Airfield 95A251 User manual

ASSEMBLY:
Aileron
(1)
(2)
(3)
(4) Install the .
(5) Install the main landing gear.
(6)
(7) Install the front landing gear.
Install the right and left main wings.
Install the left and right horizontal wings.
Install the left and right vertical wings.
spoiler
Install the nose cone.
95A251
WINGSPAN :
LENGTH : 1032mm/40.6in
WEIGHT : 640g/22.6 oz
BATTERY : 11.1V Lithium Polymer Battery
POWER SYSTEM : Outrunner Brushless Motor
RC SYSTEM : 4 Channel
686mm (27 inches)
Vertic al Tail (lef t)
Horiz onta l Tail( left )
95A25 1-05
Fusel age
Part List
Main Wi ng(l eft)
95A25 1-02
95A25 1-01
95A25 1-11
95A25 1-04
95A251-12
Motor
Nose Co ne
95A25 1-08
Landi ng Gea r
95A251-10
95A25 1-07
95A25 1-06
95A25 1-13
9g Serv o(15 0mm)
95A25 1-14
9g Serv o(30 0mm)
1003专用F18英文说明书
尺寸:420X580MM
材质：128g双铜
95A25 1-09
Ducte d Fan wi th mot or
ESC
Airfi eld -RC
airfieldrc
Do not over di sch arg e Lip o; doing so will d ama ge th e bat tery.
(1) (3)
95A25 1-15
Transmi tter R ecei ver
95A25 1-16
Batte ry
95A251-17
Main Wi ng(r ight )
Vertic al Tail (rig ht)
Horiz onta l Tail( left )
95A25 1-03
615-630mm
(2)
(4) (5) (6)
(7)

1
Specification:
Type PN#Model Cont.\Burst
Current(A)
Battery cell
NiXX/Lipo
Weight
(g)
BEC
Output
Size (mm)
W*L*H
User
Progra
m
A-ZTW3A BEC ZTW12003 3A\5A 3-10 NC \ 1-3 Lipo 2.5 5V / 1A 11 x 17 x 4 yes
A-ZTW6A BEC ZTW12006 6A\8A 5-10 NC \ 2-3 Lipo 5 5V / 1A 13 x 21 x 4 yes
A-ZTW8A BEC ZTW12008 8A\10A 5-12 NC \ 2-4 Lipo 8 5V / 1A 21 x 22 x 4 yes
A-ZTW10A BEC ZTW12010 10A\12A 5-12 NC \ 2-4 Lipo 8 5V / 1A 21 x 22 x 4 yes
A-ZTW12A BEC ZTW12012 12A\16A 5-12 NC \ 2-4 Lipo 8 5V / 1A 21 x 22 x 4 yes
A-ZTW20A BEC ZTW12020 20A\30A 5-12 NC \ 2-4 Lipo 18 5V / 2A 23 x 33 x 6 yes
A-ZTW25A BEC ZTW12025 25A\35A 5-12 NC \ 2-4 Lipo 20 5V / 2A 23 x 33 x 6 yes
A-ZTW30A BEC ZTW12030 30A\40A 5-12 NC \ 2-4 Lipo 28 5V / 3A 23 x 43 x 6 yes
A-ZTW40A SBEC ZTW12040 40A\60A 5-18NC \ 2-6 Lipo 32 5.5V/ 4A 23 x 52 x 7 yes
A-ZTW50A SBEC ZTW12050 50A\70A 5-18NC \ 2-6 Lipo 32 5.5V/ 4A 23 x 52 x 7 yes
A-ZTW60A SBEC ZTW12060 60A\80A 5-18NC \ 2-6 Lipo 44 5.5V/ 4A 23 x 52 x 14 yes
A-ZTW70A SBEC ZTW12070 70A\90A 5-18NC \ 2-6 Lipo 48 5.5V/ 4A 23 x 52 x 14 yes
A-ZTW85A SBEC ZTW12085 85A\100A 5-18NC \ 2-6 Lipo 60 5.5V/ 4A 34 x 52 x 14 yes
A-ZTW110A SBEC ZTW12110 110A\120A 5-18 NC \ 2-6 Lipo 86 5.5V/ 4A 34 x 52 x 20 yes
A-ZTW100A OPTO HV ZTW12100 100A\120A 18-38NC\6-12Lipo 76 34 x 52 x 20 yes
ZTW A-Series ESC’s Features:
◆Extremely low internal resistance
◆Super smooth and accurate throttle linearity
◆Safety thermal over-load protection
◆Auto throttle shut down in signal lose situation
◆Supports high RPM motors
◆Power arming protection (prevents the motor from accidentally running when switched ON)
◆New Advanced programming software
ZTW A-Series’s ESC allows you to program all functions to fit your specific needs, which
makes it very efficient and user friendly:
1.User programmable brake setting (we recommend using brake for only folding props applications)
2.User programmable battery type(LiPo or NiCd/NiMh)
3.User programmable low voltage cutoff setting
4.User programmable factory default setup restore
5.User programmable timing settings (to enhance ESC efficiency and smoothness)
6.User programmable soft acceleration start ups (for delicate gearbox and helicopter applications)
7.User programmable governor mode (for helicopter applications)
8.User programmable motor rotation(clockwise\counterclockwise)
9.User programmable switching frequency
10.User programmable low voltage cutoff type (power reduction or immediate shutdown)

2
Settings:
1.Brake: ON/OFF
* ON- Sets the propeller to the brake position when the throttle stick is at the minimum position
(Recommended for folding props).
* OFF- Sets the propeller to freewheel when the throttle stick is at the minimum position.
2.Battery type: LiPo or NiCad/NiMh
* NiCad/NiMH – Sets Low Voltage protection threshold for NiCad/NiMH cells.
* LiPo – Sets Low voltage protection threshold for LiPo cells and automatically detects the number of
cells within the pack.
Note: Selecting the NiCad/NiMH option for the battery type, triggers the ESC to automatically set the
cutoff threshold to the factory default of 60%. The cutoff threshold can then be subsequently altered
through the Low Voltage protection function, if required. The ESC will read the initial voltage of the
NiCad/NiMh pack once it is plugged in and the voltage read will then be used as a reference for the cutoff
voltage threshold.
3.Low Voltage Protection Threshold ( Cutoff Threshold ):
Low / Medium / High
1) For Li-xx packs- number of cells are automatically calculated and requires no user input apart from
defining the battery type. This ESC provides 3 setting options for the low voltage protection threshold ;
Low (2.8V)/ Medium (3.0V)/ High (3.2V). For example : the voltage cutoff options for an 11.1V/ 3 cell
Li-Po pack would be 8.4V (Low)/ 9.0V(Med)/ 9.6V(High)
2) For Ni-xx packs-low / medium / high cutoff voltages are 50%/60%/65% of the initial voltage of the
battery pack.. For example: A fully charged 6 cell NiMh pack’s voltage is 1.44V x 6=8.64V,when “LOW”
cutoff voltage is set, the cutoff voltage is: 8.64V x 50%=4.3V and when “Medium” of “High” is set, the
cutoff voltage is now 8.64V X 65%=5.61V.
4. Restore factory setup defaults:
Restore- Sets the ESC back to factory default settings;
Brake：OFF
Battery type Detect：LiPo with Automatic Cell
Low voltage Cutoff threshold：Medium (3.0V/60%)
Timing Setup：Automatic
Soft Acceleration Start Up：Soft Acceleration
Governor Mode ：RPM OFF
Frequency ：8kHz
Low Voltage Cutoff Type：Reduce power
5.Timing Setup : Automatic/ Low / High.
* Automatic (7-30 deg) – ESC automatically determines the optimum motor timing
* Low (7-22 deg) – Setting for most 2 pole motors.
* High(22-30 deg)-setting for motors with 6 or more poles.
In most cases, automatic timing works well for all types of motors. However for high efficiency we
recommend the Low timing setting for 2 pole motors (general in-runners) and high timing for 6 poles
and above (general out-runners). For higher speed, High timing can be set. Some motors require
different timing setups therefore we suggest you to follow the manufacturer recommended setup or use
the automatic timing setting if you are unsure.
Note: Run your motor on the ground first after making any changes to your motor timing!
6.Soft Acceleration Start ups: Very Soft / Soft Acceleration/ Start Acceleration

3
* Very Soft – Provides initial slow 1.5 sec ramp-up from start to full rpm intended to protect delicate
gears from stripping under instant load. This setting is recommended for either fixed wing models
equipped with gearboxes and / or helicopters.
* Soft Acceleration- Provides initial slow 1 sec ramp-up from start to full rpm. This setting is
recommended for either fixed wing models equipped with gearboxes and or helicopters.
* Start Acceleration – Provides quick acceleration start ups with a linear throttle response. This is
recommended for fixed wing models fitted with direct drive setups.
7.Active RPM Control (Heli Governor mode)
* RPM Control OFF
*First Range: There will be a 5-second delay from start to full rpm, but if the throttle is cutoff after
starting, then the next start will be as normal start.
*Second Range: There will be a 15-second delay from start to full rpm, but if the throttle is cutoff after
starting, then the next start will be as normal start.
Note: Once the Governor Mode is enabled, the ESC’s Brake and Low Voltage Cutoff Type settings will
automatically be reset to No Brake and Reduce Power respectively regardless of what settings they were
previously set.
8.Motor Rotation: Forward/ Reverse
In most cases motor rotation is usually reversed by swapping two motor wires. However, in cases where
the motor cables have been directly soldered the ESC cables, motor rotation can be reversed by
changing the value of setting on the ESC.
9.Switching Frequency : 8kHz/16kHz
* 8kHz – Sets ESC switching frequency for 2 pole motors, e.g. in-runners.
*16kHz – Sets ESC switching frequency for motors with more than 2 poles, e.g. out-runners.
Although 16kHz is more efficient with our Thrust motors, the setup
default is 8kHz due to the higher RF noises caused at 16kHz.
10.Low Voltage Cutoff Type : Reduce Power / Hard cutoff
* Reduce Power – ESC reduces motor power when the pre-set Low Voltage Protection Threshold value
is reached. (recommended)
* Hard Cutoff – ESC instantly cuts motor power when the pre-set Low Voltage Protection Threshold
value is reached.
Programming Mode Audible Tones
Programming Mode Audible Tones ESC Functions
Throttle Calibration
(within the first 4 Sec )●● ●● ●● ●●
1 Brake
_
* _ * _ * _ * Brake On /Of
f
2 Battery type
～～～～NiCad
～～ ～～ ～～ ～～
LiPo
3 Low Voltage Cutoff Threshold
*_ _* *_ _* *_ _* *_ _* Low2.8V/50%
*_ _ _* *_ _ _* *_ _ _* *_ _ _* Medium3.0V/60%
*_ _ _ _* *_ _ _ _* *_ _ _ _* *_ _ _ _* High3.2V/65%
4 Restore Factory Setup Defaults
— — — — Restore
5 Timing Setup
– – – – Automatic
(7-30°)
–– –– –– –– Low
(7-22°)
––– ––– ––– ––– High
(22-30°)
6 Soft Acceleration Start Ups

4
∨∨ ∨∨ ∨∨ ∨∨ Very Soft
∨ ∨ ∨ ∨ Soft Acceleration
∨∨∨ ∨∨∨ ∨∨∨ ∨∨∨ Start Acceleration
7 Governor Mode
_
*_ _*_ _*_ _*_ Rpm of
f
_
**_ _**_ _**_ _**_ Heli first ran
g
e
_
***_ _***_ _***_ _***_ Heli second ran
g
e
8 Motor Rotation
W W W W Forward
/
Reverse
9 Switching Frequency
/
/ // // // 8kHz
\
\
\
\
\
\
\
\
16kHz
10 Low Voltage Cutoff Type
＿ˉ＿ˉ＿ˉ＿ˉReduce Power
ˉ＿ˉ＿ˉ＿ˉ＿Hard Cut Of
f
Using Your New ESC
Improper polarity or short circuit will damage the ESC therefore it is your responsibility to double check
all plugs for proper polarity and first fit BEFORE connecting the battery pack.
Alert Tones
The ZTW ESC is equipped with audible alert tones to indicate abnormal conditions at power up.
1. Continuous beeping tone (****) – Indicates that throttle stick is not in the minimum position.
2. Single beeping tone followed by a one second pause (* * * *)– Indicates that the battery pack
voltage exceeds the acceptable range. (The ESC automatically checks and verifies the battery voltage
once the battery is connected).
Built-in Intelligent ESC Safety Functions
1. Over-heat protection: When the temperature of ESC exceeds 110 deg C, the ESC will reduce the
output power to allow it too cool.
2. Lost Throttle signal protection: The ESC will automatically cut power to the motor when it detects
a lost of throttle signal for 2 seconds, then the motor will emit continuous beeping tone.
POWERING UP THE ESC FOR THE FIRST TIME & SETTING THE AUTOMATIC THROTTLE
CALIBRATION
The ZTW ESC features Automatic Throttle Calibration to attain the smoothest throttle response and
resolution throughout the entire throttle range of your transmitter. This step is done once to allow the
ESC to “learn and memorize” your Transmitter’s throttle output signals and only repeated if you change
your transmitter.
1.Switch your Transmitter ON and set the throttle stick to its maximum position.
2.Connect the battery pack to the ESC. Wait for about 2 seconds, the motor will beep for twice, then put
the throttle in the minimum position, the motor will also beep, which indicates that your ESC has got the
signal range of the throttle from your transmitter.
The throttle is now calibrated and your ESC is ready for operation.
ENTERING THE PROGRAMMING MODE
1. Switch your Transmitter ON and set the throttle to its maximum position.
2. Connect the battery pack to the ESC.
3. Wait until you hear two short beeps (●● ●● ●● ●●) confirming that the ESC has now entered the
programming mode.
4. If the throttle stick is left in the maximum position beyond 5 seconds, the ESC will begin the
sequence from one function and its associated setting options to another. (Please refer to the table
below to cross reference the functions with the audible tones).
5. When the desired tone for the function and setting option is reached, move the throttle stick down
to its minimum position. ESC will emit two beeps (**) confirming the new setting has been stored.
6. The ESC only allows the setting of one function at a time.
Therefore should you require making changes to other function, disconnect the battery