X1 Braking Resistor Connection; X21 Digital Inputs/Outputs - Siemens SINAMICS S120 System Manual

7.1.3.2

X1 braking resistor connection

Table 7-1 X1 braking resistor connection
Terminal
1
2
Type: Screw terminal 4 (Page 177)
Table 7-2 Braking resistors without a thermostatic switch for Braking Modules
Braking resistor
6SN1113-1AA00-0DA0
6SL3100-1BE31-0AA0
For detailed technical information on the braking resistors, see the section entitled Braking
resistors (Page 121).
7.1.3.3

X21 digital inputs/outputs

Table 7-3 X21 digital inputs/outputs
Terminal
1
2
3
4
5
6
Type: Screw terminal 1 (Page 177)
DI: digital input; DO: digital output; M: Electronics ground
1)
The "fast discharge function" is used for discharging the capacitors in the DC link after the line supply has been interrupted.
2)
It may only be used a maximum of once or twice per week.
High Frequency Drive
System Manual, 10/2020, 6SL3097-5AH10-0BP0
Function
Braking resistor connection R1
Braking resistor connection R2
R in Ω
17
5.7
Function
1)
DI low: Enable Braking Module
DI high: Inhibit/acknowledgement
Edge change, high → low: fault acknowledgement
DI low: braking resistor, not controlled manually
DI high: Braking resistor controlled manually
(quick discharge)
2)
If X21.1 and X21.2 are activated simultaneously,
the Braking Module inhibit has priority.
DO high: no prewarning
DO low: Prewarning, disconnection imminent
DO high: ready for operation, no fault
DO low: Fault
Ground
7.1 Braking Module Booksize
Technical specifications
Continuously short-circuit proof
P in kW
rated
0.3
1.5
Technical specifications
Voltage: -3 ... +30 V
Typical current drain:
10 mA at 24 V DC
Level (incl. ripple)
High level: 15 ... 30 V
Low level: -3 ... +5 V
Max. load current per output: 100 mA
Continuously short-circuit proof
Voltage: 24 V DC
Braking Modules
P in kW
max
25
100
97