Analog Inputs - Siemens SINAMICS G120 Operating Instructions Manual

Adapt terminal strip

5.4 Analog inputs

5.4 Analog inputs
Analog input terminals
1
Define the analog input type
The inverter offers a series of default settings, which you can select using parameter p0756:
AI 0
AI 1
In addition, you must set the switch belonging to the analog input.
You can find the switch on the Control Unit behind the lower front
doors.
• Voltage input: Switch position U (factory setting)
• Current input: Switch position I
If you change the analog input type using p0756, then the inverter automatically selects the
appropriate scaling of the analog input. The linear scaling characteristic is defined using two
points (p0757, p0758) and (p0759, p0760). Parameters p0757 ... p0760 are assigned to an
analog input via their index, e.g. parameters p0757[0] ... p0760[0] belong to analog input 0.
94
p0756[0]
p0756[1]
Not available with CU240B-2 and CU240B-2 DP Control Units
Unipolar voltage input
Unipolar voltage input monitored
Unipolar current input
Unipolar current input monitored
Bipolar voltage input
No sensor connected
Unipolar voltage input
Unipolar voltage input monitored
Unipolar current input
Unipolar current input monitored
Bipolar voltage input
No sensor connected
Changing the function of the analog input
1. Define the analog input type using
CI: pyyyy
r0755[0]
2. Interconnect parameter p0755 with a
CI: pyyyy
r0755[1]
Operating Instructions, 01/2011, FW 4.4, A5E02299792B AB
parameter p0756 and the switch on the
inverter (e.g. voltage input -10 V ... 10 V or
current input 4 mA ... 20 mA).
connector input of your choice (e.g. as
speed setpoint).
In the parameter list of the List Manual,
connector inputs are marked with "CI".
0 V ... +10 V
+2 V ... +10 V
0 mA ... +20 mA
+4 mA ... +20 mA
-10 V ... +10 V
0 V ... +10 V
+2 V ... +10 V
0 mA ... +20 mA
+4 mA ... +20 mA
-10 V ... +10 V
Inverter with CU240B-2 and CU240E-2 Control Units
p0756[0] = 0
1
2
3
4
8
p0756[1] = 0
1
2
3
4
8