Siemens SINAMICS S120 Equipment Manual page 105

Braking resistor connection X1
Table 5-1 Terminal block X1
Terminal
1
2
Max. connectable cross-section: 4 mm
Type: Screw terminal 4 (see Connection methods)
Digital inputs/outputs X21
Table 5-2 Terminal block X21
Terminal
1
2
3
4
5
6
Max. connectable cross-section 1.5 mm2
Type: Screw terminal 1 (see Connection methods)
1) DI: Digital input; DO: Digital output; M: Electronic ground
Note
Applying a high signal to terminal X21.1 inhibits the braking module. On a falling edge,
pending error signals are acknowledged.
The prewarning for I*t monitoring is output as a high level on reaching 80% of the maximum
braking resistor ON time.
Only braking resistors approved by Siemens for this component are identified automatically.
Booksize Power Sections
Equipment Manual, (GH2), 04.2004 Edition, 6SL3097-2AC00-0BP0
Designation
Braking resistor connection R1
Braking resistor connection R2
2
Name
1)
DI inhibit braking module /
acknowledge error
DI DC link fast discharge
DO, "0 V" = prewarning
I*t shutdown
DO, "0 V" = fault/braking
module inhibited
Ground
DC Link Components Booksize
Technical specifications
Continued-short-circuit-proof
Technical specifications
Voltage: -3 V to 30 V
Typical current consumption: 10 mA at 24 V DC
Level (incl. ripple)
High level: 15 V to 30 V
Low level: -3 V to 5 V
Max. load current per output: Max. 100 mA
Continued-short-circuit-proof
Voltage: 24 V DC
5.1 Braking module booksize
5-5