Leuze electronic ODSL 30 Series - Page 20

Description ODSL 30
18 ODSL 30 Leuze electronic
Behaviour of the analogue outputs of the ODSL 30/V…
The ODSL 30/V… has an analogue output with linear behaviour. A current output
(4 … 20mA) and a voltage output (1 … 10V) are available to the user. In order to achieve
the highest resolution possible, the range of the analog output should be set as small as the
application allows. The analogue output can be adjusted within the measurement range by
configuration via the keypad and LC display (adaptation of the characteristic output curve).
The parameter
Cal. Ana. Output determines whether the calibration is to be carried
out for the current or voltage output. The characteristic output curve can be configured with
a positive or negative gradient. For this purpose, the two distance values
Pos for min. val and Pos for max. val for the minimum and maximum
analogue output value are set accordingly in the range between 200mm and 30,000mm
(see figure 3.5 and figure 3.6).
Teach-in of the characteristic output curve
In addition to the edge-controlled teach-in (slope control) of the switching outputs, teach-
in of the characteristic output curve is also possible via a teach line for devices with software
version V01.10 and newer (see chapter 3.6.5). The following steps are required for the line
teach-in of the analogue characteristic curve:
1. Activation of the analogue line teach function via the keypad and menu.
Activate Input Menu -> Teach Mode -> Teach Mode time control.
2. Position measurement object at the desired measurement distance.
3. The respective teach function is activated by applying the active level (default +U
B
) to
the teach input "Teach Q1" (pin 5). The teach event is indicated by the flashing of the
LEDs and on the display.
Object distance
Current output
1)
1) The typical values only apply if the current output is calibrated.
Voltage output
2)
2) The typical values only apply if the voltage output is calibrated.
with positive
gradient
with negative
gradient
with positive
gradient
with negative
gradient
no object or object too close or too far
away (no signal)
>20.5mA
(typ. 21mA)
<3.5mA
(typ. 3mA)
>10.25V
(typ. 10.5V)
<0.75V
(typ. 0.5V)
= distance for minimum analogue value 4mA 20mA 1V 10V
= distance for maximum analogue value 20mA 4mA 10V 1V
< distance for minimum analogue value 4mA 20mA 1V 10V
> distance for maximum analogue value 20mA 4mA 10V 1V
Teach function Duration of teach
signal
Green LED Yellow
LED
Upper switching point
switching output Q1
2 … 4s flash synchronously
Distance value for
analogue output 1V / 4mA
4…6s
continuous
light
flashing
Distance value for
analogue output 10V / 20mA
6 … 8s flashing
continuous
light