... 100.0s; brake unit for GK800-4T45 and below is built inDC brake capacityDC brake start frequency: 0.00~600.00HzDC ... voltage stall prevention, restart upon power off selectable, hopping frequency function, frequency binding function, free switch between four-segment acceleration/deceleration ... , crusher, pump, fan, etc. close loop vector control variable frequency converter for lift elevator escalator