Futaba SBS-01RM User Manual

1M23N26707

Detector

RPM sensor

（Magnet type）

SBS-01RM

Instruction Manual

Thank you for purchasing Futaba's SBS­01RM RPM sensor. This sensor, used
in conjunction with a telemetry enabled
transmitter/receiver, is used to indicate the
number of rotations (engine, a motor, etc. ) of
the item to which it is attached. The number
of rotations of a model in the sky is a system
which can be checked with a transmitter
etc. To maximize your enjoyment, and to
ensure proper sensing, please read through
this manual thoroughly. We also encourage
you to retain the manual for future reference
should the need arise.

●The SBS-01RM is designed for use
with Futaba telemetry systems.

CONTENTS

Magnets × 2

Screw × 2
Nut × 2

Spring washer
×2

Washer ×4

Sensor

（Futaba's governor sensor）

LED

SBS-01RM

Sensor

Surface of

rotation

Use : RPM Sensor
Length：255mm
Weight：4.7g
Voltage : DC3.7 ～ 7.4V
Range : 360 ～ 100,000RPM

● LED Indication

Red

: Sensor/magnet check

: S.BUS2 signal check

Green

LED

Green Red

OFF ON

ON OFF

ON ON

OFF OFF

Alternate

No signal reception. Magnet not detected.

Signal ON. Reading the magnet.

Signal ON. Magnet not detected.

When setting up the slot.（1 second）

No signal reception. Reading the magnet.

blink

To receiver S.BUS2 port

Magnet

PC Board

＜ SBS-01RM ＞

Operation

OFF

Unrecoverable error.

WARNING

󾾝

To utilize the SBS-01RM sensor, connect it to

󾾙

the S.BUS2 por t of the F utaba tel eme try

enabled receivers.

■ The SBS-01RM will not function properly if connected to an

S.BUS port or other channel ports.

Be careful of the connector polarity.

󾾙

■ Because of the case construction, reversing the polarity

may cause trouble or sparking from the wiring.

Don't touch a sensor during engine motor

󾾛

rotation.

■ When a rotation portion is touched, there is a possibility of

carrying out a large injury.

Mount the sens or in acc orda nce with the

󾾙

installation method described below.

■ If the SBS-01RM drops out during flight, it cases erratic

operation or loss of control.

Vibration-proof the PC board and mount the

󾾙

SBS-01RM where it will not be exposed to fuel

and water.

■ Electronic parts are used at the PC board. Take protective

measures against vibration, shock, high temperature, and
so forth.

Whe n m ou nti ng th e SB S- 01 RM to th e

󾾙

fuselage, be sure there is some slack in the

wiring cable.

■ If the cable is too tight, vibration may cause the wire

to break or the connector to be dislodged and cause a
malfunction.

Alw ays p erfo rm an oper ation check afte r

󾾙

assembling.

■ Do not fly until inspection is complete.

Do not use the SBS-01RM with anything other

󾾛

than an R/C model.
Don't attach the magnet to a propeller.

󾾛

■ A propeller is damaged and there is a possibility of carrying

out a large injury by a scattering thing.

Do n't ma ke d if fer en t con necti on fro m a

󾾛

manual.

■ It will break down, if different connection is made.

● Receiver connection

The SBS-01RM may only be used with
telemetry enabled receivers that offer S.BUS
2 port(s). Please refer to the manual(s) that
accompanied your transmitter and/or receiver
for proper connection methodology.

The following checks and
subsequent mounting of the
magnet are performed with
the transmitter turned OFF.

Magnet

There are two sides (poles) to the
magnet, to properly install the magnet
the correct side (pole) of the magnet
must be facing the sensor.
To determine the correct orientation,
plug the SBS-01RM into the receiver
and power the receiver up. The LED on
the SBS-01RM will glow red.
Next bring the magnet within 2mm of the
sensor, if the correct side is facing the
sensor the LED will turn off. It it remains
lit, turn the magnet over to assure it
turns the LED off. Mark this side of the
magnet with a permanent marker to use
as reference during installation.

Less than 2 mm

Magnet

Bring the magnet within
2mm of the sensor.

The LED will turn off if the correct
side of the magnet is facing the sensor.

Battery

S.BUS2
port

(S.BUS2）

Receiver

©FUTABA CORPORATION 2012, 3 (1)

● Sensor/Magnet Mounting

Magnet

Surface of

rotation

Engine（Motor）

The distance between the sensor and the
magnet must be 1-2mm.

Embedding

Sensor

Mounting the magnet

Drill a hole with a 4.1mm
diameter 1.5-1.7mm deep
to mount the magnet. Use
a non-metal bearing epoxy
adhesive to secure it in place.

● Slot number setup

Please note that the proper default slot for this
accessory is number 2. Information on how to
change the slot assignment is included in the
transmitter's manual.

1080 Yabutsuka, Chosei-mura, Chosei-gun, Chiba-ken, 299-4395, Japan

Phone: [phone], Facsimile: [phone]

FUTABA CORPORATION

INSTALLATION

Sensor

Sensor
Mounting
Bracket

（Option）

Magnet

1〜2mm

Surfaceof
rotation

Assure that the
centers of the sensor
and magnet line
up perfectly during
installation.

（Option）

2.2

3.73.7

● Operation Check

Power up the receiver (transmitter off) with the
SBS-01RM connected to the S.BUS2 port of
the receiver. Move the magnet so that it aligns
with the sensor. If the LED on the SBS-01RM
turns off the installation is correct.

Nut
Washer
Sensor
Bracket
Washer
Spring washer
Screw

Sensor Mounting
Bracket

Centeroffset

Sensor
case

point