Siemens SINAMICS G130 - Page 108

Electrical installation
4.10 Signal connections
Inverter chassis units
108 Operating Instructions, 07/2016, A5E00331449A
X521: 2 analog inputs (differential inputs)
Table 4- 38 Terminal block X521
Terminal
Designation
1)
Technical data
1
AI 0+
The analog inputs can be toggled between current
and voltage input using switches S5.0 and S5.1.
As voltage input
:
-10 ... +10 V; R
i
> 100 kΩ
Resolution: 11 bits + sign
As current input
:
-20 ... +20 mA; R
i
= 250 kΩ
Resolution: 10 bits + sign
2 AI 0-
3
AI 1+
4 AI 1-
5
P10
Auxiliary voltage
:
P10 = 10 V
N10 = -10 V
Continuously short-circuit proof
6
M
7
N10
8
M
Max. connectable cross-section: 1.5 mm²
1)
AI: analog input; P10/N10: auxiliary voltage, M: Ground reference
NOTICE
Damage or malfunctions through impermissible voltage values
If a current exceeding ±35 mA flows through the analog current input, then the component
could be destroyed.
The common mode range must not be violated in order to avoid incorrect analog-digital
conversion results.
• The input voltage may only be in the range between -30 V and +30 V (destruction limit).
• The common mode voltage may only be in the range between -10 V and +10 V (error
limit).
• The back EMF at the auxiliary voltage connections may only be in the range between -
15 V and +15 V.
Note
The power supply for the analog inputs
can be taken internally or from an external power
supply unit.