Product Description; Function - Pepperl+Fuchs SIL VIM8 Series Manual

Functional Safety Vibration Sensor VIM8*

Product Description

2 Product Description
2.1

Function

The following vibration sensor versions are described in this manual:
Device version
VIM8***-**B**-***-*******
VIM8***-**C**-***-*******
VIM8***-**G**-***-*******
VIM8***-**V**-***-*******
Table 2.1 Device versions
General
The vibration sensor is used to measure and monitor absolute bearing vibrations in machines
in line with DIN ISO 10816. The effective vibration acceleration value is used
as the measurement parameter.
The vibration sensor determines the vibration variable using rms (root meas square)
averaging. This form of quadratic averaging or pre-filtering enables precise trend statements
about the condition of the application.
The device has 2 switching thresholds LIM1 and LIM2 and the corresponding delay times,
which can be adjusted separately.
The device also has an analog current output. This current output supplies a direct current
of 4 mA to 20 mA proportional to the vibration variable.
Some device versions have an analog current output for the output
of the bearing status parameter, see table above. This output is not safety relevant.
8
Vibration variable
Vibration acceleration
Vibration speed
Vibration acceleration
Vibration speed
Bearing status Pre-alarm and
parameter main alarm
X
X
–
–
Window
function
– X
X –
– X
X –