Operating Manual WLVCM-BA-10
Page 17 of 37
EN
6.2.1.3 Interface W3 „Status“
The electrical interface W3 has three digital outlet clamps which are described below and which are
used to display the current status of the WLVCM (see also table 4). Each of the clamps at Pins 9, 10
and 11 indicates its status through the two signal levels LOW and HIGH. When signal level LOW is
shown, the measurable voltage at the clamp is 0 VDC. For signal level HIGH, the voltage is +24 VDC.
Pin
Clamp
Value
Specification
8
GND_2
0 VDC
Common reference potential for the WLVCM
9
Finished
0 VDC / 24 VDC
Confirms end of application cycle
10
Error
0 VDC / 24 VDC
Signals malfunction
11
Ready
0 VDC / 24 VDC
Signals ready for operation
Table 4 – Overview of the clamps at the electrical interface W3
The digital outlet clamp “Finished“ shows the status of the application process. If an application process
is started by a superordinate control unit (see also chapter 6.2.1.6), the “Finished” signal will change
from signal level HIGH to LOW. When the application cycle is finished, the signal level will change from
LOW to HIGH again (see also examples of signal curves in chapter 9).
When a malfunction occurs, the “Error” digital outlet clamp will indicate a HIGH signal level. The signal
level will remain even if the malfunction has been corrected and has to be confirmed by the “Reset”
signal (see also chapter 6.2.1.4).
The “Ready“ digital outlet clamp indicates that the WLVCM is ready for operation. A HIGH signal level
at this outlet clamp tells you that the required temperature at the connected temperature sensor (if
present) has been reached and that there is no malfunction on the WLVCM. The device is fully
operational and you can start an application process.
6.2.1.4 Interface W4 „Superordinate Control Unit“
The interface “superordinate control” comes with three digital inlets which are described below and
which allow you to control the WLVCM through a superordinate control unit. The individual digital inlets
will be active, if the superordinate control unit applies a HIGH signal level (+24 VDC). Applying a
potential of 0 VDC stands for a LOW signal level and will deactivate the function which is connected to
the respective digital inlet.
Pin
Clamp
Value
Specification
12
Reset
0 VDC / 24 VDC
Confirmation of malfunctions
13
MUX_1
0 VDC / 24 VDC
Parameter set selection Bit 1
14
MUX_2
0 VDC / 24 VDC
Parameter set selection Bit 2
15
GND_3
0 VDC
Common reference potential for the WLVCM
Table 5 – Overview of the clamps at the electrical interface W4
Use the “Reset” digital inlet clamp for confirming a malfunction (see also chapter 6.2.1.3) through a
signal change from LOW to HIGH.
You can save parameter configurations, so-called parameter sets, in the WLVCM; and these can be
activated through a superordinate control unit, using the two digital inlet clamps “MUX_1“ und “MUX_2“.
Hereby you will be able to perform different applications with different parameters with only one spray,
dosing or pulse valve. Please refer to chapter 8.4 for a detailed description of the various options.
Activating/selecting the four possible parameter sets is made according to Table 6.
MUX_2
MUX_1
Selected Parameter Set
LOW
LOW
Parameter set 0
LOW
HIGH
Parameter set 1
HIGH
LOW
Parameter set 2
HIGH
HIGH
Parameter set 3
Table 6 – Signals “MUX_1“ and “MUX_2“ for selecting / activating different parameter sets
Examples of signal curves when the WLVCM is operated through a superordinate control unit can be
found in chapter 9.
