2 Phase Stepper Driver DM556

Features

1. Extra-low motor noise.

2. Anti-resonance, provides optimum torque and nulls mid-range instability.

3. Self-test and auto-configuration technology, offers optimum responses with different motors.

4. Microstep resolutions programmable.

5. Supply voltage up to +50 VAC.

6. Output current programmable, from 0.5A to 5.6A.

7. Pulse input frequency up to 200KHz.

8. Automatic idle-current reduction.

9. Supports PUL/DIR and CW/CCW modes.

Specification

Parameters	DM556
	Min.	Typical	Max.	Unit
Output Current	0.5	–	5.6(4.0RMS)	A
Supply Voltage	20VAC	–	50VAC	V
Logic Signal Current	7	10	16	mA
Pulse Input Frequency	0	–	200	kHz
Step Revolution	400		25600	Pulse/Rev
Isolation Resistance	500			MΩ
Suitable Stepper Motors	NEMA 17, 23

 

Mechanical Specification(Unit: mm)

 

Connections

 

PIN Assignment and Description

P1       Function	DM556 Details
PUL+	Pulse signal: In single pulse (pulse/direction) mode, this input represents pulse signal, each rising or falling edge active (software configurable); 4-5V when PUL-HIGH, 0-0.5V when PUL-LOW. In double pulse mode (pulse/pulse) , this input represents clockwise (CW) pulse,active both at high level and low level (software configurable). For reliable response, pulse width should be longer than 2.5µs. Series connect resistors for current-limiting when +12V or +24V used. The same as DIR and ENA signals.
PUL-
DIR+	DIR signal: In single-pulse mode, this signal has low/high voltage levels, representing two directions of motor rotation; in double-pulse mode (software configurable), this signal is counter-clock (CCW) pulse,active both at high level and low level (software configurable). For reliable motion response, DIR signal should be ahead of PUL signal by 5µs at least. 4-5V when DIR-HIGH, 0-0.5V when DIR-LOW. Please note that rotation direction is also related to motor-drive wiring match. Exchanging the connection of two wires for a coil to the drive will reverse motion direction.
DIR-
ENA+	Enable signal: This signal is used for enabling/disabling the drive. High level (NPN control signal, PNP and Differential control signals are on the contrary, namely Low level for enabling.) for enabling the drive and low level for disabling the drive. Usually left UNCONNECTED (ENABLED).
ENA-

 

P2 Function	DM556 Details
+Vdc	Power supply, 20~50 VDC, Including voltage fluctuation and EMF voltage.
GND	Power Ground
A+, A-	Motor phase A
B+, B-	Motor phase B