Single Phase Connections for UnidriveM Frame 7 and Up

For frame sizes 3 to 6 the input rectifier consists of a standard diode bridge and therefore is does not matter which combination of the L1, L2 or L3 inputs are used for the single phase input connections. 

For drives with controlled rectifier (frame size 7 upwards) it is necessary to connect two of the three input supply terminals together (any two input terminals can be connected together). Unidrive M frame sizes 7, 8 and 9A have internal AC line chokes.