Battery connection
The regulator can be connected by JST connectors to the battery. Please make sure the polarity is correct
when you connect the battery. ( If you connect the +/- polarity reversed, internal circuit will be destroyed.)
When charging and checking voltage, you could use female connector. While for dual battery, you could use
male connector to connect battery instead of female connector. After you connect the battery, when you turn
on the switch, if a short sound like beep is heard, that means the Low Voltage Alarm is activated.
Receiver & Servo channel connection
There are four pieces of JR type female-female extension in the box. Please use them to connect the receiver
and the receiver channel on the regulator. The regulator supplies 5.0V voltage to the receiver and the
receiver will respond the signal to the servo channel of the regulator. The servo will respond to the servo
channel of the regulator from CH1 to CH4. In this case, the regulator supply power to the receiver then to
servo.
Low Voltage Alarm LED
Power on LED
3mm Hole for Fixing
Setup output voltage of servo channel
The DIP switch which is used to setup the output voltage of servo channel is on the back of the item. There
are four selections 4.8V, 6.0V, 6.8V and 7.4V which can be selected by four switches No 1 to 4 with ON and
OFF position. Please pay attention when switch No.1 to 5 are OFF position, the output voltage is
8.4V(Bypass).
Setup low voltage alarm
The switch No 5-6 is used to set up the low voltage is on the back of the item. The selectable voltage is 7.3V
for LiPo and 6.5V for LiFe. When the battery voltage falls below the regulator setup voltage, the LOW/BATT
LED and the buzzer will begin to work at the same time. If you want to disable the Low Voltage Alarm
function, please turn off both No 5 and 6 switch.
Switch connection
The power switch is Fail-safe-on Pin-flag switch. It could be connected to the SW port of the regulator. When
Pin-flag on the switch board is pulled out, that means the power is turned on.
Pin
-
Flag Power
Switch
Pin-Flag Power Switch(SK-600052) is an integrated switch which features “Low-voltage alarm LED” .The
power of “Low-voltage alarm LED” is one watt. The high power flux LED Provides day light visibility up to 200
meters away.
It is not necessary to use a switch as the unit uses Fail Safe “On” system, meaning it will automatically power
up when plugged to the batteries if no switch is attached.
Please find a place with good airflow to install the regulator
Don't put any electronics on the heat sink of the regulator.
Due to the vibration during flight, please make sure the servo, and cable are fixed well to the regulator.
Don't disassemble the regulator by yourself or you will not enjoy our free repair service.
The regulator still consumes small current even if the regulator is OFF. So please disconnect the
battery to the regulator if you don't use it.
WARNING AND SAFETY NOTES
7504-0253-02
Manufactured
by
SKYRC
TECHNOLOGY
CO
.,
LTD
.
www
.
skyrc
.
com
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3
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4
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INSTALLATION
Factory default setting
5.2V
6.0V
6.8V
7.4V
5.2V
6.0V
6.8V
7.4V
5.2V
6.0V
6.8V
7.4V
5.2V
6.0V
6.8V
7.4V
5.2V
6.0V
6.8V
7.4V
5.2V
6.0V
6.8V
7.4V
DU
AL PO
WER
REGULA
T
OR-HELI
R
E
C
E
IV
E
R
S
E
R
V
O
AU
X
SW
1
2
3
4
1
2
3
4
P
ow
er
1
P
ow
er
2
Lo
w
/B
at
t
Pin
-
Flag Power
Switch
Pin-Flag Power Switch Connection:
Switch Channel (SW)
Signal White wire
+ Red wire
- Black wire
AUX Channel (A)
Low Voltage Signal Yellow wire
REMOVE BEFORE FLIGHT
1.
2.
3.
Switch board could be fixed by double-side foam tape or cable. You could also use the hole in the
center of the board and fix it with a 3mm bolt.
Even if the switch is off, there is still small current in it. Please disconnect the battery with the
regulator when you don't use it.
Note 1
Note 2
Fully charged battery wouldn’t usually drop to alarm voltage (7.3V for LiPo) for normal servo load at
ambient temperature (22C). Thus is low voltage alarm is active 1 or 2 times after charging,
degradation of battery or wiring condition should be checked. But the cold season, due to the
characteristics of battery, the voltage drops will happen more oftenly. So we suggest you use large
capacity battery or high discharge rate battery in cold season. We also suggest set up the low voltage
to 6.5V in this season.
When you set up the low voltage to 7.3V (for LiPo) or 6.5V (for LiFe), the Low Voltage Alarm function
may be activated at 7.2V or 6.4V. The tolerance is about 0.1V. Concerning to different product, the
voltage for Low Voltage Alarm occurs is slightly different.
Sometimes the reverse electromotive force may case Low Voltage Alarm. When a servo motor is
connected to the regulator reversely, the servo may move quickly even if the switch is off and the Low
Voltage Alarm will work in this case due to the reverse electromotive force. What's more, the Low
Voltage Alarm is also effected by electromagnetic wave or electromagnetic field. For example, when
the transmitter antenna or oscillator is close to the low voltage alarm circuit, the low voltage alarm will
be activated. Please don't worry when this case occurs and it is not a breakdown and you still could
use this regulator.
Note 1
Note 2
Note 3
4.
5.
If the four servos are the same, when the operating voltage is the same, the servo channels can be
connected directly.
If the four servos are different, and you use three CCPM (6.0V ) and one throttle servo (4.8V), you need
to use a governor with it. What's more, the throttle servo must be connected to the receiver directly.
There are two independent circuits to output to the receiver (5.2V) and to the servo channel (5.2-
8.4V). The output voltage is quite different between these two circuits, so if you connect the cables
wrongly, the regulator may not work.
Note 1
Note 2
Note 3
