Electric Motor Driven Actuator
The NJ-SERVO electric motor driven actuator utilizes an electric motor drive system.
High accuracy test control is enabled by a special servo motor and stroke displacement measurement sensor. In addition, the system configuration is simpler in comparison to hydraulic actuators, so it is easy to maintain, and achieves power savings and space savings.
This system accommodates a wide range of tests with a high degree of expandability. This includes everything from endurance evaluations of the main body and assemblies of automobiles, aircrafts, and other transportation equipment to endurance evaluations of stand-alone parts; from multi-axis tests combining multiple actuators to uniaxial tests; and from sine waves to working waveform simulation tests.
The same test force capacity is guaranteed in static tests and dynamic tests.
The system accommodates everything from static to dynamic tests across the full actuator capacity range. The test conditions can be set as you wish.
High speed tests at up to 72 cm/sec are supported.
High speed control is achieved at 72 cm/sec in single wave tests and 50 m/sec in continuous endurance tests. It can be applied to a variety of tests at low to high speeds.
The system achieves high peak reproducibility, 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.
The electric motor driven actuator only uses the power output required for each test, so power consumption is substantially reduced in comparison to hydraulic actuators with similar specifications. If a 10 kN system is used, power consumption can be reduced approximately 75 %, and CO2 emissions can be reduced approximately 305 kg.
- When implementing 7 day testing with a displacement of ±40 mm and a test force of ±2.3 kN
- Power conversion factor: 0.378 kg-CO2/kWh
- During actual use, power consumption will differ depending on the installation conditions and the room temperature.
The electric motor driven actuator can be driven solely by a servo amplifier anda 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.
Electric jack unit (Option: Bracket mount and frame)
+ Servo amplifier
+ 4830 controller (Option: Software)
Easier, More Convenient, and More Sophisticated
Thanks to highly responsive control and accurate waveform reproducibility, loads can be applied to products with high accuracy input waveforms.
Thanks to stable waveform input, the system is capable of endurance testing with high accuracy and high reproducibility, and the evaluation of slight differences in product performance.
-Capable of More Complicated Control and Storage of Test Results Thanks to a Variety of Software Programs-
Windows software for 4830 series
|Test Force||Dynamic||±5 kN||±10 kN|
|Static||±5 kN||±10 kN|
|Stroke (Full stroke)||±100 mm
Single wave: 72 cm/sec (unloaded)
Continuous: 50 cm/sec (unloaded, sine wave)
|Test Force||±0.5 % indicated value, or ±0.02 % of the load cell rating, whichever is larger|
|Stroke||±1 % indicated value, or ±0.1 % of the rating, whichever is larger|
|L0||1080 mm||1260 mm|
|L1||730 mm||750 mm|
|140 mm||140 mm|
|W x H x D||700 x 715 x 552 mm||700 x 1250 x 350 mm|
|Weight||Approx. 70 kg||Approx. 110 kg|
|Power Requirements||3-phase 200 V, 7 kVA
Single-phase 100 V, 1.5 kVA
|3-phase 200 V, 12 kVA
Single-phase 100 V, 1.5 kVA
|Compatible Controllers||Servo Controller 4830|
|Amplitude Characteristics||See amplitude characteristics diagrams.|