Operating Instructions ACTIVE06/07 137
06/07 Operating Instructions ACTIVE 137
14.3.3 Flux Formation Ended
If operation mode 30 is selected for a digital output the corresponding output be-
comes active when the flux formation is ended. The time for the flux formation results
from the operating state of the machine and the set parameters for magnetizing the
machine. The magnetizing can be defined via the starting behavior and is influenced
by the amount of the set starting current.
14.3.4 Open brake
The Open brake function in operation mode 41 enables the activation of a corre-
sponding unit via the digital control output. The function uses both the control com-
mands via the contact inputs and the set starting and stopping behavior for controlling
the digital output.
According to the configured starting behavior, the output is switched on when the
magnetizing of the motor is finished. The brake is released and the drive is acceler-
ated.
The stopping behavior of the drive depends on the configuration of the parameters
Operation Mode 630. This is described in chapter "Stopping Behavior".
If stopping behavior 2 or 5 with stop function is selected, the drive is controlled to
zero speed and the digital output is not switched off. In the other operation modes of
the stop behavior, the control of the brake is possible. At the start of a free coasting
of the drive, the digital output is switched off.
This is similar to the behavior in the case of the stopping behavior with shutdown. The
drive is decelerated and supplied with current for the set holding time. Within the set
holding time, the control output is switched off and thus the brake activated.
Control of Brake
Stopping Behavior
0
Operation mode "41-Open brake" switches off the digital
output assigned to the function immediately. The me-
chanical brake is activated.
Stopping Behavior
1, 3, 4, 6, 7
Operation mode "41-Open brake" switches off the digital
output assigned to the function when
Switch-Off Thresh-
old
637 is reached. The mechanical brake is activated.
Stopping Behavior
2, 5
Operation mode "41-Open brake" leaves the digital output
assigned to the function switched on. The mechanical
brake remains open.
14.3.5 Current Limitation
Operation modes 15 to 19 link the digital outputs and the relay output to the func-
tions of the intelligent current limits. The reduction of power by the set figure in per-
cent of the rated current depends on the selected operation mode. Accordingly, the
event for intervention of the current limitation can be output via the operation modes
of the digital outputs. If the function of the intelligent current limits is deactivated
within the sensor-less control, operation modes 16 to 19 are switched off in the same
way.
14.3.6 External Fan
Operation mode 43 enables the control of an external fan. Via the digital output, the
fan is switched on if the controller is released and Start clockwise or Start anticlock-
wise are switched on, or if the
Switch-On Temperature 39 for the internal fan was
reached.
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