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Specifications are subject to change without notice. Pictures are just an example. For special features and/or customization, please ask to our sales network. 07/18
CERTUS Installation Manual
Stand Still and Speed Control
The
StandStill and Speed Control
function block
monitors the speed of a device, generating the Zero
to 1 (TRUE) output when the speed is lower than a
selected value. In addition, it generates the Over =
0 (FALSE) output if the measured speed exceeds a
predetermined threshold.
Parameters
Axis type:
It defines the type of axis controlled by
the device. It will be Linear in the case of a translation
and will be Rotary in the case of motion around an
axis.
Sensor Type:
In the event that the previous parameter
is Linear, the Sensor Type defines the type of sensor
connected to the module inputs. It can be Rotary
(e.g. shaft encoder) or Linear (e.g. optical array). This
choice allows to define the following parameters.
Measuring device:
It defines the type of sensor(s)
used. The possible choices are:
• Encoder
• Proximity
• Proximity
• Pro Proximity2
• E Encoder2
Enable direction:
Enabling this parameter, the
DIR output is enabled on the function block. This
output will be 1 (TRUE) when the axis rotates
Counterclockwise and will be 0 (FALSE) when the
axis rotates Clockwise.
Direction decision:
It defines the direction of rotation
for which the set thresholds are made active. The
possible choices are:
• Bidirectional
• Clockwise
• Counterclockwise
If Bidirectional is selected, the excess of the set
threshold is detected whether the axis rotates
clockwise or counterclockwise. Selecting Clockwise
or Counterclockwise, this is detected only when the
axis rotates in the selected direction.
Example of Clockwise axis rotation
In1
Threshold no.
0
Speed 1
1
Speed 2
In1
In2
Threshold no.
0
0
Speed 1
0
1
Speed 2
1
0
Speed 3
1
1
Speed 4