Q.
¿Que señal requieren los Servos Hitec para operar?
A. Todos los servos Hitec requieren una onda cuadrada de 3-4V pico a pico. La duración del pulso es de 0.9ms a 2.1ms con 1.5ms en el centro. La frecuencia del pulso es de 50Hz (20ms).
Q.
¿Que es la "banda muerta" de un Servo?
A. La banda muerta refleja el tiempo que tarda un servo en responder a un movimento dado de un mando en el equipo de radio. Los servos estándar tienen una banda muerta de alrededor de 8 micro segundos y los de alto rendimiento entre 1 y 3 micro segundos.Deadband reflects the time it takes for
a servo to respond when stick movement is given. Standard servos have a
deadband of around 8us and high performance servos have a deadband of
1~3us.
Q.
¿Cual es el voltaje permitido por un Servo Hitec?
A. All Hitec servos
can be operated within a 4.8 - 6V (4 or 5 cells) range. Only the HS-50
operates exclusively at 4.8 volts (4 cells). Be aware that "coreless" and
digital servos often perform poorly when alkaline batteries are used.
Q.
¿Cual es el significado de los colores en el cable de conexión?
A. On all Hitec servos the
black wire is battery ground (negative), the red wire is battery power
(positive) and the white or yellow wire is receiver signal.
Q. In
¿Cual es el significado de los colores en el cable de conexión?
A. All Hitec servos
turn in the clockwise direction (CW).
Q.
¿Cómo puedo invertir el sentido de giro de un Servo Hitec?
A. The easiest
way to reverse direction is to use the reverse switch in the transmitter.
If you have two servos on a y-harness one will have to be modified for
reverse rotation or a reversing y-harness used.
There are four wires that must be switched in order to change the servo direction. Two are on the motor and 2 are on the potentiometer. Switch the red and green wires on the pot and the orange and brown wires on the motor.
Hitec provides these
instructions for information purposes only. Hitec assumes no liability
when modifications are made to servos.
Q.
¿Que Servo debería usar para mi avión, helicóptero, coche ...?
A.
One of the most frequently asked questions is "What servo should I use
for…..". While there have been many magazine articles that attempted to
provide a general rule of thumb to answer these questions, we offer you
the following information.
- There are two
factors that go into the design of a servo, Speed and Torque. In many
cases, Hitec will create one servo geared for speed while sacrificing
some torque, then create its twin, which is geared for torque at the
sacrifice of speed. Our 525/545, 625/645, 925/945 servo products are
perfect examples.
- If you are not sure
which servos to use go with high torque.
- When in doubt ask
your peers about servo application questions. Look at what others are
using in comparable applications. Usually the kit manufacturer will
suggest a servo of a certain physical size and torque value
specification in the aircraft, car or boat plans, it's wise to follow
their guidelines.
- Even though micro servos like the HS-81 may offer 38oz/in of torque, they are not appropriate for larger powered aircraft due to the flight loads placed on the control surfaces. Smaller servos have thinner gears that are inherently more fragile than those of "standard" sized servos.
Q.
¿Cual es la diferencia entre un Servo analógico y uno digital?
A. The
difference is in how the servo motor is controlled via the circuit board
(amplifier). The motor of an analog servo receives a signal from the
amplifier 30 times a second or at 30Hz. This signal allows the amplifier
to update the motor position. Digital servos use a high frequency
amplifier that updates the servo motor position 300 times a second or at
300Hz. By updating the motor position more often, the digital servo can
deliver full torque from the beginning of movement and increases the
holding power of the servo. The quick refresh also allows the digital
servo to have a tighter deadband.
Q. ¿Tengo un Servo antiguo Hitec con cable blanco, puedo utilizarlo?
A. What you
have is a older servo with a Molex connector. Hitec cannot support this
product anymore because that type of Molex connector is not manufactured
anymore. You can change the plug to a modern Hitec "S" connector using
part #57342S
Q.
¿Cual es la diferencia entre un Servo "cored" y un Servo "coreless"?
A. In a
standard motor like the one in the HS605 servos, there is an iron core
between two permanent magnets. Around this core is the wire winding. The
core generally has either 3 or 5 sections. As the core moves, these
sections cause the core to hesitate slightly when it reaches a different
magnetic polarity. This is called ratcheting. Because of this ratcheting,
the cored servos have less start up torque and a wider dead band.
In a coreless servo,
there is no iron core. There is one permanent magnet around which is a
bell of wire. When electricity is supplied the bell spins around this
magnet. Since there are no sections or core, there is no hesitation
between poles. This gives the coreless servo better start-up torque and
resolution.
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Q.
Tengo un Servo 1/4 escala que viene con un cable en Y. ¿Cómo tengo que usarlo?
A.
The y-harness is included so you can defeat the Battery Eliminator Circuit
of AM receivers. This is required, because that circuit limits the amount
of current the servo can draw causing it to behave erratically or lessen
its torque. To use the y-harness, plug it into the same channel that you
plan on using for your servo. Then plug the switch and battery into one
end and the servo into the other end. Do not use a different battery to
power the receiver. Because the negative and positive traces in the
receiver are linked to each channel, the battery on the y-harness will
power the remaining servos and the receiver.
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Q.
¿Puedo utilizar fijatornillos con mi Servo de Karbonita?
A. It has come to the attention of
the Hitec Product Service Department that some customers owning Hitec's
KARBONITE gear servos are using thread locking compounds on the servo horn
screws. Thread locking compounds such as the popular Locktite™ brand, are
for use with METAL to METAL fasteners.
USING A THREAD LOCKING COMPOUND ON KARBONITE GEAR SERVOS WILL CAUSE THE PLASTIC TO FAIL.
Thread locking
compound instructions typically warn against their use on plastics, as
most plastic material will become brittle and shatter. If you or any of
your friends have used thread locking compounds on plastic / KARBONITE
geared servos, please cease using them immediately and contact a Hitec
dealer for a replacement gear set.
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