Automatic Power Pack with Servo Valve

The TC-4870 and TC-4880 Automatic Power Packs with Servo- Valve, are advanced power packs can be used on any testing system ideal for R&D laboratories and Universities for advanced tests with P.I.D. Closed loop control. It can perform tests under load and displacement controls. The frequency of the P.I.D controller and data acquisition is 1000 Hz. TC 4870 automatic power packs are designed to supply the required oil to the load frames for loading, unloading or low cycle dynamic testing.

All the operations of Data Acquisition and Controls System can be controlled from the touch screen front panel of a 240 x 320 LCD display or computer. The TC-4870 can control up to 2 different frames and TC-4880 up to 4 frames. There is one load cell (or pressure transducer) input and one displacement transducer input for control. There are an extra three analogue channels for other sensors such as load cells, pressure transducers, displacement transducers etc. built in the system.

The power pack automatically controls and supplies oil to the frame which is chosen by the user via the touch screen LCD digital control unit or by choosing the test type from the computer software. The type of displacement transducer can be TTL or analogue. (It must be same type for all frames).

The main specifications of the TC-4870 and TC-4880 power packs are:

• Up to 5 litre/minute pump delivery (max) 280 bar 3 kW motor rate
• Loading-unloading with ± 0,5% rate accuracy
• Staying at constant load within 0,005% accuracy of the maximum load
• The control of the load starts from 0,3 % of the maximum load capacity of the system

Both power packs can be connected to the computer through Ethernet port for advanced test cycles, data acquisition and

reporting. The modulus of elasticity, Poisson’s Ratio and compressibility parameters is easily and properly evaluated by attaching displacement transducer or extensometers on to the sample.

All the calibration values of the transducers and also all the test parameters for the last test is automatically stored on the control unit. All power packs incorporate a pressure safety valve for each frame separately and a cooling unit.

Key Features

• Pace rate control from 0.01 kN/s to 100kN/s (depend on the specimen stiffness)
• 3 analogue channels for displacement transducers, extensometers, etc. built in the system as an addition to frame load cells/pressure transducers
• Instrumentation amplifiers for sensor excitation and amplification
• 1/65.000 resolution and 1.000 Hz control for each channel
• Ethernet port for connecting to computer
• 240×320 pixel LCD display
• Touchscreen operator panel
• Can control 2 frames (TC-4870) or 4 frames (TC-4880)
• Can execute load, displacement or strain controlled tests. For post peak applications TC-4870 must be selected.
• Free of charge PC software for test control and advanced report printout
• Multiple language support
• Real-time clock/date

Software

Advanced Power Pack can be controlled (Start, Stop commands) by a computer with the software (provided free of charge). This software provides data acquisition and management for compression, flexure and splitting tensile test throughout the test execution for TC-4850 and TC-4860 advanced power packs. The software is capable of running the machine in load control, displacement or strain control.

• Foreign Language Support and Customisable User Interface
• Capability to save 24 test results of different specimens in one test folder
• Graphical data on the screen is refreshed simultaneously during test procedure
• Able to save frequently used texts in memory and recall them when necessary
• Capable to access and use previously done test data
• Able to edit test parameters of the testing equipment through software
• Graphical outputs and reports can be saved as a MS ExcelTM worksheet
• Maximum flexibility to edit report and graph templates

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