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OCA-3070HV
OMA-5015-650
OMA-5020-490
C
Copyright 2021 by O.S.Engines Mfg. Co., Ltd. All rights reserved.
102100
OCA-3100HV
OCA-3070HV
70/F3A
OMA-5020-490
OMA-5025-375
OMA-6030-220
OMA-4043-165
OMA-4043-172
OMA-5025-375
OCA-3100HV
OCA-3070HV
High-Resolution
OPT
O55V
12S
OCA-3100HV
High-Resolution
OPT
O55V
12S
Pay careful attention to the advices with the following headings.
DANGER
This covers the possibility which
might involve death and serous
injury.
These cover the possibilities
which might involve death and
serious injury and also may cause
damage or injury.
WARNINGS
NOTES
T h e s e c o v e r t h e m a n y o t h e r
possibilities, generally less obvious
source of danger, but which, under
certain circumstances, may also
cause danger or injury.
Graphic symbols:
Prohibited items
Items never fail to take action
TEL. (06) 6702-0225
FAX. (06) 6704-2722
6-15 3-Chome Imagawa Higashisumiyoshi-ku
Osaka 546-0003, Japan
IMPORTANT: It is of vital importance, before attempting to
operate your ESC to read through this instruction manual.
INSTRUCTIONS
ESC for airplane brushless motors
Before using OCA-3100HV/OCA-3070HV
Misuse or abuse of LiPo batteries is very danger-
ous.
Be sure to follow the instruction manual supplied
with the batteries.
Notes on installation
WARNINGS
Never use the ESC beyond the working conditions listed in the
specifications listing.
Do not mistake the polarity of the batteries.
Reverse connection may cause fire and ESC will be damaged or be burnt
instantly.
Never short out any place of the ESC, batteries, motor,
receiver and connectors.
Short circuit may cause fire and ESC will be damaged or be burnt instantly.
Be sure to install the ESC so that the soldering connection of the
input/output wires may not touch conductive part.
Be sure to install the receiver and receiver antenna away from
the place where high current flows such as ESC, motor wires,
battery wires, power batteries.
Malfunction of the receiver due to noise will cause to lose model control
which is very dangerous.
Be sure to insert connectors all the way securely.
Disconnection due to vibration may cause to lose model control which is
very dangerous.
Be sure to install the ESC so that oil, grease and water may
not come in contact with the ESC.
Be sure to install the ESC at the place where there is plenty of
air flow for cooling.
Do not wrap the ESC with aluminum foil, etc.
Wrapping may spoil cooling effect and the ESC may not develop its original
performance.
Be sure to install the motor securely and fix all the wires.
NOTE
Do not disassemble. Do not open the ESC case.
Opening of the case may cause damage inside components and render it
irreparable.
Notes on operation
WARNINGS
Never touch or allow any part of the body to come into contact
with any rotating part while operating.
Sudden rotating may cause serious
Be careful with some receivers the motor may rotate for a moment when
the power puts on.
Do not fly when rainy.
Entry of water drops into the ESC may cause malfunction and out of model
control which is very dangerous. Also, it will cause failure. If malfunction is
detected due to entry of water drops, send the ESC to the manufacturer or
its distributor in each country for inspection and repair.
Be sure to follow the procedures mentioned below as to ON
and OFF of the power switch.
ON:
Hold the throttle stick at stop position. Switch on
the transmitter then
receiver
power.
OFF:
Hold the throttle stick at stop position. Switch off
the receiver then
transmitter
power.
With reverse procedure propeller may rotate suddenly, which is very
dangerous.
Be sure to remove the batteries when not in use.
Accidental switching on may cause sudden rotating of propeller or cause
fire, which is very dangerous.
Be sure to check the ESC and all the movements of model
controls before attempting flight.
Incorrect settings or using of unsuitable model may cause to lose model
control which is very dangerous.
NOTE
Do not touch the motor nor ESC right after flight.
Touching them may cause burn.
OCA-3100HV/OCA-3070HV are ESCs for airplane
brushless motors.
For optimum performance of the ESCs, we
recommend you to choose OS brand brushless
motors.
Motors other than OS brand may not work
properly with the ESC.
Use the ESC with combination of OS motors
listed in this manual.
Solder suitable connectors to the lead wires of
the ESC to connect a battery.
Do not connect the connectors without
soldering to a battery.
Active Freewheel (regenerative braking system)
Setting choice : OFF / ON
Default setting : OFF
Setting range : OFF / 40
~
120
%
Select ON or OFF with the LEFT and the RIGHT buttons.
The “Brake Mode” activates when the throttle stick is moved up to
30% or more.
Current limit
Set the value with the LEFT and the RIGHT buttons.
This parameter regulates excessive current for energy saving and
reducing heat emission.
Default setting : 100%
Setting range : OFF / ON
Default setting : OFF
Governor settings
Select ON or OFF with the LEFT and the RIGHT buttons.
When you use the governor, select ON and decide the values of
the following items to set the governor gain.
Motor Type
Setting choice : Standard value / OMA-4013/OMA-6030/
OMH-4535
Select the value with the LEFT and the RIGHT buttons.
Select Standard value usually.
Throttle Mode
Setting choice : Automatic / set value
Set the value with the LEFT and the RIGHT buttons.
Select the setting item with the UP and the DOWN buttons.
When you do not choose “Automatic” and set the value:
PWM value for throttle stop position: 800~1200
PWM value for maximum throttle position: 1800~2200
Restore Default
Setting choice : NO / YES
Default setting : NO
Select NO or YES with the LEFT and the RIGHT buttons.
In case you select YES, press the RIGHT button again to confirm
to restore Default settings.
Select the setting item with the UP and the DOWN buttons.
Class
Motor
ESC
Specifications, design, and contents of the instruction manual
of the motorare subject to change without prior notice for
improvement.
Please contact
professional
@
os-en
gines.co.jp
for questions and inquiries.
Minimum rotation position setting: Min Speed 1~25
Maximum rotation position setting: Max Speed 1~25
Minimum rotation position setting is the rpm when a throttle stick
is at full low position.
Maximum rotation position setting is the highest rpm setting.
Setting range : 10%
~
40%
Default setting : 20%
Governor Gain setting
Set the value with the LEFT and the RIGHT buttons.
The larger the value is set, the more the motor rpm increases.
Start from 20% then find your best setting.
Setting range : 1
~
25
Default setting : 1
Min Speed setting
Set the value with the LEFT and the RIGHT buttons to decide
the timing when the governor starts to work.
The governor starts to work the earliest at 1. At 25 it starts the
latest.
The value is usually set 1 unless you want to change it.
Setting range : 1
~
25
Default setting : 8
Max Speed setting
Set the value with the LEFT and the RIGHT buttons.
This is to set the speed to reach the maximum rpm according to
the throttle move.
The rpm rises linearly at 8 to the maximum rpm, but it depends
on how the throttle curve is set. Reduce the value in case the
rpm reaches the maximum rpm before full throttle.
Increase the value in case the rpm does not reach the
maximum rpm even full throttle.
[Recommended Motor/ESC classified by airplane class.]
Electric current depends on combination of battery cells and size
of propeller.
Read instructions of O.S. motors carefully before use not to apply
excessive electric current more than its capacity to the ESC.
Note:
The governor system of this ESC does not
conform to FAI F3A regulations.
Disable the function when you participate in the
competitions based on FIA F3A regulations.
(Disable the function for FAI F3A competitions.)
