Siemens SINAMICS G150 - Page 171

Electrical installation
4.10 Other connections
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A
171
Note
Open input
An open input is interpreted as "low".
The power supply and the digital inputs/outputs are isolated from t
he Control Unit.
Note
Transient voltage interruptions
If the 24 V supply is briefly interrupted, then the digital outputs are deactivated during this
time.
X482 Analog inputs/outputs
Table 4- 58 Terminal block X482
Terminal
Designation
1)
Technical data
1
AI 0+
Analog inputs (AI)
Voltage
: -10 … +10 V; R
i
: 65 kΩ
Common mode range
: ±30 V
Resolution
: 13 bits + sign
2
AI 0-
3
AI 1+
4
AI 1-
5
AO 0+
Analog outputs (AO)
Voltage range
: -10 … +10 V
Load current
: max. -3 … +3 mA
Resolution
: 11 bit + signed
Continuous short-circuit proof
6
AO 0-
7
AO 1+
8 AO 1-
Max. connectable cross-section: 0.5 mm²
1)
AI: analog input, AO: Analog output
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
Open input
An open input is interpreted as approximately "0 V".
The power supply of the analog inputs/outputs is drawn via the option slot of the Control Unit
and not via X424.
The shiel
d is connected to the Control Unit.