Selecting The Valve Supply - Aventics PROFIBUS DP Mode D'emploi

Tab. 8: Set the necessary diagnostic messages using the S3 mode switch
Bit Diagnosis
1 OFF: Valve driver overload switched off
ON: Valve driver overload switched on
2 OFF: 12.5 V < U
ON: 12.5 V < U
3 OFF: 12.5 V < U
ON: 12.5 V < U
4 OFF: Message U
ON: Message U
5 OFF: Message U
ON: Message U
6 NC
7 OFF: Threshold for U
ON: Threshold for U
8 OFF: Threshold for U
ON: Threshold for U
S4.4
S4.1
* Switch position
AVENTICS | PROFIBUS DP | R412009414-BDL-001-AE
< 21.6 V/20.4 V switched off
Q1
< 21.6 V/20.4 V switched on
Q1
< 21.6 V/20.4 V switched off
Q2
< 21.6 V/20.4 V switched on
Q2
< 12.5 V switched off
Q1
< 12.5 V switched on
Q1
< 12.5 V switched off
Q2
< 12.5 V switched on
Q2
is 20.4 V
Q1
is 21.6 V
Q1
is 20.4 V
Q2
is 21.6 V
Q2
7.1.4

Selecting the valve supply

The valve power supply can be selected block-wise with the S4
sliding switch (under fitting B). It is possible to switch between
the PROFIBUS line and the U
external supply.
When delivered, all switches are set to position 1.
Commissioning/Operation
Note
This diagnostic message is displayed if a
valve reports an overload or short circuit.
The diagnostic message is only displayed as
long as this valve is actuated.
In order to ensure safe valve switching, the
switch voltage must be 20.4 V or 21.6 V! If
the UQ voltage is between 12.5 V and 20.4 V/
21.6 V, the voltage is too low. The low voltage
message appears approx. 10 ms after being
turned on and approx. 20 ms after being
turned off. If the voltage is smaller than
12.5 V, this is reported separately.
The threshold 20.4 V/21.6 V can be adjusted
for different valve series.
und U voltages from the
Q1 Q2
71