Siemens SINAMICS G110M - Dynamic Braking

Functions
8.9 Application-specific functions
SINAMICS G110M Operating Instructions
220 Operating Instructions, 04/2015, FW V4.7.3, A5E31298649B AD
Parameter
Description
p1234
DC braking start speed (factory setting 210000 rpm)
r1239
DC braking status word
.08
.10
.11
.12
.13
DC braking active
DC braking ready
DC braking selected
DC braking selection internally locked
DC braking for OFF1/OFF3
Table 8- 19 Configuring DC braking as a response to faults
Parameter
Description
p2100
Set fault number for fault response
(factory setting 0)
Enter the fault number for which DC braking should be activated, e.g. p2100[3] = 7860
(external fault 1).
p2101 = 6
Fault response setting
(factory setting 0)
Assigning the fault response: p2101[3] = 6.
The fault is assigned an index of p2100. Assign the same index of p2100 or p2101 to the fault and
fault response.
The inverter's List Manual lists in the "Faults and alarms" list the possible fault responses for every
fault. The "DCBRAKE" entry means that it is permissible to set DC braking as response for this par-
ticular fault.
DC braking voltages
The line supply voltage available to the Inverter determines the amount of rectified brake
voltage available for DC braking function. Listed in the following table are examples of the
correlation between the input AC voltage to the available DC voltage for the DC braking
function.
Line voltage
380 V AC
400 V AC
440 V AC
480 V AC
500 V AC
Rectified brake
voltage
171 V DC 180 V DC 198 V DC 216 V DC 225 V DC
The following formula can be use a guide to the rectified brake voltage that is available from
the line voltage:
Line voltage x 0.45 = Brake coil voltage
For example: 400 V AC x 0.45 = 180 V DC.
8.9.3.2
Dynamic braking
Typical applications for dynamic braking include:
● Horizontal conveyors
● Vertical and inclined conveyors
● Hoisting gear