X21 Digital Inputs/Outputs - Siemens SINAMICS S120 Combi Equipment Manual

7.1.3.4

X21 digital inputs/outputs

Table 7- 2 Terminal strip X21
Terminal
1
2
3
4
5
6
Max. connectable cross-section 1.5 mm
Type: Screw terminal 1 (see Chapter "Control cabinet installation and EMC / connection system")
1) DI: digital input; DO: digital output; M: Electronics ground
2) The fast discharge function is used for discharging the capacitors in the DC link after interruption of the line supply and
may be used a maximum of 1-2 times per week.
Prior to performing maintenance task at the drive system, the following tasks must be
performed:
1. Disconnect the system.
2. Protect against reconnection.
3. Make sure that the equipment is de-energized.
4. Ground and short-circuit.
5. Cover or enclose adjacent components that are still live
These tasks must be performed in the above mentioned order prior to maintenance. After
maintenance proceed in the reverse order.
SINAMICS S120 Combi
Manual, Edition 05.2010, 6SL3097-4AV00-0BP0
Designation
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: Advance 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
DANGER
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
2)
Max. load current per output: 100 mA
Continued-short-circuit-proof
Voltage: 24 V DC
DC link components
7.1 Braking Module
149