X482 Analog Inputs/Outputs - Siemens SINAMICS S120 Manual

Note
Malfunction in the switched-off state due to diagnostic currents
Unlike mechanical switching contacts, e.g. emergency stop switches, diagnostic currents can
also flow when the semiconductor is in the switched-off state (logical state "0" or "OFF"). If
interconnection with digital inputs is faulty, the diagnostic currents can result in incorrect
switching states. Incorrect signal states of digital inputs can cause unwanted motions of
machine parts and trigger malfunctions.
• Observe the conditions of digital inputs and digital outputs specified in the relevant
manufacturer documentation.
• Check the conditions of the digital inputs and digital outputs with regard to currents in the
"OFF" state and if necessary connect the digital inputs to suitably dimensioned, external
resistors to protect against the reference potential of the digital inputs.
5.5.2.4

X482 analog inputs/outputs

Table 5-15
Type: Spring-loaded terminal 1 (Page 320)
AI: analog input, AO: analog output
1)
Note
Permissible voltage values
In order to avoid incorrect results of the analog-digital conversion, the analog differential voltage
signals can have a maximum offset voltage of ±30 V with respect to ground potential.
Note
An open input is interpreted as approximately "0 V".
The power supply of the analog inputs/outputs is taken from the option slot of the Control Unit
and not from X424.
The shield is placed on the Control Unit (see Chapter "Shield support (Page 112)").
Control Units and additional system components
Equipment Manual, 06/2020, 6SL3097-5AH00-0BP2
X482: Analog inputs/outputs
Terminal Designation
1 AI 0+
2 AI 0-
3 AI 1+
4 AI 1-
5 AO 0+
6 AO 0-
7 AO 1+
8 AO 1-
5.5 Terminal Board TB30
Technical data
1)
Analog inputs (AI)
Voltage: -10 ... +10 V; R
Common mode range: ±30 V
Resolution: 13 bits + sign
Analog outputs (AO)
Voltage range: -10 ... +10 V
Load current: max. -3 ... +3 mA
Resolution: 11 bit + signed
Continuous short-circuit proof
Option boards
: 65 kΩ
i
109