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Perun ETU++ Manual
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Perun ETU++ Manual

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Perun ETU++ replaces stock electronics in replicas with Electronic Trigger Unit by G&G. It
provides lots of additional features, as well as allows the replica to work with many different
battery types. Reading this manual will help you fully exploit this unit's potential and in case
of encountering any problems, you can look here for solutions.
Manufacturer:
Perun
Barwicka 8 St.
60-192 Poznań
Poland
e-mail:
info@perunairsoft.pl

Table of contents

1.
Technical data.................................................................................................................................. 2
2.
Features and programming ............................................................................................................. 2
3.
Factory settings ............................................................................................................................... 4
4.
Diagnostic system ............................................................................................................................ 5
5.
Switch check .................................................................................................................................... 7
6.
Custom/DIY projects ........................................................................................................................ 7
ETU++
Manual
1

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Summary of Contents for Perun ETU++

  • Page 1: Table Of Contents

    ETU++ Manual Perun ETU++ replaces stock electronics in replicas with Electronic Trigger Unit by G&G. It provides lots of additional features, as well as allows the replica to work with many different battery types. Reading this manual will help you fully exploit this unit’s potential and in case of encountering any problems, you can look here for solutions.

  • Page 2: Technical Data

    1. Technical data Recommended power sources Perun ETU++ works with any power source that provides a voltage between 7 and 17 volts and can deliver enough current to ensure smooth cycling of the replica. Li-Po and Li-Ion batteries with a nominal voltage of 7.4, 11.1 or 14.8 volts are recommended.
  • Page 3 Full feature description All the settings are set independently for “SEMI” and “AUTO” selector positions, except for Li-Po alarm and Master reset, which work for both selector positions. Video manual is available here: https://youtu.be/OxTmKhq7bs8 Function and Description LED color Firing mode Choose one of the firing modes for any selector position: safe, semi, 2-5 shot burst and, auto.

  • Page 4: Factory Settings

    Function and Description LED color ROF reduction This function allows to lower the rate of automatic fire. 5 reduction levels are available: 1 – 6% ROF reduction White 2 – 12% ROF reduction 3 – 18% ROF reduction 4 – 24% ROF reduction 5 –...

  • Page 5: Diagnostic System

    4. Diagnostic system Perun ETU++ has a diagnostic system that will help you find the source, should you encounter a problem. After the battery is connected, the unit undergoes a start-up check, to make sure the replica is ready to work. Successful completion of this check is indicated by a short green blink of the LED.
  • Page 6 Po or Li-Ion, disable the Li-Po alarm). time The same Low-resistance MOSFET transistor and wiring used in Perun ETU++ provide battery resistance much lower than mechanical contacts and some other MOSFET circuits. and/or motor According to Ohm’s law, that allows more current to be drawn from the battery did not heat and directed to the motor.

  • Page 7: Switch Check

    5. Switch check You can easily check the switch set in the gearbox by disconnecting the motor. When ETU++ is connected to the battery, but disconnected from the motor, it informs about this by yellow, flashing light. If during that flashing a properly working and connected switch will be closed, the unit will signal that by changing the LED color for a moment.
  • Page 8 Plug The Plug that is used in G&G replicas with ETU and works with Perun ETU++ is JST ZHR-4. It is available in many electronic shops. We recommend using plugs with pre-installed wires that can be lengthened, because correct preparation of the bare plug might be difficult.