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CHAPTER 8 – Operation with Profibus
SMT-BD1/t
The 3 OFF1, OFF2 and OFF3 functions allow various ways to disable the motor.
The functions "Error" and "OFF" are effective at each level of the diagram. "OFF3" is a stop with maximum
deceleration. "OFF2" has a priority over "OFF1" which has a priority over "OFF3".
Contrarily to the parameter setting, there is no direct acknowledgement for each control word bit.
The unwinder/rewinder status must be checked in order to make sure that the command could be executed.
3.2 - Unwind/rewind mode
When the unwinder/rewinder is in "Operation enabled" status, the following is possible:
- starting a sequence execution (bit 6),
- jog+ or jog- (bit 8 or 9),
- stopping the motor with a programmed deceleration - the one defined by JOG (bit 5) -,
- stopping the motor with maximum deceleration (bit 4).
Execution of a sequence
Acknowledgment of the command with edge on
S.12
Operation
enabled
unwind/rewind
function
JOG
JOG
C.8 = 1 or
C.9 = 1
JOG end
C.8 = C.9 = 0
Brake with
ramp
Brake with
max
deceleration
Intermediate stop
C.5 = 0
Stop
C.4 = 0
Intermediate
stop
S13=1
C.5 = 1
Unwinder/rewinder
activation C.4 = 1
edge on C.6
Execution of
a new
sequence
Drive task
over
Motor stopped