RL-C21

Vibration control and data acquisition system

State-of-the-art vibration control and data acquisition system. The system is distinguished by simplicity, reliability and high safety standard. The controller has a modular scalable architecture, which allows the user to get from 1 to 32 input channels.

The configuration of RL-C21 system is flexible: it is determined by the user and can be modified at any time.

The most innovative techniques of digital signal processing are embedded in the system. All calculations and safety checks are run by a DSP directly in the controller. This feature provides the highest level of shaker protection.

The system enables running multishaker tests and successfully controls two- and three-axes shakers, as well as vibration shakers with up to 6 degrees of freedom.

The presence of a galvanic isolation in the input chains allows effectively protecting input chains from breaks.

RL-C21 is used with a specialized vibration test software package VisProbe SL.

Software

VisProbe SL

VisProbeSL v44 (x86)

See all versions

Specifications

Input

Input channels

1÷32
Sensor type

IEPE, TEDS, charge, displacement, velocity, force sensors
Filtration

Analog, digital high-pass and low-pass filters
Voltage range

±10 V
Dynamic range

≥ 120 dB
Noise level

< 20 mV
Channels crosstalk

≤ -100 dB

Output

Output channels

1 ÷ 8 control channels, Up to 8 COLA channels
DAC resolution

24 bits
Relative frequency error

≤ 5×10⁻⁵
Filtration

Analog filters, digital high-pass and low-pass filters
Dynamic range

120 dB

Other

Frequency range

0.1÷35000 Hz
Temperature range

+5 ÷ +50 °C
Dimensions

390×274×54 mm
Weight

2.3 kg
Power supply

110÷245 V

Electromagnetic Compatibility Directive 2014/30/EU

Low Voltage Directive 2014/35/EU

Frequently Asked Questions (FAQ)

VisProbe SL does not see the device. There is a message saying that the device has not been found.

Check the connection of Ethernet cable to the device and PC. Check if the device is loading. The words “RL-C21” should appear on the screen, and if you hold the “Stop” button for more than 3 seconds, it will display the information about the IP-address, serial number and the subnet mask. Another thing to check in case VisProbe SL does not see the device is whether Windows Firewall is enabled and whether there is an antivirus installed. They should be disabled.

Are the settings of channels and shakers, which I specify, saved?

The settings are saved to separate databases, and, having specified them once, you are able to use those in all tests.

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Can any problems occur due to the antivirus installed on my PC?

We do not recommend using anti-virus programmes on your PC when working with RL-C21. As the PC communicates with the devices through the network, the antivirus software may sometimes block the data transfer. In case the antivirus software is installed and cannot be deleted, we recommend adding VisProbe(SL) and the folder, to which it is installed, to the list of antivirus exceptions, or disable the protection.

There is high noise level on the shaker, caused by the product, which is operating on it outside the testing zone. How do I not take it into consideration during control?

If it is Sine test, you should set the “Synchronous detector” control algorithm for the control channel. In case of Random test, select the “in the task spectrum” parameter in the drop-down menu “RMS is calculated in…” of the “Control” tab.

RL-C21 and RL-C25. Sine test profile.

RL-C21 and RL-C25. Random test profile.

RL-C21 and RL-C25. Shock test profile.

RL-C21 and RL-C25. Mixed test profile.

RL-C21 and RL-C25. Channels settings.

RL-C21 and RL-C25. Shaker settings.

Graph functionality in vibration testing explained.

Education

How to mount accelerometers

To provide high accuracy of vibration measurement, the usable frequency and dynamic range must not be limited as a result of incorrect mounting of accelerometers. One of the basic requirements for correct sensor mounting is close mechanical contact between the accelerometer’s base and the mounting surface. To achieve it, you can use a wide range of various special applications for mounting. However, it is not that simple.

See more education materials

Multishaker tests in RL-C21 and RL-C25. Theory and application.

Multishaker tests have recently gained popularity for tests of large objects, which cannot be placed on one shaker, or for simultaneous vibration impact on the object on several axes. This approach allows imitating the actual vibration conditions of operation more closely.

See more education materials

VisProbe SL

VisProbeSL v44 (x86)

433.50 MB
VisProbeSL v44 (x64)

450.35 MB
See all versions

Vibration control and data acquisition system