JETI JMS-MSW Manual de Usario

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User manual: Magnetic switch
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1. Introduction
The Magnetic switch is an electronic switching device designed to be used as a switch for JETI
model products. A big advantage of electronic switches in comparison to mechanical switches is that,
in general, electronic switches are highly resistant to vibration. Also, virtually an unlimited number
of ON and OFF cycles is guaranteed with an electronic switch. Because electronic switches have no
mechanically movable elements, contacts etc. to wear out, an extremely long service life is another
important feature. Unlike with mechanical switches, electronic switches cannot be unexpectedly or
falsely tripped.
The Magnetic switch’s trigger pad is designed for installation on an aircraft fuselage. The system is
switched on and off using a special magnet (see chapter 3).
2. Connection
The Magnetic switch has 4 outputs that can be connected via three-wire cable with JR connector.
The outputs are divided into two pairs, one pair of outputs is electrically isolated (using an opto
coupler). Each pair of outputs has a single non-inverted output and a single inverted output.
ESC
Opto
User manual: Magnetic switch
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Fig. 1: Magnetic switch application connections
Every individual device must be connected to the correct output from the Magnetic switch. If the
inverted output connection is confused for the non-inverted output, the switch will operate in reverse!
This means that the green LED on the magnetic switch will indicate the OFF state of the device!
If it is necessary to separate two circuits to prevent interference, be sure that the wiring is correct.
One circuit (the one where the interference is possible) must be connected to one of the switch
outputs that are optically isolated. The other circuit must be connected to one of the switch outputs
that are not optically isolated, see Fig. 1: Magnetic switch connections. When optical isolation is
desired, the –poles of the separated circuits must not be connected, as well as the + poles must not be
connected.
The Magnetic switch is powered from unseparated outputs, so at least one of these outputs must be
connected. If the power supply is interrupted when the magnetic switch is turned on, the devices
connected to optically isolated output are turned off! For example: in Fig 1, when power is
restored, the ignition would be turned off but the Rx would stay turned on.
3. The function of the Magnetic switch
The Magnetic switch is designed to switch the JETI model products on and off. For switching on,
the magnetic key must be placed on the small target in such a way that the small hole in the key and
the dot on the switch target has the same orientation. The Magnetic switch is equipped with a green
LED indicating the „switched on“ condition.
User manual: Magnetic switch
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LED ON - blinking light indicates magnet range
- steady light indicates switched on condition
When you correctly position and hold the magnet on the target as described, after 1 sec the green
LED will turn on as a steady light, showing that the electronic switch is ON. Switching off is done in
a similar way. When the magnet touches the target in the proper orientation again and is held in place
for 1 sec., the green LED turns off and the system switches OFF.
The switch system remembers its last switch position (non-opto isolated outputs only). This means
that if you switch it on with the magnetic switch and then disconnect the batteries, it will
automatically return to the on position after you connect the batteries again. For safety reasons
always switch the system off with the magnetic switch before removing the supply batteries.
When switching on the electronic switch, first connect both batteries and only afterward
switch the system on by using the magnetic switch. When switching off, follow the same rule.
First switch the system off using the magnetic switch and only afterward disconnect the
batteries.
4. Installation
The magnetic switch can be mounted to the model using the provided mounting holes. When
drilling holes for the magnetic switch, use the outer cover as a pattern. The outer cover of the
magnetic switch is designed to be attached to the outside of the model fuselage and is mechanically
connected by bolts to the base.
5. Magnet Handling Safety Rules
As the electronic switch system is operated by a magnet, it is necessary to observe safety measures
as far as handling magnets is concerned. The magnet in the magnetic key is mounted inside a light
weight alloy carrier.
1. Keep a safe distance from equipment which could be damaged by magnetism, like for instance TV
sets, credit cards, PCs etc. A magnet may disturb operation of pacemakers!
2. Keep the magnet out of reach of children, it may be swallowed or cause bruises

Especificaciones del producto

Marca: JETI
Categoría: juguetes radiocontrolados
Modelo: JMS-MSW

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