Moons' Applied Motion Products STRAC2 User manual

Applied Motion Products, Inc.
Hardware Manual
STRAC2
AC Input Step Motor Drive

2
STRAC2 Hardware Manual
920-0118 Rev B
03/26/21
Table of Contents
1 Introduction.................................................................................................................................................... ...3
1.1 Features...............................................................................................................................................................3
1.2 Block diagram .....................................................................................................................................................4
2 Mounting the Drive ........................................................................................................................................ ...4
3 Connections................................................................................................................................................... ...5
3.1 Connecting to Power...........................................................................................................................................6
3.3 Connecting the Inputs and Outputs .....................................................................................................................8
3.3.1 Step & Direction Inputs.............................................................................................................................8
3.3.2 EN input....................................................................................................................................................9
3.3.3 Fault Output.............................................................................................................................................10
4 Switch Selection............................................................................................................................................. ..11
4.1 Microstep Resolution .........................................................................................................................................11
4.2 Running Current.................................................................................................................................................12
4.3 Idle Current ........................................................................................................................................................12
4.4 Step Input Signal Filter.......................................................................................................................................12
4.5 Anti Resonance...................................................................................................................................................12
4.6 Step Smoothing Filter.........................................................................................................................................13
4.7 Self Test..............................................................................................................................................................13
4.8 Step/Direction Mode and CW/CCW Mode Jumper ............................................................................................13
5 Motor selection.............................................................................................................................................. ..14
5.1 Recommended motors .......................................................................................................................................15
5.2 Torque-Speed Curves ........................................................................................................................................15
6 Error Codes.................................................................................................................................................... ..16
7 Reference Materials........................................................................................................................................ ..17
7.1 Mechanical Outline ............................................................................................................................................17
7.2 Specifications.....................................................................................................................................................18
7.2.1 Electrical Specifications...........................................................................................................................18
7.2.2 Environmental Specifications...................................................................................................................18
7.3 Matting Connectors............................................................................................................................................18
8 Contacting Applied Motion Products ............................................................................................................. ..19

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STRAC2 Hardware Manual
920-0118 Rev B
03/26/21
1 Introduction
Thank you for selecting the Applied Motion Products’ STRAC2 Step Motor Drive. The STRAC2 series AC input drives are based on
advanced digital current control technology and provide high torque, low noise and low vibration. Many of the operational paramteres
are switch selectable. We hope our dedication to performance, quality and economy will make your motion control project successful.
1.1 Features
• Advanced digital current control provides excellent high speed torque
• Auto Setup measures motor parameters and configures motor current control and anti-
resonance gain settings
• Uses universal AC input 90 to 240 VAC, AC Input Voltage must be selected by switch
• Speed Range - up to 50 rps
• Microstep Resolution - switch selectable, 16 settings: 200, 400, 800, 1600, 3200, 6400,
12800, 25600, 1000, 2000, 4000, 5000, 8000, 10000, 20000, 25000 steps/rev
• Running Current - peak setting, switch selectable, 8 settings: 0.6A, 0.8A, 1.0A, 1.2A, 1.6A,
1.8A, 2.0A, 2.5A.
• Idle Current - automatic reduction of running current 1 second after the motor stops, switch
selectable, 2 settings: 50%, 90% of running current
• Anti Resonance - raises the system-damping ratio to eliminate midrange instability and allow
stable operation throughout the speed range of the motor, switch selectable, 2 settings for low
to high inertia loads
• Control Modes - Step/Direction pulse input or CW/CCW pulse input, internal jumper switch
selectable
• Input Signal Filter - filters out unwanted noise that can cause extra steps, switch selectable,
2MHz or 150KHz
• Step Smoothing Filter (Microstep Emulation) - performs high resolution stepping by
synthesizing coarse steps into fine micro-steps, switch selectable, ON or OFF
• Self Test - performs a1 rev, 0.5RPS, CW/CCW move test, switch selectable, ON or OFF
• Motor Selection - a 16 bit rotary switch is used to select the desired motor database which is
pre-loaded at the Factory

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1.2 Block diagram
STEP
DIR
OUT
EN
Gate
Drivers
(3)
Optical
Isolation
output
Optical
Isolation
output
Over
Current
Det.
DSP
5V
switching
reg
MOSFETs
(6) motor
Voltage
Det.
10V
reg
3.3V
reg
LED
STRAC2
Block Diagram
Step Noise Filter
Load Inertia
Smoothing Filter
Self Test
Step Res 1
Step Res 2
Step Res 3
Step Res 4
Current Set 1
Current Set 2
Current Set 3
Idle Current
90～135VAC
AC Input 135～240VAC
2 Mounting the Drive
The STRAC2 drive can be mounted only on the narrow side of the chassis. M4 screws should be used in the two holes at the back of
the drive.
The amplifiers in the drive generate heat. To operate the drive continuously at maximum power forced air cooling, as from a fan, should
be provided.
Never use the drive in a space where there is no air flow or where other devices can cause the surrounding air to be more than 40 °C.
Never put the drive where it can get wet or where metal particles can fall into it.
Never use the drive in a space where there is no air flow or where other devices can cause the
surrounding air to be more than 40 °C
Never put the drive where it can get wet or where metal particles can fall into it

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STRAC2 Hardware Manual
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3 Connections
To use the STRAC2 Step Drive, the following items are needed:
• Universal AC input of 90 to 240 VAC
• Pulse & Direction signal
• A compatible step motor
• AC input voltage must be selected by switch
T

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STRAC2 Hardware Manual
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3.1 Connecting to Power
Use the supplied connector to connect to the AC supply according to the diagram below. Use 16 AWG wire for Line (L) and Neutral (N).
Use 14 AWG for Earth Ground (G).
AC input voltage must be selected by switch.Check input voltage avoiding damage before power on!
Input Voltage between 90Vac to 135Vac: Set the switch on 115V Status
Input Voltage between 135VAC to 240VAC: Set the switch on 230V Status
The STRAC2 contains an internal 5A fast acting fuse.
Earth Ground (green)
Neutral (white)
Line-hot (black)
Care should always be taken when working with high voltages.
3.2 Connecting to a Motor
Motor connections should be made according to the following diagrams.
Never connect or disconnect the motor while the power is on.
Note: it is highly recommended that you use a motor with a shielded cable with the STRAC2. Always connect the cable drain wire to the
drive’s terminal (next to the A+ terminal)
The recommended Applied Motion motors for the STRAC2 include shielded cables. See the Recommended Motors section for a list of
part numbers.
Be sure to connect the cable shield for safety and to minimize electrical interference.
A+
A–
B+ B–
8
lead
motor
8 Leads Series Connected 8 Leads Parallel Connected
8
lead
motor
White
Orange
Brown
Green
Red
Yellow
Blue Black
White
Brown
Orange
Green
Red
Blue Yellow
Black
B+
A+
A–
B–

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Connecting Other Motors
If you do want to connect other motors , here is some information that will help
Four lead motors can only be connected one way. Please follow the sketch at the right.
A+
A–
B+ B–
4
lead
motor
Red
Blue
Yellow White
4 Leads
Six lead motors can be connected in series or center tap. In series mode, motors produce more torque at low speeds, but cannot run as
fast as in the center tap configuration. In series operation, the motor should be operated at 30% less than the rated current to prevent
overheating. Winding diagrams for both connection methods are shown below. NC means not connected.
A+
A–
NC
B+
B– NC
6
lead
motor
Red Black
Red/
Wht
Green
Grn/Wht
White A+
A–
NC
B+B– NC
6
lead
motor
Grn/Wht
White
Green
Red
Red/
Wht
Black
6 Leads Series Connected 6 Leads Center Tap Connected
Eight lead motors can also be connected in two ways: series and parallel. As with six lead motors, series operation gives you less torque
at high speeds, but may result in lower motor losses and less heating. In series operation, the motor should be operated at 30% less
than the unipolar rated current. The wiring diagrams for eight lead motors without shielded cables are shown below.
A+
A–
B+ B–
8
lead
motor
8 Leads Series Connected 8 Leads Parallel Connected
A+
A–
B+ B–
8
lead
motor
Orange
Org/Wht
Blk/Wht
Black
Red Red/
Wht Yel/
Wht
Yellow
Orange
Org/
Wht
Blk/Wht
Black
Red
Red/Wht
Yel/
Wht
Yel
low

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STRAC2 Hardware Manual
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3.3 Connecting the Inputs and Outputs
3.3.1 Step & Direction Inputs
The STRAC2 Step Drive has two high speed optically isolated inputs called STEP and DIR. They accept 5 to 24 volt single-ended or
differential signals, up to 2MHz. The maximum voltage that can be applied to the input is 28V.
The motor executes one step when the STEP input closes.
The direction of rotation is controlled by the DIR input state. A closed input (logic “0”) will result in clockwise rotation, and an open
input (logic “1”) will result in counterclockwise rotation.
STRAC2
STRAC2
STRAC2

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3.3.2 EN input
The EN input enables or disables the drive amplifier. It is an optically isolated input that accepts a 5 to 24 volt single-ended or
differential signal. The maximum voltage that can be applied to the input is 28V.
When EN input is closed, the driver amplifier is deactivated, all the MOSFETs will shut down, and the motor will be free. When EN input
is open, the drive is activated.
When the drive has encountered an error and the fault is removed from the system, a falling signal into the EN input will reset the error
status and activate the drive amplifier again.
STRAC2
STRAC2
STRAC2

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3.3.3 Fault Output
The FAULT Output is optically isolated. The maximum collector current is 100mA, and the maximum collector to emitter voltage is 30
volts. The output can be wired to sink or source current.
When drive is working normally, the output is open. When the drive encounters an error, the output closes.
STRAC2
STRAC2
STRAC2
STRAC2

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4 Switch Selection
Many of the operational parameters of the STRAC2 can be set or changed by position switches - either by a single switch or a
combination of ON/OFF settings of 2 or more switches.
SW1 SW2 SW3 SW4 SW5 SW6 SW7 SW8
Running Current Microstepping
SW9 SW10 SW11 SW12
Idle Current
Anti Resonance
Step Input Signal Filter
Self Test
Smoothing Filter
4.1 Microstep Resolution
The microstep resolution is set by the SW1, SW2, SW3 and SW4 switches. There are 16 settings
Microstep(steps/rev) SW1 SW2 SW3 SW4
200 ON ON ON ON
400 OFF ON ON ON
800 ON OFF ON ON
1600 OFF OFF ON ON
3200 ON ON OFF ON
6400 OFF ON OFF ON
12800 ON OFF OFF ON
25600 OFF OFF OFF ON
1000 ON ON ON OFF
2000 OFF ON ON OFF
4000 ON OFF ON OFF
5000 OFF OFF ON OFF
8000 ON ON OFF OFF
10000 OFF ON OFF OFF
20000 ON OFF OFF OFF
25000 OFF OFF OFF OFF
SW1
SW2
SW3
SW4
1234
1234 1234 1234 1234
1234 1234 1234 1234
1234 1234 1234 1234
1234 1234 1234 1234

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4.2 Running Current
The output current is set by the SW5, SW6 and SW7 switches. There are 8 settings.
NOTE: Drive’s running current will be limited by the lower value between motor selection rotary
switch or the dip current switch
Current (Peak) SW5 SW6 SW7
0.6A ON ON ON
0.8A OFF ON ON
1.0A ON OFF ON
1.2A OFF OFF ON
1.6A ON ON OFF
1.8A OFF ON OFF
2.0A ON OFF OFF
2.5A OFF OFF OFF
4.3 Idle Current
The running current of the STRAC2 drive is automatically reduced whenever the motor isn’t moving. The SW8 switches control the
percentage of the running current the idle current is reduced to. The 90% setting is useful when a high holding torque is required. To
minimize motor and drive heating it is highly recommended that the idle current reduction feature be set as low as the application can
tolerate.
Idle SW8
50% ON
90% OFF
4.4 Step Input Signal Filter
STRAC2 Drive selects the digital signal filter frequency by SW9. Setting switch to “OFF” will select high frequency 2MHz, and setting
switch to “ON” will select low frequency 150 KHz.
Note: The power must be cycled each time the position of SW9 is changed.
4.5 Anti Resonance
The SW10 switches select the load inertia. There are 2 settings. The inertia selection can help the STRAC2 drive to calculate the
current control parameter. If the load inertia is close to that of the motor rotor, the low setting should be selected. If the load inertia is
higher than that of the rotor, a proportionally higher setting should be selected.
Option SW10 Inertia
0 ON Low
High
1 OFF
SW5
SW6
SW7
567 5 6 7 8 5 6 7 8 5 6 7 8 5 6 7 8
5 6 7 8 5 6 7 8 5 6 7 8 5 6 7 8
0.6A 0.8A 1.0A 1.2A
1.6A 1.8A 2.0A 2.5A

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4.6 Step Smoothing Filter
Command signal smoothing can soften the effect of immediate changes in velocity and direction, making the motion of the motor less
jerky. An added advantage is that it can reduce the wear on mechanical components. SW11 selects this function - ON enables it, OFF
disables it.
This function can cause a small delay in following the control signal, and it should be used with that in mind.
Note: The power must be cycled each time the position of SW11 is changed.
4.7 Self Test
Setting SW12 to ON after the drive is powered up, will cause the drive to perform a Self Test move of 2 revolutions both CW and CCW
at .5 rps. Setting SW16 to OFF will disable this feature.
4.8 Step/Direction Mode and CW/CCW Mode Jumper
Most indexers and motion controllers provide motion commands in the “Step and Direction“ format. The Step signal pulses once for
each motor step and the direction signal commands direction. However, a few PLCs use a different type of command signal: one signal
pulses once for each desired step in the clockwise direction (called STEP CW), while a second signal pulses for counterclockwise
motion (STE[ CCW). The STRAC2 drives can accept this type of signal if you remove the drive cover and move jumper J10 from the
“1-2“ position to the “2-3” position CCW mode, the CW signal should be connected to the STEP input an DIR input.
1-2: Step & Direcion 2-3: Step CW & Step CCW

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5 Motor selection
Each position of the 16-bit rotary switch selects a different motor, and automatically sets the configuration parameters in the drive. The
STRAC2 drive comes programmed with up to 16 typical motors as factory defaults. Drives can be customized with specially selected
motors when required.
NOTE: Drive’s running current will be limited by the lower value between motor selection rotary
switch and the dip current switch
When the motor selection is changed, the drive power supply will need to be cycled.
BDC Position Motor Wiring Up-limit current
setting(A)
0 Reserved 0
1 Reserved 0
2 Reserved 0
3 Reserved 0
4 Reserved 0
5 Reserved 0
6 Reserved 0
7HT23-552 Series Connected 0.75
8HT23-553 Series Connected 0.75
9HT23-554 Series Connected 0.9
AHT34-495/695 Series Connected 2.5
BHT34-496/696 Series Connected 2.5
CHT34-497/697 Series Connected 2.5
DHT34-506C Series Connected 2.5
ECustom Motor 2.5
FCustom Motor 2.5

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5.1 Recommended motors
Model Number Connection Length Holding Torque Series Current Parallel Current Rotor Inertia
HT23-552 Series 1.71 84.4 0.71 1.41 0.0017
HT23-553 Series 2.17 167 0.71 1.41 0.00425
HT23-554 Series 3.05 255 0.71 1.41 0.0068
HT34-495/695 Series 3.11 555 2.15 4.3 0.0227
HT34-496/696 Series 4.63 1110 2.05 4.1 0.0453
HT34-497/697 Series 6.14 1694 2.55 5.1 0.068
HT34-506C Series 4.94 1260 2.8 5.6 0.0387
Note: The “Drive Current Setting” shown here differs from the rated current of each motor because the rated current is RMS and
the drive current setting is peak sine. If you are using a motor not listed here, for best results set the drive current at the motor’s rated
current x 1.2.
5.2 Torque-Speed Curves
0
50
100
150
200
250
0 10 20 30 40 50 60
HT23-552(oz.in) HT23-553(oz.in) HT23-554(oz.in)
HT23-552/553/554 (120V/220V)
Connec�on Series
Step Resolu�on 20,000 step/rev
0
200
400
600
800
1000
1200
0 10 20 30 40 50 60
HT34-495(oz.in) HT34-496(oz.in) HT34-497(oz.in) HT34-506C(oz.in)
HT34-495/696/697, HT34-506C (120V/220V)
Connec�on Series
Step Resolu�on 20,000 step/rev

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STRAC2 Hardware Manual
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6 Error Codes
The STRAC2 Drive has two LEDs to indicate status. When the motor is enabled the green LED flashes slowly, when the green LED is
solid the motor is disabled. If the red LED flashes, an error has occurred. Errors are indicated by combinations of red and green flashes
as shown below:
Code Error
Solid green Motor Disabled
Flashing green Motor Enabled
3 red, 1 green Over Temperature
3 red, 2 green Bad Internal Voltage
4 red, 1 green Supply Voltage High
4 red, 2 green Supply Voltage Low
5 red, 1 green Over Current
5 red, 2 green Excess Regen
6 red, 1 green Open Motor Phase

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7 Reference Materials
7.1 Mechanical Outline
141
Status
IN/OUTMOTORLINE
OUT -
OUT+
EN -
EN+
DIR -
DIR+
STEP -
STEP +
A+
A -
B+
B -
L
N
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
SW9
SW1 0
SW11
SW1 2
SW
STEP MOTOR DRIVE
Made in China
LED C o des
SOLI D GRE EN
GR - G R - GR
1GR + 4RD
1GR + 5RD
1GR + 6RD
2GR + 3RD
2GR + 4RD
1GR + 3RD
2GR + 5RD
GR=Gree n
RD=R ed
MO TOR DIS ABL ED
MO TOR ENABLED
SU PPLY VOLTAGE HIG H
OP EN MO TO R PHA SE
IN TER NAL VOLTAGE BAD
SU PPLY VOLTAGE LOW
OV ER CURRENT
OV ER TEMP ERATUR E
EX CESS REG EN
Mo tor S ele ct
A
A
B
B
+
-
+
-
L
N
SW1
SW2
SW3
SW4
SW5
SW6
SW7
SW8
SW9
SW10
SW11
SW12
+
-
STEP
STEP
DI R +
DIR -
EN +
EN -
OUT+
OU T -Microstep Table
MS TE P SW1 SW2 S W3 S W 4
200
400
800
16 00
32 00
64 00
12800
25600
10 00
20 00
40 00
50 00
80 00
10000
20000
25000
ON
ONON
ONON
OF F
ONON
ONON
ON O N
ONO FF
OF F
OF F
ON
ON
ON
OF F
ON
ON
ON O N
ONO FF
OF F
OF F
OF F
OF F
OF F
OF F
ON
ON
ON
OF F
ON
ON
ON O N
ONO FF
OF F
OF F
OF F
OF F
OF F
OF F
OF F
OF F
OF F
OF F
ON
OF F
ON O N
ONO FF
OF F
OF F
OF F
OF F
OF F
OF F
Cu r rent Table
Cu rr en t SW 5 S W6 SW 7
0. 4A
0. 8A
1. 2A
1. 5A
1. 8A
2. 0A
2. 2A
2. 5A
ON
ON
ON
OF F
ON
ON
ON O N
ONOF F
OF F
OF F
ON
OF F
ON O N
ONOF F
OF F
OF F
OF F
OF F
OF F
OF F
SW 12
ON
Se lf Tes t
OF F Di sa bl e
Enab le
Smoothing Filte rSW 11
ON
OF F Di sa bl e
Enab le
SW 8
Idle Curre nt
ON 50 % Cu rr en t
OF F 90% Cu rr en t
SW 9
ON
Step N oise Fi lt er
OF F 2M Hz
150K Hz
SW10
ON
Load I ne rt ia
OF F Hi gh
Low
Serial No Part No
AC i npu t vol tage be
in put voltag e
avoidin g damage !
must
.
sele cte d
by s wit ch Ch eck
befo re po wer o n
WARNING
SRAC
RoHS
110
Unit:mm
47.5
10.5
130.7
4.5
4.5

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7.2 Specifications
7.2.1 Electrical Specifications
Electrical Specications
Parameter Min. Typ. Max. Unit
Power Supply 90 -240 VAC
Output Current (Peak) 0.6 - 2.5 A
Step Frequency 2 - 2M Hz
STEP Minimum Pulse Width Hi and Low 250 - - ns
DIR Minimum Pulse Width 62.5 - - us
Under Voltage Protection - 75*/135* - VAC
Over Voltage Protection - 145*/295* - VAC
STEP/DIR Input Signal Voltage 4.0 - 28 V
OUT mxinmum output current - - 100 mA
OUT maximum voltage - - 30 V
* Note: when the input switch is on 115V status, under voltage protection point is 75VAC, over voltage
protection point is 145VAC.
When the input switch is on 230V status, under voltage protection point is 135VAC, over voltage
protection point is 295VAC.
7.2.2 Environmental Specifications
Environmental Specications
Heat Sinking Method Natural cooling or fan-forced cooling
Surrounding Air Conditions Avoid dust, oily mist and corrosive air
Operating Temperature 0 - 40°C (32 - 104°F)
Maximum Ambient Humidity 90% non-condensing
Shock 5.9m/s² maximum
Storage Temperature -10 - 70°C (14 - 158°F)
7.3 Matting Connectors
Part number Manuf. Desc.
2EDGK-7.62-02P-14-00A(H) DEGSON 2 pin power connector
2EDGK-5.08-04P-14-00A(H) DEGSON 4 pin motor connector
15EDGK-3.81-08P-14-00A(H) DEGSON 8 pin I/O connector

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STRAC2 Hardware Manual
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8 Contacting Applied Motion Products
404 Westridge Dr.
Watsonville, CA 95076, USA
1-800-525-1609
www.applied-motion.com