Interfaces On The Braking Resistor; Configuring The "Overtemperature" Checkback - Siemens SINAMICS S120 Equipment Manual

5.7.6.4

Interfaces on the braking resistor

Power connections on the braking resistor
Table 5- 60
Terminal
1
2
PE
max. connectable cross section: 2 x 240 mm
Cables are always entered from below; a cable propping fixture must be provided by the
customer.
-X10: Thermostatic switch checkback contact
Table 5- 61
Terminal
1
2
max. connectable cross section: 1.5 mm
5.7.6.5

Configuring the "Overtemperature" checkback

The checkback contact of the braking resistor thermostatic switch must be wired to a digital
input so that the drive is shut down in the event of a malfunction.
● Assumption 1:
● Assumption 2:
● Setting required:
Control engineering measures must also be implemented to prevent the drive from starting
up again before the braking resistor has had a chance to cool down properly.
S120 Cabinet Modules Equipment Manual
Manual, (GH5), 10/2008, A5E00427098A
Power connections on the braking resistor
Function
Connection to the Central Braking Module: -X5
Connection to the Central Braking Module: -X5
PE connection
Terminal -X10: Thermostatic switch checkback contact
Function
Thermostatic switch checkback contact
Normally-closed contact, 250 V AC, max. 1 A
Thermostatic switch checkback contact is wired to digital input 3 (DI3) of
CU320 (-X55-X4:4)
Once the thermostatic switch trips, "External Fault 3" (F7862) is triggered and the drive is
shut down with OFF2.
(Drive) p2108 = (CU320) 0722.3
2
2
Cabinet Modules
5.7 Central Braking Modules
217