CNC Stepping Driver DM320C for 2/4-phase Stepper Motor from NEMA 14/17/23 Motor

Introduction of Digital Stepping Drive:
The DM320C is a versatility fully digital stepping driver based on a DSP with advanced control algorithm. The DM320C is the next generation of digital stepping motor controls. It brings a unique level of system smoothness, providing optimum torque and nulls mid-range instability. Motor self-test and parameter auto-setup technology offers optimum responses with different motors and easy-to-use. The driven motors can run with much smaller noise, lower heating, smoother movement than most of the drivers in the markets. Its unique features make the DM320C an ideal solution for applications that require low-speed smoothness. Compared to the DM422C, the DM320C is more compact and lower cost.

 

Features of of Digital Stepping Drive:

? Anti-Resonance, provides optimum torque and nulls mid-range instability
? Motor self-test and parameter auto-setup technology, offers optimum responses with different motors
? Multi-Stepping allows a low resolution step input to produce a higher microstep output for smooth system performance
? Microstep resolutions programmable, from full-step to 102,400 steps/rev(Note1)
? Supply voltage up to +30 VDC
? Output current programmable, from 0.3A to 2.0A( Note1)
? Pulse input frequency up to 70 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, phase-error protection

 

Note: Microstep and output current programmable feature is reserved and not offered by standard version, because the RS232 connector of standard version is not installed on standard model.
 
Applications of Digital Stepping Drive:
Suitable for a wide range of stepping motors, from NEMA frame size 14 to 23. It can be used in various kinds of machines, such as laser cutters, laser markers, high precision X-Y tables, labeling machines, and so on. Its unique features make the DM320C an ideal solution for applications that require low-speed smoothness.

 

Electrical Specifications (Tj = 25oC/77oF)

Parameters	DM320C
	Min	Typical	Max	Unit
Output current	0.3	-	2.0 (1.43RMS)	A
Supply voltage	+20	-	+30	VDC
Logic signal current	7	10	16	mA
Pulse input frequency	0	-	70	kHz
Isolation resistance	500			MO

 

Mechanical Specifications ( unit: mm [inch] )

 

Pin Assignment and Description

Connector P1 Configurations

Pin Function	Details
PUL+	Pulse signal: In single pulse (pulse/direction) mode, this input represents pulse signal, each rising edge active; 4-5V when input is HIGH, 0-0.5V when input is 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 6.7µs. Series connect resistors for current-limiting when +12V or +24V used. The same as DIR and ENA signals. (Note: CW/CCW mode is not supported by standard version and need to be specified when place order.)
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 input is HIGH, 0-0.5V when DIR input is LOW. Please note that rotation direction is also related to motor-driver wiring match. Exchanging the connection of two wires for a coil to the driver will reverse motion direction.
DIR-
ENA+	Enable signal: This signal is used for enabling/disabling driver. High level for enabling the driver and low level for disabling the driver. Usually left UNCONNECTED (ENABLED).
ENA-
ALM+	Enable signal: Alarm signal output. OC output, high impedance when the working status is normal and low impedance when over-voltage, over-current, phase error activate.
ALM-

 

Connector P2 Configurations

Pin Function	Details
GND	Power Ground.
+Vdc	Power supply, 20~30 VDC, Including voltage fluctuation and EMF voltage.
A+, A-	Motor Phase A
B+, B-	Motor Phase B

 

Selecting Microstep Resolution and Drive Output Current

Microstep resolutions and output current are programmable, the former can be set from full-step to 102,400 steps/rev and the latter can be set from 0.3A to 2.0A.

Note: Microstep and output current programmable feature is reserved and not offered by standard version, because the RS232 connector of standard version is not installed on standard model.

 

However, when it's not in software configured mode, this driver uses a 6-bit DIP switch to set microstep resolution, and motor operating current, as shown below:

 

Microstep Resolution Selection
When it's not in software configured mode, microstep resolution is set by SW5, 6 of the DIP switch as shown in the following table:

Microstep	Steps/rev.(for 1.8omotor)	SW5	SW6
1 to 512	Default/Software configured	on	on
4	800	OFF	ON
16	3200	ON	OFF
64	12800	OFF	OFF

 

Current Settings

When it?s not in software configured mode, the first three bits (SW1, 2, 3) of the DIP switch are used to set the dynamic current. Select a setting closest to your motor?s required current.

Peak Current	RMS Current	SW1	SW2	SW3
Default/Software configured (0.3 to 2.0A)		ON	ON	ON
0.5A	0.36A	OFF	ON	ON
0.7A	0.50A	ON	OFF	ON
1.0A	0.71A	OFF	OFF	ON
1.2A	0.86A	ON	ON	OFF
1.5A	1.07A	OFF	ON	OFF
1.7A	1.22A	ON	OFF	OFF
2.0A	1.43A	OFF	OFF	OFF

Note: Due to motor inductance, the actual current in the coil may be smaller than the dynamic current setting, particularly under high speed condition.

 

Typical Connection:

 

 

Package included:

1 x Ditigal stepping drive