Festo SEC-AC-305-CO, Manual

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6. Device Control/State diagram (State machine)
6−10
Festo P.BE−SEC−AC−CO−E N en 0802a
No. Executed if Bit combination (controlword) Action
Bit 3 2 1 0
12 Braking has ended or
Command Disable Voltage Disable Voltage = x x 0 x Power stage is disabled.
Motor is freely rotatable
13 Error occurred internal transition On non−critical errors reac
tion according to fault_re
action_option_code. On
critical error executing
transition 14.
14 Error treating has ended internal transition Power stage is disabled.
Motor is freely rotatable
15 Cause of fault remedied +
Command Fault Reset Fault Reset =
Bit 7 =
Reset fault (Rising edge)
Warning
Power stage disabled
This means the transistors are not driven anymore. If this
state is reached on a rotating motor, the motor coasts
down without being braked
. If a mechanical motor brake
is available it will be locked.
Caution
This does not ensure that the motor is not under voltage.
Warning
Power stage enabled
This means the motor will be controlled according to the
chosen mode of operation. If a mechanical motor brake is
available it will be released. A defect or an incorrect para
meter set−up (Motor current, number of poles, resolver
offset angle, etc.) may cause an uncontrolled behaviour of
the motor.