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Perun
AB
User and installation manual
1. General information
Perun AB is an electronic circuit that protects mechanical switches in your
replica. When installed, high currents used to accelerate the motor are not
directed through contacts, but through specialized MOSFET transistor. It not
only increases reliability but also has a positive effect on the rate of fire as
MOSFETs have much lower resistivity than contacts.
Besides that, Perun AB allows you to enable or disable active brake mode
(AB), which stops the motor as soon as gearbox cycle ends. This helps by
reducing spring wear.
For Li-Po battery users Perun AB offers Li-Po protection mode that will alarm
you if battery voltage falls to dangerously low levels.
Warranty – 1 year
Allowed battery types:
Li-Po, 2 to 4 cells (7.4V to 14.8V)
NiMH/NiCd, 8 to 10 cells (9.6 to 12V)
Li-Fe, 3 cells (9.9 V)
ATTENTION! The device must never be run without a fuse.
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Summary of Contents for Perun AB
- Page 1 MOSFETs have much lower resistivity than contacts. Besides that, Perun AB allows you to enable or disable active brake mode (AB), which stops the motor as soon as gearbox cycle ends. This helps by reducing spring wear. For Li-Po battery users Perun AB offers Li-Po protection mode that will alarm you if battery voltage falls to dangerously low levels.
- Page 2 2. Installation Put wires together according to the following scheme: You may shorten the white and red cables already soldered to Perun AB as needed, but please do not replace them. After soldering the whole wiring together, use attached shrinktube for insulation.
- Page 3 Also, with AB deactivated the piston will stop closer to the rear position, so the next shot will be fired quicker. In order to turn AB on or off press and hold the button on the device. One long sound signal will mean that AB has been turned on, three short signals will mean it is off.