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參數(shù)資料
| 型號(hào)： | GS-D500A |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 100V/5A STEP AND MICROSTEP DRIVE BOARD FOR STEPPER MOTORS |
| 中文描述： | 100V/5A STEP和微步驅(qū)動(dòng)板步進(jìn)電機(jī) |
| 文件頁(yè)數(shù)： | 8/10頁(yè) |
| 文件大?。?/td> | 99K |
| 代理商： | GS-D500A |
8/10
A4 - SETTING OF THE DIRECTION POLARITY
The rotationdirection signal must be appliedat pin
J3-3.
The direction (CW or CCW) dependson the status
of the direction signal as shown in the following
table:
DIR. SIGNAL
ROTATION
HIGH
CCW
LOW
CW
A5 - PHASE CURRENT PROGRAMMING
The phase current can be programmed by means
two on-board trimmer called R42 and R43 (see
mechanicaldrawing).
R42 programs the current in phaseAB, while R43
programs the current in phase CD.
A6 - MIDRANGE STABILITY
Aparticularcircuitry isimplemented onthe boardto
avoid midrange oscillations.
This circuit is inserted on the current control loop
when SW5 is OFF.
A7
CROSTEP/CONSTANT CURRENT SWITCHING
(SW4)
-
CURRENT
SELECTION
IN
MI-
When the board is used to drive a motor in mi-
crostepmode,anautomaticswitchingfromsinusoi-
dal/cosinusoidal current to constant current is
performed when the sinusoidal output wave-
form exceeds 500Hz. The constant output cur-
rent can be chosen to be 0.707 of the peak
current or the peak current: this possibility is
given by SW4. (See fig. 8).
SW4 OFF
0.707 x Ipeak
SW4 ON
Ipeak
Figure 8. Current selection by SW4
An histeresys is insertedon the 500Hzthresholdto
avoid unwanted oscillations.
GS-D500A
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