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REOVIB MFS 268 UL/CSA
Operating Instructions
15
ELEKTRONIK
In regulation mode the magnitude of the output signal has a direct affect on the maximum ampli-
tude of the feeder.
On bowl feeders it is advisable to fit the sensor as near as possible to the outside diameter and in this
position it will be subjected to the greatest movement
The control range of the set point will be considerably reduced
when the sensor signal is weak.
s = deflection
Mounting position 1 = small deflection
Mounting position 2 = large deflection
Bowl feeder example
1. small amplitude because
sensor is mounted vertically.
2. larger amplitude because sen-
sor is mounted in the same plane
as the springs.
Linear feeder example
The controller, together with the sensor fitted on the feeder, produce a feed back loop, whereby the signal
generated from the sensor determines the control range of the set point i.e. the regulator controls the
feeder so that the effective value (feeder power or intensity of vibration) relates to the provided set point
value. Because the effective value is dependent on the feeder (frequency, acceleration and amplitude)
and in addition depends on the mounting position of the sensor, the regulator must be adapted to suit the
output control range.
This is achieved by using the parameter P in Menu C 008. The measured sensor signal range is adjusted
by changing this value. In most instances a value of less than 100 must be entered, so that the set point
can reach 100% or can go as high as possible.
When it is not possible to achieve an acceptable range the accelerometer should be mounted in the loca-
tion which gives the greatest movement (see the bowl feeder example).
The importance of scaling this value is demonstrated when, for example, a feeder takes a very long time
to ramp up, after it has been switched on.
1
2
2
1
s
Sensor
Swing Direction
Mounting Block
Moving Part
Fixed Part
1
2