
STR2 Quick Setup Guide
To begin, make sure you have the following equipment:
▪ A compatible stepper motor.
▪ A small at blade screwdriver for tightening the connectors (included).
▪ A suitable DC power supply. AMP recommends the PS50A24, PS150A24 or PS320A48 available from Applied Motion.
Wiring the Drive
Step 1 - Wiring the DC supply
a. Wire the drive to the DC power source.
(do not apply power until all connections to the drive have been made)
Note, the STR2 accepts DC voltages from 12-48V.
b. Ensure a proper earth ground connection by using the screw
on the left side of the chassis.
*See the STR2 Hardware Manual for more information about power supply
and fuse selection.
Step 2 - Wiring the motor
Connect the drive to the motor. Four lead motors can be connected in only one way, as shown in Figure 1.
Eight lead motors can be connected in Series or Parallel, as shown in Figures 2 and 3.
If using a non-Applied Motion Products motor, please refer to your motor specs for wiring information.
Red
A+
4
lead
Yellow
motor
White
B+ B–
A–
Blue
Figure 1 - 4-lead Connection
White
A+
Brown
8
lead
B+
Blue
motor
Yellow
Black
B–
Orange
A–
Green
Red
Figure 2 - 8-lead Parallel Connection
Figure 3 - 8-lead Series Connection
A+
Orange
Brown
A–
White
Green
Red
B+ B–
motor
Yellow
8
lead
Blue
Black
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Setting up the Drive
NOTE: DIP switch setting changes will only take effect at power up. If changes to the DIP switches
are made while power is applied, cycle power off then on for the new settings to take effect.
Step 3 - Selecting the motor
Motor selection is done with the DIP switch block on the
narrow face of the drive. These switches are referred to
as B1 - B3 in the STR2 Hardware Manual.
MOTOR
HT08-020/021
1 2 3
HT11-012/013
1 2 3
5014-842
HT17-068
1 2 3
1 2 3
Step 5 - Load inertia
Switch B4 chooses between two
load inertia ratio ranges.
This information is used in the
anti-resonance conguration.
4
5-10X40-4X
MOTOR
HT17-271
HT17-275
HT23-595
HT23-598
HT23-601
1 2 3
1 2 3
Step 6 - Step resolution
Switches A6 - A8 specify the drive’s micro-
step resolution
▪ 200
▪ 200 with microstep emulation (smooth)
▪ 400
▪ 400 with microstep emulation (smooth)
▪ 2000
▪ 5000
▪ 12800
▪ 20000
Step 4 - Selecting current
Switch A3 sets
the idle current to
either 50% or 90%
of the selected
running current.
3
50%390%
Switches A4 and A5 set the
running current to 70%, 80%,
90% or 100% of the motor’s
rated maximum current.
45
100%
678
20000
678 678 678
SMOOTH
45
90%
678 678
12800 5000 2000
400
45
80%
400 200
SMOOTH
70%
200
Step 7 - Self test
The STR has a built in Self Test function. If switch A1 is
moved to the ON position the drive will automatically rotate
the motor back and forth, two turns in each direction. This
feature can be used to conrm that the motor is correctly
wired, selected and otherwise operational.
1
1
ON
OFF
SELF TEST
If you have any questions or comments, please call
Applied Motion Products Customer Support:
(800) 525-1609, or visit us online:
www.applied-motion.com.
Step 8 - User manual
A full user manual for the STR is available for download
from our web site. This contains full details on setup,
wiring and installation.
www.applied-motion.com/support
404 Westridge Dr.
Watsonville, CA 95076
Tel: 800-525-1609
www.applied-motion.com
920-0113 C