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GS-D500A 데이터시트(PDF) 7 Page - STMicroelectronics

부품명 GS-D500A
상세설명  100V/5A STEP AND MICROSTEP DRIVE BOARD FOR STEPPER MOTORS
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

GS-D500A 데이터시트(HTML) 7 Page - STMicroelectronics

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A1 - SUPPLY VOLTAGE
THE POWER SUPPLY MUST BE TURNED OFF WHEN
PLUGGING OR UNPLUGGING THE BOARD
The supply pins are:
J2-1 for Motor Supply Voltage
J2-3 for Auxiliary Voltage
J2-2,4 for Ground rail
The other supply voltages needed by the boards
are internally generated.
If an undervoltage condition is detected (Vs < 10V)
the GS-D500A is automatically disabled and a led
is activated.
The Motor Supply voltage is in the range from 12 to
100V, the Auxiliary voltage from 11 to 13V.
At power-on the Auxiliary Supply voltage must
be applied before the Motor Supply voltage,
while at power-off the Motor Supply voltage
must be removed before the Auxiliary voltage.
A2 - FULL-STEP/HALF-STEP/MICROSTEP PRO-
GRAMMING BY HARDWARE
The number of microsteps per step is field program-
mable. The digitized sine and cosine functions,
required by a microstepping control, are stored in a
Lock-Up-Table inside the GS-D500A.
Two options are provided for the proper mi-
crosteps/step rate selection.
Three switches (SW1, SW2, SW3) are available on
the front edge of the board.
The full-step/half-step/microstep mode is defined
by the following table.
SW1
SW2
SW3
MODE
OFF
ON
OFF
Half step
ON
ON
OFF
125 microsteps/step
ON
OFF
ON
25 microsteps/step
OFF
ON
ON
5 microsteps/step
ON
ON
ON
Full step
The switches are in OFF condition when the knob
is pulled versus the board edge. Invalid combina-
tions disable the board.
A2.1 - MICROSTEP PROGRAMMING BY HOST
COMPUTER
The microsteps/step rate can also be remotely
changed by using the three logic inputs available
on the J3 connecto r (pins 4,12 and 15) that cor-
responds, respectively, to SW1, SW2, SW3.
The interactionbetween logic signals and hardware
switches is shown in fig. 4.
Figure 7. Remote microstepping programming
To operate the logic pins of the J3 connector, the
three internal switches must be in the OFF state.
A3 - CURRENT REDUCTION AT REST
Phase current can be reduced when the motor is
stopped if SW6 is open.
Current reduction is operative about 1 second after
the last clock pulse.
GS-D500A


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