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VELOCITY VLM502

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Describes: VLM502 the ASTECH Company provides a contactless working gauge, especially designed for application with limited space. The VLM502 bases on the successful VLM500 series. Compared to the VLM500 the internal components were separated and put into two smaller housings. In the compactly structured gauge head (VLM502- O) the primary sensor and the illumination unit are covered. The subsequent data processing and data output is done in the evaluation unit (VLM502- E). In addition with the adaption of the receiving optics the size of the housing for the gauge head could be reduced significantly.

With the VLM502 the ASTECH Company provides a contactless working gauge, especially designed for application with limited space. The VLM502 bases on the successful VLM500 series. Compared to the VLM500 the internal components were separated and put into two smaller housings. In the compactly structured gauge head (VLM502- O) the primary sensor and the illumination unit are covered. The subsequent data processing and data output is done in the evaluation unit (VLM502- E). In addition with the adaption of the receiving optics the size of the housing for the gauge head could be reduced significantly.
The VLM502 measures lengths and velocities without contact independently from the material and due to its comprehensive interfaces it can easily be integrated into automation and quality assurance processes in different industrial sectors.

Nominal distance 85 mm
Working range max. ±15 mm
Measuring range 0.6 ... 3000 m/min
Measuring uncertainty1) < 0.025 % in nominal distance
Reproducibility1) < 0.025 %
Averaging-/Update-Time > 0.2 ms with additional 1 ... 32 times sliding average
Length measuring range Internal length range up to 2,000,000 km
Detector / principle CCD sensor / spatial filter with semiconductor grid as reference
Illumination White light LED (expected life span: > 5 years 2))
State indicator
(VLM502 - E)		 Sginal (green), Error signal (red), Communication (yellow), Forward (Green), Backward (green)
Power supply, consumption 24 VDC
max. 25 W
Temperature range 0 °C ... 50 °C
Protection class IP 65
EMC Industrial standard in compliance with CE
Weight, Housing dimensions VLM502 - O: approx. 1,7 kg, 135 mm x 140 mm x 67 mm (without connections)
VLM502 - E: approx. 2,2 kg, 140 mm x 140 mm x 91 mm (without connections)
Programming interface 
(max. 2)		 for parameter setting, data output and firmware update:
USB (IUSB), RS-232 (I232), RS-422/RS-485 (I4UN), isolated
Opto-isolated outputs3) 2x (Error, Signal status)
Opto-isolated inputs4) 3x (External trigger signal, Idle mode / Lock5), 
Definition of the direction of the movement
Pulse output (Encoder) A/B, 2 phases 90°, Resolution 8 ns, 0.2 Hz ... 25 kHz
Optionally as Open Collector (IPPL), 5V TTL (IP5V)6) 
or Push Pull (IPPP) 6)
Analog output Current output, adjustable as 0 ... 20 mA, 0 ... 24mA, 4 ... 20 mA (IAUN)
Fieldbus interface Profibus DP (IFBP), Telnet via FastEthernet (IFFE), Profinet IO (IFPN)
Standard scope of delivery VLM500, Programming interface on customer request, Power supply cable, Connection cable, connection cable between gauge head and evaluation unitpositioning aid, USB memory stick with documentation and software, printed manual

 

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