1303 - Microstepping motor controller with PWM current control

MODEL 1303/1304

Microstepping Motor Driver

image of 1302 driver board

Features:

7 Microstepping resolutions from 1 to 18 microsteps per step
1-3A and 2-6A per phase in 0.25/0.5 Amp increments
Single supply voltage +15 to +50VDC
Will drive step motors from NEMA 17 to 42
Auto power reduction after 1 second idle
No additional components or heatsinking required
Screw terminal connections for motor and power
Step and direction inputs
No adjustments required

Description
The 1303 is a universal user programmable microstepping driver for driving size 17 to 42 stepper motors. The motor current is programmable from 1A to 3A in 0.25A increments for the model 1303, and 2A to 6A in 0.5A increments for the 1304. Both models are powered by a single unregulated supply from +15 to 50VDC. Input control is via step and direction inputs.

Regulation is provided by a PWM controller which results in low power loss and no additional heatsinking requirements. Auto power reduction when stationary can also be used to further reduces heat buildup.

DIP Switch Functions

POS	OFF	ON
1		1
2		2
3		4
4		8
5	Set Step Mode	Set Motor Current
6	Run	Program

Microstep Resolution Table

DIP Switches 4 .. 1	Microsteps (1.8Deg Motor)	Steps per Revolution
0001	1	200
0010	2	400
0011	4	800
0100	8	1600
0101	16	3200
0110	10	2000
0111	18	3600

Peak Motor Current Table

DIP Switch	1-3Amp 1303	2-6Amp 1304
0100	1	2
0101	1.25	2.5
0110	1.5	3
0111	1.75	3.5
1000	2	4
1001	2.25	4.5
1010	2.5	5
1011	2.75	5.5
1100	3	6

Rear Screw Terminals

A+	Motor Phase A+
A-	Motot Phase A-
B+	Motor Phase B+
B-	Motor Phase B-
V+	Power Supply Positive 15 - 50VDC
Gnd	Power Supply Ground

The power supply must be smoothed but need not be regulated. The maximum voltage includes power supply ripple amd noise spikes.

Input Connector

Step	Step Input Signal
Dir	Step Direction Input
Enable	Enable Input
Gnd	Signal Ground

Pricing

$149 each

$139 each for 3 or more

All pricing includes GST.