Tiger 370 CNC--MR, Use And Maintenance Manual

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6--3 60 Diagrams, exploded views and replace--
APS/P drive for step motors
FOREWORD
This drive allows you to control a step motor, using the input steps (STEP---IN).
The motor completes one step on the LOW---HIGH transition of this signal.
When the DIRECTION input is connected to +12 Vdc/+24 Vdc the motor will
turn clockwise. When it is disconnected, or connected to 0V the drive will turn
anti---clockwise.
When the ENABLE input is connected to +12 Vdc/+24 Vdc the drive is disabled
(current on motor = 0) resulting in the rotation of the motor being interrupted.
When it is disconnected, or connected to 0 V, the drive will be re---enabled and
the motor will be energised after at least 1 step is started.
When the CURRENT REDUCTION input is connected to +12 Vdc/+24 Vdc
the current on the motor will be reduced. When it is disconnected or connected to
0V the current will be returned to the regular level.
The rate of acceleration/deceleration, the current, and the step division, can be
adjusted using the dip---switches and trimmers on the card (see tables).
The two outputs allow the machine to display if the drive is protected
(READY_OUT) and if positioning in progress has finished (BUSY).
CHARACTERISTICS
CUT APS3/P
VDC NOM. [V] 40 --- 80
VDC MAX. [V] 90
VDC MIN. [V] 30
I MAX. [A] 10
I MIN. [A] 1
I PASSO [A] 0.5
Operating temperature [° C]
0--55
MEANING OF THE PARAMETERS IN THE TABLE
H
Vdc nom: Nominal voltage at which the drive can be powered.
H
Vdc max: Maximum voltage at which the drive can operate, where this limit is
exceeded the protection intervenes, inhibiting the operation of the drive itself.
H
Vdc min:
Minimum voltage at which the drive can operate. When the voltage
drops below this limit, the protection intervenes, inhibiting the operation of the
drive itself.
H
I max:
Maximum value for the phase current.
H
I min: Minimum value for the phase current.
H
I step: Difference between the settable current values.
H
Operating temperature: Forced ventilation is necessary for currents exceeding
6A.