MMF VS11 User manual

Instruction Manual
Manfred Weber
Metra Mess- und Frequenztechnik in Radebeul e.K.
Meissner Str. 58 - D- 1445 Radebeul
Tel. [phone] Fax [phone]
Email: [e-mail] Internet: www.MMF.de
Vibration Switch/
Sensor
VS11
VS12

Editor:
Manfred Weber
Metra Mess- und Frequenztechnik in Radebeul e.K.
Meißner Str. 58
D-0 445 Radebeul
Tel. [phone]
Fax [phone]
Email [e-mail]
Internet www.MMF.de
Note: The latest version of this manual can be found as a PDF at
http://www.mmf.de/produktliteratur.htm
Specifications subject to change.
© 20 6 Manfred Weber Metra Mess- und Frequenztechnik in Radebeul e.K.
Full or partial reproduction subject to prior written approval.
Nov/ 22 # 94

Inhaltsverzeichnis
.Application.............................................................................................................4
2.The Devices at a Glance.........................................................................................4
3.Connectors..............................................................................................................5
3. .Power Supply..................................................................................................5
3.2.Relay Output...................................................................................................5
3.3.USB Interface..................................................................................................6
4.Parametrization.......................................................................................................6
4. .Device Identification.......................................................................................6
4.2.Settings............................................................................................................7
4.2. .General.....................................................................................................7
4.2.2.Monitoring Mode.....................................................................................7
4.2.3.Gain.........................................................................................................7
4.2.4.Filters and Integrators..............................................................................8
4.2.5.Warning and Alarm Limits.......................................................................8
4.2.6.Switching Output.....................................................................................8
4.2.7.Factory Settings / Calibration...................................................................9
4.3.LED Status Indicators.....................................................................................9
5.Measuring in the Time Domain..............................................................................9
6.Measuring in the Frequency Range (FFT)............................................................
7.Teach-in Function................................................................................................. 2
8.Measuring Points on Rotating Machines.............................................................. 3
8. .General.......................................................................................................... 3
8.2.Attachment.................................................................................................... 3
8.3.Attachment Recommendations to ISO 08 6- ............................................ 3
9.Vibration Monitoring with Standard Limits.......................................................... 4
0.Installing the PC Software.................................................................................. 7
.Integration of VS / 2 with other Software....................................................... 8
2.Firmware Update................................................................................................ 8
3.Technical Data....................................................................................................20
Appendix: Warranty
CE Declaration of Conformity

Thank you for purchasing a Metra product!
1. Application
The VS / 2 vibration switches are designed to monitor vibration amplitudes on ro-
tating machines (see. Chapter 9). When a given amplitude is exceeded an alarm sig-
nal or automatic shutdown is triggered via the relay output. Similarly, the devices
can be used as impact detectors, for example, to report collisions.
The VS and VS 2 devices measure and monitor vibration in both the time and
frequency domain, for this reason they can selectively monitor individual frequency
band components.
The devices possess a piezoelectric precision accelerometer and micro-controller-
based electronics. This ensures high reliability and reproducibility. The devices are
configured via a USB interface and free software. Due to its wide range of settings
VS / 2 can be adjusted to every application, from the measurement of low vibra -
tions to the detection of high-frequency shock accelerations.
2. The Devices at a Glance
VS :
VS 2:
4

3. Connectors
3.1. Power S pply
The VS vibration switch operates with DC voltage in monitoring mode, the termi-
nals "+ U" (positive) and "0V" (negative/ground) must be connected inside the cas-
ing. The supply voltage range is 5 to 30 V. Power consumption is less than 00 mA.
During parameter setting the VS obtains its power via the USB cable.
The VS 2 is powered by connecting a USB cable to the 8-pin socket. Alternatively,
a DC voltage of 5 to 2 V can be connected at the terminals 4 (positive pole) and 7
(minus/ground) of the 8-pin socket (Figure 2).
The supply voltage connection is protected against false polarity.
3.2. Relay O tp t
The devices contain a PhotoMOS relay. The relay switching behavior can be pro -
grammed with the VS x software (see. Chapter 4.2.6.). The relay terminals are gal-
vanically isolated from the rest of the circuit.
The VS relay output is connected via screw terminals inside the housing (Figure
).
VS 2 has relay terminals located at contacts and 2 of the 8-pin socket (Figure 2).
Metra offers connection cables for VS 2 with an 8-pin connector for power supply
and relay output.
Please note that the relay is only suitable for switching small loads (see. Chapter
Technical Data). No overload protection is provided.
5
Figure 2: Outside view of the VS 2 socket with terminal numbers
Figure : Open VS with terminals for power supply / relay output and USB socket