REOVIB MFS 268 UL/CSA
Operating Instructions
14
ELEKTRONIK
10.2.6.1 Instructions for using regulation mode
•
An accelerometer e.g. SW 70 must be fitted to the vibratory feeder in order to run in regulation mode.
The accelerometer should have a frequency range corresponding to that of the feeder.
•
All vibration signals, that are picked up by the accelerometer, are used by the regulator circuit. Stray
signals generated by neighbouring machinery, a flimsy accelerometer mounting, or an unstable sup-
port frame, can cause incorrect regulation to occur. It is especially important to ensure that there are
no external influences, of this type, during the automatic frequency search routine.
•
Resonant frequencies: It is possible to have several vibrating frequencies, where resonance occurs,
depending on the springing and masses of the system. The additional resonant points are at multi-
ples of the dominant resonant frequency. Under extreme circumstances the automatic frequency
search may be unable to differentiate between these frequencies and so in theses instances the fre-
quency must be set manually.
10.2.6.2 Mounting the accelerometer
The accelerometer should generate signals for the movement and acceleration of the feeder, which are
fed back to the regulator circuit of the control unit. Therefore it is very important that no other extraneous
vibration signals are picked up by the sensor
The sensor should be positioned, that it moves
in the same direction as the feeder, ideally in
the same plane as the springs. It should be
fitted on a solid block that will not generate
vibration signals.
The sensor cable need to be fixed with a cable clamp to avoid damage of the cable.
SW
SW
SW
100
1
0
0
cable clamp
