Baumer OM20 User Manual

Baumer Functions | 8
OM20/ OM30 RS485 with Modbus RTU | V1 Operating Manual 37
8.9 Hysteresis
The Hysteresis prevents unwanted switching of the switching output. The parameterized value
of the hysteresis is the difference in distance between the points at which the switching output is
activated and deactivated. Baumer recommends always setting the hysteresis not equal to 0.
Positive hysteresis
SP1 SP2SP1
Point mode Window mode
1
0 0
1
Ill.15: Positive hysteresis
n
Switching output in point mode: A positive hysteresis value corresponds to a right aligned
hysteresis.
n
Switching output in window mode: A positive hysteresis value corresponds to a hysteresis
aligned outside of the window.
n
Example:
▪ Measuring mode of the switching output: point mode
▪ Switching point (SP1): 200mm
▪ Hysteresis: 1.5mm
▪ This results in a right aligned hysteresis. If the measured distance is less than 200mm,
the switching output is active. If the object to be measured moves from 200mm to
201mm, the switching output remains active due to the hysteresis. As soon as the mea-
sured distance is greater than 201.5mm, the switching output is deactivated (switching
output switches to low). If the object to be measured moves from 202mm to 201mm, the
switching output remains deactivated. The switching output only changes its state at
200mm (parameterized switching point).
Negative hysteresis
SP1 SP2SP1
Point mode Window mode
0
1
0
1
Ill.16: Negative hysteresis
n
Switching output in point mode: A negative hysteresis value corresponds to a left aligned
hysteresis.
n
Switching output in window mode: A negative hysteresis value corresponds to a hysteresis
aligned within the window.
n
Example:
▪ Measuring mode of the switching output: window mode
▪ Switching point 1 (SP1): 200mm
▪ Switching point 2 (SP2): 300mm
▪ Hysteresis: -1.5mm

Baumer OM20 Specifications

General

Brand	Baumer
Model	OM20
Category	Measuring Instruments
Language	English