS/RTU, 2xCAN 2.0
Operation Frequency
2.4Ghz
Antennae
SMA standard connector
Environment
Indoor or inside a box
Local Communication
not yet available / 2023 eta
Physical Specifications
Resetting the Guardian Hub
The Guardian has a reset button that can be pressed for 5 seconds to restore the Guardian to
factory settings. Only use this function if directed by technical support. You can use the
included pin to press the button.
Weight (device only)
0.8 lbs. – 0.4kg
Dimensions (device only) (W x H x D)
7.25 ‘’ x 6 ’’ x 1.25 ‘’
Shipping package dimensions
Not known at this time
Shipping package weight
Not known at this time
Housing/
IP23 /
Mounting system
Din Rail Mount
Status Display LEDs
From top to bottom:
power,
cloud connection,
Bluetooth or Wi
-Fi connection,
serial communication with battery,
error signal
Installing the Guardian
The Guardian monitoring hub should be installed near the battery bank. When building a custom
communication cable, stay within 50’ of the battery units. If the installation is outdoors, you
must install the Guardian inside a plastic junction box. Alternately, the Guardian can be installed
inside the Fortress FlexTower or DuraRack racking system.
The Guardian is din-rail mountable and includes a din rail which can be mounted to an electrical
box or wall.
Wiring the hub
The Guardian contains multiple digital connector points.
A – 48V DC battery power
Optional. Positive, Negative (Fortress 48V batteries only)
B – modbus communication
Not used. 1A, 1G, 2A, 3A (upper) / 2A, 2G, 2B, 3B (lower)
C – not used
Not used. 1DI, 2DI (upper) / 1G, 2G (lower)
D – battery canbus communication
2L, 2G, 1L (upper) / 2H, 1G, 1H (lower) grounds not used
E – hardwired ethernet
Optional. 100Mb, 1Gb
F– Not used.
Reserved for future use
The Guardian includes a pre-wired communication cable to communicate with both eVault MAX
and eFlex battery units.
Powering the Guardian
The Guardian includes options for 120V AC power, 48V DC power, or both
simultaneously. Using both power supplies simultaneously allows for cell phone - Guardian
communication even when the AC or DC power is unavailable. Please note the AC power
adapter converts to 24V - Do not connect battery power to the port intended for the AC wall
wart. Use the 48V DC power port connector instead.
eFlex Specific Instructions
The Guardian connects to the last remaining communication port on the communication circuit. It does
not matter which communication port is used. Remove the canbus resistor an install the Guardian
communication cable directly onto this port.
For outdoor installations, you may need to install a female-female ethernet connector to transition to
the weatherproof communication cabling, in order to maintain the weatherproof rating of the eFlex
battery. This custom cabling is not required for indoor eFlex installations or installations inside the
DuraRack or FlexTower.
eVault Specific Instructions
The Guardian connects to the last remaining communication port on the battery-battery communication
circuit. It does NOT connect to the eVault canbus port.
Move the canbus resistor toggle switch to the OFF position (the canbus resistor is included inside the
Guardian unit). If more than one eVault MAX are installed, only the primary battery unit should have the
canbus resistor in the ON position.
For outdoor installations, you may need to install a female-female ethernet connector to transition to
the weatherproof communication cabling, in order to maintain the weatherproof rating of the eFlex
battery. This custom cabling is not required for indoor eFlex installations or installations inside the
DuraRack or FlexTower.
Commissioning
A cell phone app is used (with Bluetooth) to set up Wi-fi access. Hardwired ethernet may also be used.
Please visit the Google Play store or Apple App store and search for the Fortress Guardian App.
•Login or Signup for the Guardian App by entering new account credentials or
authenticating with a provider such as google or apple, and accept terms and conditions:
•Connect your phone to the Guardian hub over Bluetooth connection:
•Connect your Guardian hub to the internet over your home WI-FI:
•Name your Fortress system and provide your address
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