Page 4 - Shimadzu NJ-SERVO

The NJ-SERVO electric motor driven actuator utilizes an electric motor The Performance Required for Endurance Tests
drive system. —High Accuracy, High Speed, and Stable Control—

High accuracy test control is enabled by a special servo motor and stroke displacement measurement sensor. The same test force capacity is guaranteed in static tests and dynamic tests.

In addition, the system configuration is simpler in comparison to hydraulic actuators, so it is easy to The system accommodates everything from static to dynamic tests across the full
actuator capacity range. The test conditions can be set as you wish.
maintain, and achieves power savings and space savings.
High speed tests at up to 72 cm/sec are supported.
This system accommodates a wide range of tests with a high degree of expandability. This includes High speed control is achieved at 72 cm/sec in single wave
tests and 50 m/sec in continuous endurance tests.
everything from endurance evaluations of the main body and assemblies of automobiles, aircrafts, and
It can be applied to a variety of tests at low to high speeds.
other transportation equipment to endurance evaluations of stand-alone parts; from multi-axis tests
The system achieves high peak reproducibility,
combining multiple actuators to uniaxial tests; and from sine waves to working waveform simulation tests.
and high accuracy measurement and control.
High accuracy measurements are achieved thanks to the built
in stroke sensor and a special load cell for dynamic testing.
High stability test peaks are achieved thanks to the high
response control of the 4830 controller.

High Accuracy Minimum Space Savings Power Savings High Expandability
Measurement and Maintenance
Control Required
Power Savings of Approximately 75%
Test Force: ±1kN, 5kN, With the electric motor driven system, hydraulic oil replacement is —Power Savings and Eco-Friendly Operation—
10kN, 20kN, 30kN not required. Thanks to its power saving operation, running costs
and CO2 emissions are reliably suppressed.
Accuracy: ±0.5% indicated value
The electric motor driven actuator only uses the power Approx.
The same test force capacity Just connect the power supply and the servo amplifier to start output required for each test, so power consumption is 75 %
is guaranteed during static testing immediately. substantially reduced in comparison to hydraulic Approx. reduction in
power
tests and dynamic tests. Hydraulic hoses and hydraulic power supplies are not required. actuators with similar specifications. 6.1 kW consumption
The system is easy to move and change.
If a 10 kN system is used, power consumption can be
reduced approximately 75%, and CO2 emissions can be Approx. Approx.
1.3 kW
Stroke Accuracy: ±1% indicated value reduced approximately 305 kg. Hydraulic Electric Motor Type 305 kg
When implementing 7 day testing with a displacement of ±40 mm and a test force of ±2.3 kN
reduction in
A high accuracy stroke sensor is built in. Power conversion factor: 0.378 kg-CO2/kWh CO2 emissions
During actual use, power consumption will differ depending on the installation conditions and
the room temperature.
Maximum Speed at Maximum Loading:
72cm/sec (5, 10kN)
Stroke: ±100mm
Labor-Saving System Changes
A ball spline is utilized, so a complicated —Space Savings and Minimum Maintenance Required—
anti-rotation mechanism is not required.
The shape of the loading unit is simple, so
positioning during testing is easy. The electric motor driven actuator can be driven solely by a servo amplifier
and a controller.
In contrast to a hydraulic type testing system, thick hydraulic hoses and a
hydraulic power supply are not necessary. This saves on space, makes the system
easy to move, and simplifies testing system changes.
Naturally, it is motor driven, so there is no need for periodic replacement of
hydraulic oil, and hydraulic servo valve overhauls are not required.

Basic System
Electric jack unit (Option: Bracket mount and frame) + +
+ Servo amplifier
+ 4830 controller (Option: Software) Electric Servo Type Endurance Testing Machine + Servo Amplifier Servo Controller 4830
Trunnion Bracket
NJ-SERVO
4 Electric Motor Driven Actuator 5