DM503 Fully Digital Stepper Drive Manual V1.0
1
1. Introduction, Features and Applications
Introduction
The DM503 is a fully digital stepper drive developed with advanced DSP control algorithm based on the latest motion
control technology. It has achieved a unique level of system smoothness, providing optimal torque and nulls mid-range
instability. Its motor auto-identification and parameter auto-configuration feature offers quick setup to optimal modes
with different motors. Compared with traditional analog drives, DM503 can drive a stepper motor at much lower noise,
lower heating, and smoother movement. Its unique features make DM503 an ideal choice for high requirement
applications.
Features
Anti-Resonance provides optimal torque and nulls mid-range instability
Motor auto-identification and parameter auto-configuration technology, offers optimal responses with different
motors
Multi-Stepping allows a low resolution step input to produce a higher microstep output, thus offers smoother
motor movement
15 selectable microstep resolutions including 400, 800, 1600, 3200, 6400, 12800, 25600, 1000, 2000, 4000, 5000,
8000, 10000, 20000, 25000
Soft-start with no “jump” when powered on
Input voltage 18-50VDC
8 selectable peak current including 1.00A, 1.46A, 1.91A, 2.37A, 2.84A, 3.31A, 3.76A, 4.20A
Pulse input frequency up to 200 KHz, TTL compatible and optically isolated input
Automatic idle-current reduction
Suitable for 2-phase and 4-phase motors
Support PUL/DIR and CW/CCW modes
Over-voltage, over-current protections
Applications
Suitable for a wide range of stepping motors, from NEMA size 17 to 34. It can be used in various kinds of machines,
such as X-Y tables, engraving machines, labeling machines, laser cutters, pick-place devices, and so on. Particularly
adapt to the applications desired with low noise, low heating, high speed and high precision.
2. Specifications
Electrical Specifications (T
j
= 25
℃
/77
℉
)
Parameters
DM503
Min
Typical
Max
Unit
Output Current
1.0
-
4.2 (3.0 RMS)
A
Input Voltage
+20
+36
+50
VDC
Logic Signal Current
7
10
16
mA
Pulse input frequency
0
-
200
kHz
Pulse Width
2.5
-
-
uS
Pulse Voltage
5
-
24
VDC
Isolation resistance
500
MΩ
