4.1
Assignment of the customer inputs of the Profibus DP interface (option)
X7 spare
This plug provides pins for 4 digital customer inputs.
These signals are freely available inputs, which the micro-controller trans-
mits into the process representation input (byte 8, bits 0 – 3). The inputs are
internally connected to 0 V via pull-down resistors. In an unconnected state,
a logical zero is transmitted. To set an input to logical one, + 24 V DC must
be applied (pins 5 or 6).
.
Proposed external wiring diagrams (appendix B of the
operation instructions) for these signals must be
observed.
.
The bounce time of the connected switches should not be
more than 1 ms.
X12
First
analogue customer input (analogue 2).
An external 0/4 – 20mA sensor for transmitting the measured values via the
Profibus can be connected to this input.
X11
Second
analogue customer input (analogue 3/4)
A 0/4 – 20mA sensor for transmitting the measured values via the Profibus
can be connected to this input.
If the switch S1.1 is on the left side in position AI 3, the pin 5 (AN 4) is
connected to GND. Input AN 3 can be used in the same way as AN 2.
If the switch is on the right side in position AI 3-AI 4, a differential measure-
ment between AN 3 and AN 4 can be performed.
.
Potential-free differential measurement is not possible.
.
There is always a GND connection.
.
Proposed external wiring diagrams (appendix B of opera-
tion instructions) observed.
.
The inputs AN2, AN3, and AN4 do not have galvanic isola-
tion via opto-isolator. The maximum load of the 24 V
through the sensors must not exceed 40 mA.
15
Actuator controls AUMA MATIC AM/ AMExB/ AMExC
Short instructions bus connection
Profibus DP
Pin
Description
1
R1: digital input 1
2
R2: digital input 2
3
R3: digital input 3
4
R4: digital input 4
5
+ 24 V
6
+ 24 V
Table 7: Digital inputs
Pin
Description
1
AN 2: analogue signal 0 – 20 mA
2
GND (system ground)
Table 8: Analogue inputs at plug X12 AI 2
Pin
Description
1
+ 24 V
2
GND (system ground)
3
GND (system ground)
4
AN 3+: analogue signal 0 – 20 mA (plus)
5
AN 4–: analogue signal 0 – 20 mA (minus)
6
GND (system ground)
Table 9: Analogue inputs at plug X11 AI 3/4
