Description
The FUTABA S-U400 is an inexpensive S.BUS2 HV universal servo. With 8kgcm actuating force and 0.14s / 60° actuating speed, the S-U400 is positioned above the S-U300 in terms of power and is predestined for applications in RC cars, boats and model aircraft. The S-U400 replaces the previous servo types S3010, S3152 and S3072HV.

Programmable through S.BUS2 technology. All S.BUS2 servos can of course be connected to conventional receivers with PWM modulation. The servos can be addressed in different ways:

1. with the handy programmer SBC-1
2. on the PC with the USB adapter CIU-3
3. at the S.BUS connector of the transmitter

The following parameters can be set:
- S.BUS channel assignment
- Servo reverse polarity
- Servo type (normal / retractable landing gear)
- Soft start (On / Off)
- Mode selection on loss of signal Hold or Free
- Soft servo run (on / off)
- Servo position (servo tester)
- Servo center adjustment +/- 300 µs (approx. 30 degrees)
- Servo speed, 0.39 - 9 seconds per 45 degrees
- Setting the deadband
- Servo travel adjustment left and right separately, approx. 50 - 175%
- Starting force
- Attenuation
- Holding force
- ID storage

Technical data
Setting speed 60°: 0.14 s (8.4V)
Operating torque: 8.0 kgcm (8.4 V)
Operating voltage: 4.8 - 8.4 V
Weight: 40 g
Dimensions: 40 x 20 x 38.1 mm

Features
Powerful S.BUS2 digital servo with plastic gear
Hi-Voltage
Low wear potentiometer
Robust plastic housing
High resolution
High positioning accuracy