Siemens SINAMICS S120 Equipment Manual page 38

Control Units
2.2 Control Unit 320 (CU320)
Electronics power supply X124
Table 2-5 Terminal block X124
Terminal
+
+
M (GND)
M (GND)
Max. connectable cross-section: 2.5 mm
Type: Screw terminal 2 (see Appendix A)
Note
The two "+" and "M" terminals are jumpered in the connector and not in the unit. This
ensures the supply voltage is looped through.
The total current consumption is the sum of the no-load current consumption plus the
DRIVE-CLIQ, digital output and PROFIBUS teleservice current requirements.
PROFIBUS X126
The PROFIBUS interface is a standard interface on every control unit.
Table 2-6 PROFIBUS interface X126
Pin
1
2
3
4
5
6
7
8
9
Type: 9-pin SUB-D female
Note
A teleservice adapter can be connected to the PROFIBUS interface (X126) for remote
diagnosis purposes.
The power supply for the teleservice terminals 2 and 7 withstands a max. load and continued
short-circuit current of 150mA.
2-10
Function
Electronics power supply
NC
Electronic ground
Electronic ground
2
Signal name Meaning
SHIELD Ground connection
M24_SERV Power supply for teleservice, ground
RxD/TxD–P Receive/transmit data P (B/B')
CNTR–P Control signal
DGND PROFIBUS data reference potential (C/C')
VP Supply voltage plus
P24_SERV Power supply for teleservice, + (24 V)
RxD/TxD–N Receive/transmit data N (A/A')
- Do not use
Technical specifications
Voltage: 24 V DC (20.4 V - 28.8 V)
Current consumption: Max. 0.8 A (without DRIVE-CLiQ
or digital outputs)
Max. current via jumper in connector:
20 A at 55 °C
Equipment Manual for Control Units and Additional System Components
Equipment Manual, (GH1), 04.2004 Edition, 6SL3097-2AH00-0BP0
Range
0 V
RS485
TTL
5 V +-10 %
24 V (20.4 V –
28.8 V)
RS485