Joy-it STROM PI 2 User manual

STROM PI 2
Power Solution
1. GENERAL INFORMATION
Dear customer,
thank you for choosing our product. In the following, we will show what
you should note at the commissioning and during the usage.
Should you encounter any unexpected problems during use, please do not
hesitate to contact us.
The StromPi 2 expansionboard is the new development of the Joy-IT power
solution. Not only, the voltage range is increased from 6 to 61 V to connect
for example bigger / more batteries or power supplies.

Therefore, the StromPi 2 board provides now up to 3 A current to supply
greater projects with enough power. Moerover, the reset-function for the
Raspberry Pi is now integrated which extends the USV-function of the
StromPi practically.
Through the new super-at construction and connection, the StromPi 2 ts
in many cases and new application areas. The StromPi 2 allows to connect
your Raspberry Pi with an arbitary voltage source with a voltage range from
6 to 61 V so that you have new possibilities to applicate the Raspberry Pi (car,
ship, truck, industrial plant etc.). Furthermore, the Raspberry Pi
receives optionally an upgrade of the USB outputs to a high power USB
output to operate power-intensive devices for examples USB-hard disks
without any restrictions.
The integrated USV-function enables the safeguarding of critical
applications against power failures. Via soware for the Raspberry Pi, it is
possible to monitor the USV-function and to mail dierent reports via e-mail
in case of a failure. Due to the used eicient solution for switching
regulators, it allows the Raspberry Pi to operate as a portable device via a
battery.
useful expansion of the USV-mode: Aer the Raspberry is shut down at a
power failure by the StromPi, the new reset- function restarts the Raspberry
Pi automatically if the main voltage source is available again.
intended use: The expansion board to connect a compatible single board
computer (e.g. Raspberry Pi)with a voltage source from 6 to 61 V so it can
operate with this power.
warning: At a heavy load, the StromPi can heat up. Do not touch the
board during use to prevent burn injuries - enable a solid air
supply to enclude the overheating of the device.
!

3. OPERATING MODES
2. PIN ASSIGNMENT
high-power
USB output
Data input (for high-
power USB output)
and current output
microUSB (5 V)
voltage input
(primary)
2. mode
switch
wide-range (6 - 61 V)
voltage input
(secondary)
reset - switch
GPIO - port
1. mode switch
(USV | Wide) T - PIN
The StromPi 2 has 2 operating modes UPS and Wide operation which are
explained in the following.
UPS-mode
The UPS-mode operates especially battery-saving. The wide range voltage
source is only charged in standby with 20 - 80 µA. This standby power
consumption is is very low so that the maintenance cycles of possible
bypass batteries / batteries can be accordingly long.
For one year of a standby operation, this circuit takes for example from
175 mAh to 700 mAh out of the wide range voltage source.

For example a standard 3200 mAh LiPo-battery with 7.2 V would be
theoretically existent ( if the self-discharge, environment eects like
weather conditions, temperature and quality of the battery are excluded)
2500 mAh for the bypass operation - aer 1 year of service life. (This is a
theoretical statement to show how low the power consumption is. The real
capacity of batteries is inuenced by many dierent factors.)
This low standby power results that the wide-range assembly is only
activated if the power supply of the microUSB with the marking “IN“ fails.
In such a case the StromPi switches seamlessly to the wide range voltage
source like for example a connected battery. The power which is needed
during the switching , will be buered by the StromPi.
The disadvantage is that if the StromPi 2 is in the UPS-mode, it can only start
with the above-named microUSB-input „IN“.
Wide-mode
In the „WIDE“-mode, the StromPi 2 can be started and operated by the
microUSB-input via the common microUSB power supply as well as by the
wide range voltage input which is for voltage sources with a voltage from 6
to 61 V.
This function is useful for application areas like for example vehicles (car,
truck, ship) or for the mobil operation with a battery.
The voltage source from the microUSB input is thereby preferred so that at
a failure it can be switched seamlessly to the wide range voltage source.
This mode is recommended for the direct operation of a wide range
voltage source - we recommend for battery-backed systems the
above-named USV-mode. Also if the StromPi is operated via microUSB,
it consumes approx. 3 to 7 mA from the wide range voltage source; this
complies with approx. the thousandfold of the power consumption in the
USV-mode.
We recommend the usage of a switch in the wide-mode in order that in
case of a non-utilisation for example in a car, so that the battery will not be
emptied.

Switching between USV & Wide-mode
Both operating modes can be selected via jumpers on the upper side of the
board - Please note the markings on the board.
Both jumpers must be reconnected in case of a mode change!
High-power-USB
One of the biggest disadvantages of the Raspberry Pi is that the USB
outputs do not have a high power. So the operation of a USB hard drive is
not possible for example the application of a media center or a NAS.
With the StromPi 2, you have the opportunity to expand the Raspberry Pi
with a high-power USB connection and to enable a higher power output of
the remaining USB-ports.
For that, you must connect to the second microUSB-port which is marked
as “Data IN, Power OUT“ a common microUSB-cable - connect the other
side of the cable with a free USB-port at the Raspberry Pi.
Thereby, the USB-Port of the StromPi 2 is connected with the Raspberry Pi
and can supply this way the Raspberry Pi depending on the voltage source
with up to 3 A current. Even the remaining USB-ports of the Raspberry Pi
have the opportunity to obtain more power.

voltage monitoring
At the StromPi board, a testpoint is marked with “T-PIN“. With this, the
status of the StromPi can be transferred to the Raspberry Pi.
By default, the StromPi is connected with the GPIO21 of the Raspberry Pi via
a jumper. If you want to use the GPIO21 for other application, you can make
it available again through removing the jumpers. Via a
pin-connector-cable, the T-PIN can be connected with another free GPIO-pin
from the Raspberry Pi.
With our soware, you can get a e-mail notication if the StromPi switches
to the battery-mode or it shuts itself down to save critical data against an
abrupt system crash for instance.
You can nd this soware in the download area on our website.
https://joy-it.net/en/products/RB-StromPi2
Reset-circuit
One of the upgrades in comparison of the predecessor is the installed
reset-circuit from the StromPi 2. This allows the automatic booting of the
Raspberry Pi if the interrupted microUSB main voltage source is restored.
That is helpful during the operation of the USV-mode.
If you want to switch more oen between the voltage sources (e.g. battery →
power supply →battery →etc.), you can deactivate the reset-function by
removing the jumper.

The position of the reset-area is dierent between the older models of the
Raspberry Pi like B+, 2B and the Raspberry Pi 3. For this case The StromPi
has 2 reset-pins on the underside.
The reset-pin of the StromPi for the Raspberry Pi is isolated by default
because it would cause shorts on the elder models!
Raspberry Pi 3
If you want to use the reset-function on the Raspberry Pi, you must remove
the isolation of the reset-pin for the Raspberry Pi 3.
The reset-pin for the old models can be ignored because it will not touch
any components.
reset-pin
for Raspberry Pi B+, 2B
reset-pin for
Raspberry Pi
If you want to use the StromPi aer that on an elder model, you must
absolutely isolate this pin again. The Raspberry Pi and the StromPi can
otherwise be damaged.
Raspberry Pi B+ / 2B
The pin for elder models is already free and the pin for the Raspberry Pi 3 is
isolated by default so that you can pin on the StromPi directly.

Wide range voltage input
You can now connect at the marked port arbitary voltage sources like for
example power supplies, batteries or vehicle onboard supply.
Our information and redemption obligation according to the
electro-law (ElektroG)
Symbol on electrial and electronic products :
This crossed-out bin means that electrical and electronic products do not
belong into the household waste. You must hand over your old appli-ance
to a registration oice. Before you can hand over the old appliance, you
must remove used batteries and accumulators which are not enclosed by
the device.
Return options :
As the end user, you can hand over with the purchase of a new device
your old appliance (which has essentially the same functions as the new
one) free of charge for disposal. Small devices which do not have outer
dimensions greater than 25 cm can be submitted independently of the
purchase of a new product in normal household quantities.
Possibility of restitution at our company location during our opening
hours :
Simac GmbH, Pascalstr. 8, D-47506 Neukirchen-Vluyn
This must be in a switched on
condition in a range from 6 to 61 V
- Please pay attention to the polari-
ty to avoid damage to the Raspberry
Pi and the StromPi.
Alternatively, the StromPi can be operated by the microUSB-port which is
on the topside. This port is marked with “IN“.
4. FURTHER INFORMATIONS
2

5. SUPPORT
If any questions remain open or problems arise aer your purchase, we are
available by e-mail, telephone and with a ticket support system to answer
these.
E-Mail: [e-mail]
Ticket-System: http://support.joy-it.net
Telephone: [phone] – 66 (10 - 17 o‘clock)
For further information visit our website:
www.joy-it.net
www.joy-it.net
Simac Electronics Handel GmbH
Pascalstr. 8 47506 Neukirchen-Vluyn
Published: 26.08.2019
possibility of restitution nearby :
We send you a parcel stamp with which you can send us your old appliance
free of charge. For this possibility, you must contact us via e-mail at
[e-mail] or via telephone.
information about packaging:
Please package your old appliance safe during transport. Should you not
have a suitable packaging material or you do not want to use your own
material, you can contact us and we will send you an appropriate package. 1
6. CE CONFORMITY DECLARATION
We the manufacturer, JOY-IT Europe GmbH declare, that the product
RB-StromPi2 in accordance with the regulations for use match basic requi-
rements of the folllowing Guidelines:
EMC-Guideline 2014/30/EU (AMV) 6 2011/65/EU (Rohs).
The following stated standards were used for the evaluation of the device.
EN 55022: 2010 +AC2011
EN 55024: 2010
JOY-IT Europe GmbH, Pascalstr. 8, 47506 Neukirchen-Vluyn
14.10.2015 Yue Yang Geschäsführerin AR T -NR. : R B-StromPi2
Inv erkehrbringer:
JOY-iT Euro pe GmbH
Pascalstr. 8
D-47506 Neukirchen-Vluy n