Braking Module - Settings And Connections - Siemens Sinamics G120 Hardware Installation Manual
Power module
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Also See for Sinamics G120:
- List manual (1256 pages) ,
- Manual (732 pages) ,
- Operating instructions manual (550 pages)
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8.3.6.1
Braking Module - settings and connections
Threshold switch
Using the threshold switch, you set at which DC link voltage the braking resistor is switched
in. It is only permissible that you change the setting of the threshold switch in the voltage-
free state.
● "Lower" switch position (factory setting):
The chopper switches in the braking resistor at a DC link voltage of 774 V. With this
switch setting, you use 100 % of the braking power.
● "Upper" switch position
The chopper switches-in the braking resistor at a DC voltage of 673 V. This means that
you reduce the voltage stress on the motor as well as the inverter; however, the braking
power is reduced by 25 %
Terminal block -X21
Terminal block-X21 has a digital input and a digital output. Using the digital input you can
inhibit or release the Braking Module. The digital output indicates when the braking resistor
is active.
Terminal 1
Terminal 2:
Terminal 3
Terminal 4
Terminal 5
Terminal 6
Connections for DC link and braking resistor
● Braking resistor: R1 and R2
● DC link: DCPA and DCNA
Image 8-9
Power Modules PM240
Hardware Installation Manual, 07/2016, A5E36985441C AA
Shield
Shield potential for terminals 1 ... 6
0 V
Low signal: Braking Module enabled
High signal: Braking Module inhibited
Digital input
0 V
High signal: Braking resistor not active
Low signal: Braking resistor active
Digital output
+ 24 V DC
18 ... 30 V, typical current drain at 24 V: 10 mA
Connections and settings at the Braking Module
Spare parts and accessories
8.3 Optional accessories
Signal level:
Low: - 3 ... 5 V,
high: 15 ... 30 V
99
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