SureStep STP-DRV-4035, Схема подключения

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Chapter 3: Sure Step
TM
STP-DRV-4035 Microstepping Drive
Sure Step
TM
Stepping Systems User Manual
3–10
5th Ed., Rev. B 01/2019
Setting Phase Current
Before you turn on the power supply the first time, you need to set the drive for
the proper motor phase current. The rated current is usually printed on the motor
label. The SureStep drive current is easy to set. If you wish, you can learn a simple
formula for setting current and never need the manual again. Or you can skip to the
table on the next page, find the current setting you want, and set the DIP switches
according to the picture.
Current Setting Formula
Locate the bank of tiny switches near the motor connector. Five of the switches, DIP
switch positions 5-9, have a value of current printed next to them, such as 0.1, 0.2,
0.4, 0.8 and 1.6. Each switch controls the amount of current, in amperes (A), that
its label indicates in addition to the minimum current value of 0.4 Amps.
There is
always a base current of 0.4 Amps, even with all five DIP switches set to the “off”
position (away from their labels).
To add to that, slide the appropriate switches
toward their labels on the PC board. You may need a small screwdriver for this.
DIP switch current total settings =
step motor required phase current – 0.4 Amps always present base current
Example
Suppose you want to set the drive for 2.2 Amps per
phase based on the step motor showing a phase
current of 2.2 Amps. You need the base current of
0.4 Amps plus another 1.6 and 0.2 Amps.
2.2 = 0.4 + 1.6 + 0.2
Slide the 1.6 and 0.2 Amp DIP switches toward the
labels as shown in the figure to the right.
Step A+ A– B+ B–
0
1
2
3
4
5
6
7
8
DIR=1
cw
DIR=0
ccw
Step 0 is the Power Up State
Step Table
(half stepping)
open
+
+
+
open
–
–
–
open
open
–
–
–
open
+
+
+
open
+
+
open
–
–
–
open
+
+
–
–
open
+
+
+
open
–
–
0.1
0.2
0.4
0.8
1.6
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