Pure-sinusoidal precise current control technology
Extreme low motor noise
Both driver and motor low heating
高度 performance, low cost
Supply voltage up to +50VDC, peak current to 5.6A
Optically isolated differential input signals
Pulse frequency up to 400 KHz
Automatic idle-current reduction
15 selectable resolutions in decimal and binary
Suitable for 4,6,8 lead motors
DIP switch current setting with 8 different values
Over-voltage and short-circuit protection
Introduction:
MD556 is a high performance microstepping driver using pure-sinusoidal wave current control technology, it is particularly suitable for applications desired with extremely low noise and low heating. 电流ly most of the microstepping drivers in the market apply pseudo-sinusoidal current control technology, which makes the output current to be a distorted sine wave, or makes much current ripple, both cause the motor higher noise and bigger vibration, furthermore cause serious motor heating, so when the motor works long time, the torque decrease, motor aging and the use life shorted. However the pure-sinusoidal precise current control technology (domestic patented technology) applied by MD556 can improve above problems very well, and the operating effect of the stepping motor is somehow inclined to that of servo motor.
应用s:
Suitable for a wide range of stepping motors of NEMA 17, 23 and 34, and usable for various kinds of machines, such as X-Y tables, labeling machines, laser cutters, engraving machines, and pick-place devices. Particularly useful in applications with extremely low noise and low vibration, high speed and high precision are desired.
Electric 参数 (Tj=25o)
Parameters
MD556
Min.
Typical
Max.
单位
Output current
1.4
-
5.6 (4A RMS)
Amps
Supply voltage (DC)
20
36
50
VDC
Logic signal current
7
10
16
mA
Pulse input frequency
0
-
400
Khz
Isolation resistance
500
-
-
MΩ
Mechanical 参数 (单位: mm, 1 inch=25.4 mm)
Pin Assignment and 描述
Control Signal Connector P1 pins
Pin Function
Details
PUL﹢(+5V)
Pulse signal: in single pulse (pulse/direction) mode, this input represents pulse signal, effective for each rising edge; 4-5V when PUL-HIGH, 0-0.5V when PUL-LOW. In double pulse mode (pulse/pulse) this input represents clockwise (CW) pulse. For reliable response, pulse width should be longer than 1.2us. Series connect resistance for current-limiting when +12V or +24V used.
PUL- (PUL)
DIR+ (+5V)
DIR signal: HIGH/LOW level signal, corresponding to motor rotor direction. For reliable response, DIR must be ahead of PUL by 5ms at least, the initial motor direction is related with motor wiring, exchange any set of coil can reverse motor initial direction. 4-5V when DIR- HIGH, 0-0.5V when LOW.
DIR- (DIR)
ENA+ (+5V)
Enable signal: this signal is used for enabling/disabling the driver. 高度 level for enabling the driver and low level for disabling the driver. Usually left unconnected (enabled).
ENA- (ENA)
功率 connector P2 pins
Pin Funtion
Details
Gnd
DC power ground
+V
DC power supply, +20VDC － +50VDC, Including voltage fluctuation and EMF voltage.
Phase A
电机 coil A (leads A+ and A-)
Phase B
电机 coil B (leads B+ and B-)
Microstep Resolution Selection
Microstep resolution is specified by 5, 6, 7,8 DIP switches as shown in the following table:
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