KEB Combivert F5 Instruction Manual page 11

Flow chart at factory setting
Setpoint Bit 1 (X2A.11)
Setpoint Bit 0 (X2A.10)
Setpoint Bit 2 (X2A.12)
forward (X2A.14)
Start (X2A.16)
HS (X2A.24...26)
Brake (X2A.27...29)
t1: The bit sample for the setpoint values and the direction of travel is set. Immediately after that the inverter
sets the output for the main contactors.
t2: The control release (Start) is set by a relay parallel to the main contactor control. Thereupon the output
phase check is executed.
t3: Upon successful output phase check the brake output is set. Thereupon the brake opening time runs out.
Then the motor starts to turn.
t4: The rated speed is reset and switched over to leveling speed.
t5: The leveling speed is reset and the stopping is initiated.
t6: On reaching the speed 0 rpm the brake output is reset. Afterwards the brake engage time runs off.
t7: The output for the main contactor is reset and thus also the control release and the direction of travel.
Generally the inverter switches the main contactors only in currentless condition.
Description of the Unit
v
t1 t3
t2
t4 t5 t6 t7
t
GB - 11