Ep Terminals X21 - Siemens SINAMICS S120 Equipment Manual

5.3.5

EP terminals X21

Table 5-4 Terminal block X21
Terminal
1
2
2
4
Max. connectable cross-section: 1.5 mm
Type: Screw terminal 1 (see Appendix A)
Note
For operation, 24 V DC must be connected to terminal 3 and ground to terminal 4. When
removed, pulse inhibit is activated (if this has been parameterized).
If the Line Module is not disconnected from the network (e.g. with a main contactor), the
DC link remains charged.
Notice
Before the drive line-up is switched off by means of the line disconnecting device, the
voltage at terminals 3 (EP +24 V) and 4 (EP M) must be interrupted. This can be carried out
using a leading breaking auxiliary contact (≥ 10 ms), for example.
Equipment Manual Booksize Cold-Plate Power Sections
Manual, (GH4), Edition 06.2005, 6SL3097-2AJ00-0BP2
Designation
Reserved, do not use
Reserved, do not use
EP +24 V (enable pulses)
EP M (enable pulses)
2
Active line modules with cold plate
Technical specifications
Voltage 24 V DC
Current consumption: 10 mA
Isolated input
Signal propagation times:
L → H: 100 μs
H → L: 1000 μs
5.3 Interface description
5-7