在最新的英文样本（D31.2012）中是这样描述的

PM240 Power Modules have a braking chopper (four-quadrant applications) and are suitable for a large number of applications in general machinery construction.
The braking chopper is already integrated in frame sizes FSA up to FSF. For frame size FSGX, an optional pluggable Braking Module can be ordered (see DC link components).