Lenze 931M-931W - Manual (Page 96)

Device control
State diagram
State diagram of the drive controller
8

96 KHB 13.0003-EN 2.0
8.1.2 State diagram of the drive controller
Start
Switch_On_Disabled
Ready_To_Switch_On
Switched_On
Operation_Enable Quick_Stop_Active
Fault
Fault_Reaction_Active
Not_Ready_To_Switch_On
0
15
2
3
4 5
6
7
8 9
10
11
13
14
1
1 0
2
12
931e_421
Fig. 12 State diagram of the drive controller
 Power disabled (power stage is inhibited)
 Fault (error)
 Power enabled (power stage is switched on)

Danger!
Hazardous electrical voltage
Power stage disabled means that the power transistors are no longer
controlled. A hazardous voltage can, however, still be applied to the motor.
Possible consequences:
ƒ
Extreme danger when working on the motor.
Protective measures:
ƒ Disconnect the motor from the mains before working on the motor.
After power-on, the controller is initialised and finally reaches the Switch_On_Disabled
status. In this status, the CAN communication is fully operational and the controller can be
parameterised (speed control can, for instance, be selected). The power stage is switched
off and the shaft can thus freely rotate.