Description
Automatic power-pack – CREEP’R
Specialized control system for creep frames
Creep’R is a dedicated control system for hydraulic creep testing machines used in civil engineering and other materials. It can be used to control a battery of creep machines, with load and deformation measurement, controlled loading and automatic charging for long-term tests, in accordance with the NF EN 12390-17 (2019) standard: loading in less than 30 sec., automatic control and reloading.
Features of the Creep’R control panel
- Rack made of mechanically welded sheet metal assembly, height 130 cm
- Logic module 24 logic inputs, 16 logic outputs
- Hydraulic pump control drive to control flow (up to 6L/min)
- Wired remote control, with buttons opens, closes, preloads,
charging
- Multi-piston hydraulic unit (reliability, regularity and silence), mounted on silentblocks, with external level and temperature indicator
- Hydraulic ball valves for pressurizing the hydraulic bus
- Stainless steel tank – capacity 40 liters
- 400 bar pressure sensor, accuracy 0.5%MS
Console features
- 10’’ touchscreen – Resolution 1024×600 px (223x126mm)
- 10/100 ethernet port for Man-Machine-Interface console
- CPU 32 bits – ARM clocked at 1 GHz
- USB Drive Data Recovery
- Remote Onboarding for Training, Configuration, and Maintenance
- Backup of tests and confi guration, on a USB stick
- Barcode reader (optional) for reading the identification of the sample to be tested
Software features
- User identifi ed by name (list) and password.
- An unidentifi ed user (visitor) can only view the trials in progress.7 levels of users restricting access to certain settings.
- Machine confi guration settings.
- Definition parameters of the sample to be tested
- Preload control using the remote control, as close as possible to the machine.
- Loading up to the nominal stress in less than 30s, in accordance with the standard.
- When the nominal stress has been reached, the Creep’R regularly checks the force exerted and automatically adjusts if necessary
- The load and strain (if equipped with displacement sensors) measurements of each machine are recorded automatically.
- Possibility of remote control via the internet
Creep frames
Up to 6 racks can be connected to a single console & console unit via a measurement bus and a hydraulic bus
- Each machine is equipped with :
- A control block that can be attached to the frame, or remote when used in a thermal chamber
- An hydraulic accumulator to maintain the load, maximum pressure 350 bar, capacity 1 liter.
- Optionally, a second accumulator in order to extend the range of use of the machine.
- A measuring conditioner for load cells, resolution 500 000 points, accuracy 0.003%MS
- One CAN output, CANOpen protocol.
Test frame
- Fully machined 3 or 4 threaded columns frame to accommodate specimen size
- Treated steel plates, single acting cylinder force 100 to 2 000 kN with low friction, stroke 50 mm
- Load cell, accuracy 0.023%MS
- Optional (for compression creep tests) : 2 multi-magnet magnetostrictive sensors, 4 measuring points per sensor, 2μm resolution, allow to measure the deformation of 2 superimposed specimens, following 2 opposite generators, using glued pads.
