Siemens SINAMICS S120 Equipment Manual page 210

Cabinet Modules
5.7 Central Braking Modules
-X2, control terminals
Terminal
1
2
3
4
5
6
max. connectable cross section 2.5 mm
NO: normally-open contact, NC: normally-closed contact, COM: Mid-position contact
1)
-X5, braking resistor connection
Terminal
1
2
-S1, reset key
Function
Reset key
The key performs the same function as control terminal -X2:1/2.
-S2, threshold switch
Item
1
2
The response threshold at which the Braking Module is activated and the resulting activated
DC link voltage for braking mode are specified in the following table.
The threshold switch must only be switched over when the cabinet unit is disconnected
from the power supply and the DC link capacitors are discharged.
210
Function Meaning
DI 24V 0 = Normal operation
ground 1 = Disable, reset
Ground Ground
DO.COM Mid-position contact
1)
DO.NO 0 = Fault
1)
1 = Ready
DO.NC 0 = Ready
1)
1 = Fault
2
Function
Braking resistor connection
Braking resistor connection
Meaning
0 = Normal operation
1 = Disable, reset
Function
Upper switching threshold (factory setting)
Lower switching threshold
WARNING
Technical specifications
24 V AC/V DC, input load approximately 10 mA
(connection not required)
Centralized fault indication for:
No DC link voltage, overtemperature, overload, short
circuit/ground fault.
Switching capacity: 250 V, 2 A,
250 VA AC voltage
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A