Siemens SINAMICS G150, Руководство по эксплуатации

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Electrical installation
4.9 Signal connections
Converter cabinet units
114
Operating Instructions, 07/2016, A5E03347396A
X521: 2 analog inputs (differential inputs)
Table 4- 20 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.