X21 Digital Inputs/Outputs - Siemens SINAMICS S120 Equipment Manual

DC link components Booksize
5.1 Braking Module Booksize
5.1.3.4

X21 digital inputs/outputs

Table 5-2 Terminal block X21
Terminal
1
2
3
4
5
6
Max. connectable cross-section 1.5 mm
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 pre-warning 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.
5-6
Name
1)
DI low: enable Braking Module
DI high: inhibit/acknowledge
Edge change high -> low: fault
acknowledgement
DI low: braking resistor not activated
manually
DI high: braking resistor activated manually
(fast discharge)
Safety functions remain active, I*t protection
remains active
If X21.1 and 2 are activated simultaneously,
the Braking Module inhibit has priority.
DO high: no pre-warning for I*t shutdown
DO low: pre-warning for I*t shutdown (80%
of max. ON time reached)
DO high: ready for operation, no fault
DO low: Fault (1→0)
Ground
2
Technical data
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: 100 mA
Continued-short-circuit-proof
Voltage: 24 V DC
Equipment Manual for Booksize Power Units
Equipment Manual, (GH2), 03/2006 Edition, 6SL3097-2AC00-0BP3