X21 Ep Terminals - Siemens SINAMICS S120 Equipment Manual

Basic Line Modules with cold plate
6.3 Interface description
6.3.7

X21 EP terminals

Table 6-8 Terminal block X21
Terminal
1
2
3
4
Max. connectable cross-section: 1.5 mm
Type: Screw terminal 1 (see Connection Methods)
only applies to 20 kW and 40 kW Basic Line Modules
1
For operation, 24 V DC must be connected to terminal 3 and ground to terminal 4. When
removed, the bypass relay drops out. If the Line Module is not disconnected from the line
supply when the EP terminal is deactivated (e.g. a main contactor is not installed), the DC
link remains charged.
If the temperature switch is not connected, this can cause the resistor to overheat.
NOTICE
If a 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 beforehand. This can be carried
out using a leading breaking auxiliary contact (≥ 10 ms), for example.
This protects external loads located parallel to the drive on the same switching component.
138
Designation
+ Temp
- Temp
EP +24 V (enable pulses)
EP M (Enable Pulses)
2
WARNING
DANGER
Technical specifications
Temperature switch type: Bimetallic-element switch
with NC contact
Response threshold of the temperature input:
Temperature at the braking resistor in the operating
range → Resistance value ≤ 100 ohm
Overtemperature at the braking resistor → Resistance
value > 100 ohm
Fault reactions: Output of an error warning and
deactivation of the Basic Line Module after one minute,
if overtemperature is still present at the braking
resistor.
It is impermissible to apply a voltage at this input.
Voltage 24 V DC
Current consumption: 10 mA
Isolated input
Signal propagation times:
L → H 100 μs
H → L: 1000 μs
Manual, (GH4), 03.2007, 6SL3097-2AJ00-0BP4
1)
Booksize cold-plate power units