+49 (0) 74 86 / 97 86 5 – 00
FAQ

S.USV MODULES

01
What are the advantages of the S.USV solutions modules?

During the work process on the single-board computers, operating system and user data are continuously written on the SD card. A sudden failure or power disruption while writing files can lead to loss and/or corruption of important data. The S.USV solutions bridges these voltage fluctuations and gives the single-board computers more stability in the supply through the uninterrupted power supply. In addition, the S.USV solutions have other useful additional functions.

 

02
Are the S.USV solutions modules fully Plug & Play?

The S.USV solutions modules are intelligent plug & play solutions. No further configurations are necessary to use the main function of the non-disruptive power supply. The interface and communication between single-board computers and S.USV are automatically configured via HAT EEPROM. A corresponding S.USV client and daemon are available for monitoring and controlling the modules.

 

03
Which single-board computers are the S.USV solutions modules compatible with?

The S.USV solutions series currently consists of three different versions:
-S.USV pi (Compatible with all Raspberry Pi models)
-S.USV UPs (Compatible with all AAEON UP boards)
-S.USV tinker (Compatible with all ASUS tinker boards)

 

04
How is the power supply of the S.USV done?

The power supply of the S.USV solutions is supplied directly via the GPIO power pins of the single-board computers and thus uses a common voltage source, so no further wiring or power supplies are necessary. The “Advanced” variant also offers a power input for the extended voltage range of 7-24 volts (solar cells, motor vehicles – range, etc.).

 

05
Which power supplies can be connected via the external entrance?

All voltage sources with a voltage range between 7-24V and a minimum output current of 2A can be used.

 

06
What safeguards have been implemented in terms of power supply?

In order to protect the external power supply, as well as the S.USV module and single-board computers from damage, the following precautions were taken on both primary and secondary sides:
-ZVD-Circuit
-TVS-Circuit
-PPTC Fuse
-Power Monitoring System

 

07
What is the output of the S.USV solutions modules?

The S.USV solutions modules provide the following output:
-Primary: 5V/3.5A (+/-5%)
-Secondary: 5V/3.5A (+/-5%)

 

08
Which GPIO pins are occupied by the S.USV?

The following GPIO – pins are used for the power supply as well as the data transmission of the S.UV:
-Pin #02: DC Power + 5V-Power
-Pin #03: GPIO 02 (SDA1, I ² C) – I ² C data line
-Pin #05: GPIO 03 (SCL1, I ² C) – I ² C clock line
-Pin #13: GPIO 27 (GPIO_GEN2) – condition monitoring S.UPS
-Pin #27: ID _ SD (I ² C ID EEPROM) – ID data line
-Pin #28: ID _ SC (I ² C ID EEPROM) – ID clock line

 

09
How is the automatic switch from primary to secondary supply mode done?

The input voltage of the entire system is cyclically monitored by the software and compared with an internally configured voltage reference. In order to meet the supply specifications of 5V +/-5%, less than 4.75V is automatically switched to secondary mode (battery operation) in the event of a drop in voltage. When the primary power supply returns, the S.UV automatically switches back to primary mode.

 

10
What kind of batteries are used with the S.USV solutions modules?

Lithium-polymer accumulators designed specifically for the system are used. Each product has a 300mAh battery, optional a battery with a higher capacity of 3000mAh for increased bridging times can be obtained via our online store.
For more data on battery characteristics, see p.4 – Chapter 2 Technical specifications. We generally advise against using accumulators with different characteristics.

 

11
Can higher capacity batteries also be used?

There is generally no capacity limit for the use of lithium polymer or lithium-ion accumulators. The current revision 2.0 up to a capacity of 10,000mAh was tested positively.
For more data on battery characteristics, see page 4 – Chapter 2 Technical specifications. We generally advise against using accumulators with different characteristics.

 

12
How does the battery – charging circuit work on the S.USV solutions modules?

An intelligent battery management system has been implemented for all S.USV solutions products. The charging circuit was specifically designed for the use of lithium polymer and lithium-ion accumulators. The charging circuit divides the charge of the batteries into four inter-controlled charging cycles in order to gently charge the battery and thereby increase the lifespan. The batteries offered by us can be charged up to a lodestrom strength of 1A, the charging force can be configured by the user via the client software (300, 500 and 1000mA).

 

13
What safeguards have been implemented with regard to the power supply of the batteries?

Thanks to the intelligent battery management system, as well as the Protection Circuit modules on the batteries we offer, they are secured from damage (overvoltage, deep discharge and overheating) by the software as well as by the hardware. With a residual capacity of less than 25%, this is signalled by the status indicators, with a residual capacity of less than 10%, the system is led into the shutdown process to avoid deep discharge. In secondary mode (battery operation), the charging circuit is automatically deactivated.
In this scenario, software and hardware work independently to protect the accumulators from damage in any case.

 

14
Can the S.USV solutions modules also be operated in conjunction with other HATs?

A key focus of the S.USV solutions series is the modularity and variability of the system. All GPIO pins are connected 1:1 and can be freely reused, only GPIO Pin 13 (GPIO27) is reserved for condition monitoring by the S.UV.
The following product ranges have been tested positively so far:
-HiFi Berry
-FHEM
-HomeMatic
-Enocean
-RPI WWCAM

 

15
How does the automatic shutdown work?

In the Automatic Shutdown of the S.USV, the measured input voltage is continuously compared with a reference value (voltage threshold). If the input voltage falls below the internally configured threshold of 4.75V, the S.UV automatically switches to secondary mode (battery operation). The resulting shutdown process is traded in this mode depending on the configured shutdown timer.
For more information and configuration options, please follow page 17-Chapter 4.1.1 Daemon configuration.

 

16
Does an automatic restart of the system follow after the return of power?

A return of the primary voltage immediately leads to a restart in the switched off state of the system. The system goes into the reboot process. Even during the shutdown process, a return of the primary voltage leads to a direct reboot of the system after the shutdown process is completed.

 

17
How does the timed switching off of the S.USV solutions modules work?

The user can activate and configure the function of the timed switching off of the entire system. After a successful configuration, the system can be put to rest for configured shutdown time. In this state, the integrated Real Time Clock is evaluated by appropriate firmware routines and reacts to it depending on the configured boot time. If the configured time is match, the system will automatically enter the boat process.
For more information and configuration options, please follow page 20 – chapter 4.2.1 client options

 

18
Is it possible to have a pre-configured mail notification/alert?

It is possible to activate appropriate mail notification by the S.UV. For this purpose, the user stores his mail data in a predefined python script, which is sent in the event of loss of the primary supply voltage, in order to inform the customer about the failure of the supply source.
For more information and configuration options, please follow page 20 – chapter 4.2.1 client options.

 

19
Is it possible to have pre-configured user shutdown scripts?

Through the content of the S.USV modules (susv.cfg in/opt/susvd), corresponding user shutdown scripts can be created by the customer, which are carried out when the shutdown process is initiated.
For more information and configuration options, please follow page 20 – chapter 4.2.1 client options.

 

20
How is communication between S.UV and single-board computers done?

Communication between S.UV and single-board computers is via the I2C interface (3.3V level). The S.USV modules work as slaves, so the I2C bus can be easily reused over further peripherals.
All available data such as input voltage, power consumption or residual capacity of the battery can be processed via appropriate I2C registers or retrieved directly from the pre-configured client commands. This allows the user to react independently to different events.
For more information or configuration options, please follow page 14 – chapter 3.2.5.1 Register and S. 4.2.1 client options.

without
https://olmatic.de/wp-content/themes/hazel/
https://olmatic.de/en/
#c2bd11
style1
paged
Loading posts...
/mnt/web003/c3/97/5404997/htdocs/main/cms2/
#
on
none
loading
#
Sort Gallery
on
yes
yes
off
on
off