phytron 10010115, Руководство пользователя

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phytron
27 MA 2112-A002 GB
7.2.3 Control Pulses
Maximum pulse frequency: 500 kHz
Minimum pulse width 1 µs
The step is done with the falling flank of the control pulses signal.
The control pulse sequency must not suddenly start or stop, if the control pulse frequency
is higher than the start/stop frequency
1
of the motor. Mispositioning of the drive would be
the result.
If the motor is to be operated above the start/stop frequency range, the indexer has to
generate frequency ramps to accelerate and decelerate the motor.
Current delay time
After the last control pulse the stop current is activated after a waiting time. The waiting
time after the last control pulse until the changing to the stop current is called current delay
time. The current delay time can be set in the Setup menu, the default value is 40 msec.
Warning:
As long as the Boost input is energized, the motor current will always be the Boost
current.
Although no control pulses arrive, the stop current is
not activated!
7.2.4 Direction
If the input optocoupler is powered, the selected motor direction of rotation is reversed.
Don’t change the signal 1 µsec before the rising flank and after the falling flank of the
control pulses!
7.2.5 Boost
If the input optocoupler is energized the CLD
+
sets the current to the selected value for the
Boost current. Therefore it is possible, to set a Boost current, which is higher than the run
current.
Thus, a higher torque can be reached during the acceleration and deceleration time of the
motor.
As long as the Boost input is energized, the motor current will always be the Boost
current. No change to the stop current!
1
The start/stop frequency is defined as that frequency, from which a stepper motor can start from standstill
without losing a step. Typical values for the start/stop frequency are 200 to 2000 Hz. The exact value
depends on the load torque and the load inertia on the motor shaft.