2
0
1
8
-0
7
12
VBA-2A-KE5-IL/UL, VBA-4A-KE5-IJL/UJL
Product Description
Jumpers:
Automatic Detection
Parameter bits: P1=1; P3=1->0
Jumpers:
A test signal records the input resistance of a connected actuator.
■
If the measured input resistance value is > approx. 2 k
Ω
, the corresponding output is
configured as a voltage output.
■
If the measured input resistance value is < approx. 700
Ω
, the corresponding output is
configured as a current output.
The output configuration detected is stored in the non-volatile memory of the module.
Automatic detection takes approx. 1 second and is indicated by OUT LEDs flashing in quick
succession.
3.6
Resetting/Restarting Automatic Detection
Automatic detection can be restarted at any time during operation. Switching the supply off and
on is not necessary. There are two options available:
1. Remove the jumper from CON2 and reconnect the jumper to CON-
2. Set and reset (0 -> 1 -> 0) the parameter bit P3. To do this, parameter P1 must be set to 1.
There must be no jumpers installed on CON1 and CON2.
10
12
9
11
CON1
CON2
CON-
CON-
10
12
9
11
CON1
CON2
CON-
CON-
Note!
In the event that the AS-Interface system is restarted when configuring the switch parameters,
ensure that P3 is not changed from 1 to 0.
Tip
Test Signal
The test signal is issued if the CON2 jumper is closed or if P3 is set to 0.
The test signal is limited to 30 V or 20 mA for a maximum of 5 ms.
No test signal is issued if the module is restarted.
Note!
Never connect the CON1, CON2, and CON- connections with external potentials.
Maximum permissible length of the jumper:
≤
5 cm.
