
HigH Performance
StePPer DriveS
witH ac Power SuPPly
STAC6 Series
l Current Output 0.5 to 6.0 A
l 90 to 135 Vac Input
l Configurator
Software
l Configurable Idle Current
Reduction
l External Control Options
l Pulse and Direction
l Analog Command Signal
l Host Command via RS232/485
l Fault Protection:
- Over-Voltage, Under-Voltage
- Over-Temp
- External Output Shorts
- Internal Amplifier Shorts
- Motor Regeneration
l Multi-Axis System with
SiNet
TM
l Stand-Alone Programming on
Si Model
l Microstepping Emulation:
Up to 51,200 Steps/Revolution
Advanced Features
l Auto Setup Measures Motor
Parameters and Configures
Tuning Parameters
l Self-Test Detects Encoder
and Determines Resolution;
Diagnoses Miswires and
Open Phases
l Torque Ripple Smoothing
Assures Smoother Motion
at Lower Speeds
l Comand Signal Smoothing
Assures Smooth Acceleration/
Deceleration Ramps
l Anti-Resonance Eliminates
Midrange Instability; Allows
Stable Operation to 50 rps
or Greater
Hub
TM
Configuration
STAC6-Si shown smaller
than actual size.
SPECIFICATIONS
POWER AMPLIFIER SECTION
Amplifier Type: MOSFET, dual
H-bridge, 4 quadrant
Current Control: 4 state PWM at 20 KHz
Output Current: 0.5 to 6.0 A in
0.01 A increments
Power Supply: Line operated
nominal 120 Vac, 50/60 Hz
DC Bus Voltage: Nominal 165 Vdc
AC Input Voltage: 94 to 135 Vac,
50/60 Hz
Protection: Over/under-voltage,
over-temp, external output shorts
(phase-to-phase, phase-to-ground),
internal amplifier shorts
Idle Current Reduction: Reduction to
any integral percent of full-current after
delay (selectable in milliseconds)
Motor Regeneration: Built-in
regeneration circuit (25 W max)
CONTROLLER SECTION
Non-Volatile Storage: Configurations
are stored in FLASH memory
AC
Power
Supply
Configuration
Software and
Programming
Cables
Included!
STAC6-S shown smaller
than actual size.
Step and Direction Inputs: Optically
Isolated: 5 to 12V; minimum pulse
width = 200 ns; maximum pulse
frequency = 2 MHz
Speed Range: Depends upon selected
resolution; amplifier is suitable for
speeds up to 133 rps
Resolution: Software selectable from
200 to 51,200 steps/rev in increments
of 1 step/rev
Encoder Option: Differential line
receivers suitable for 200 KHz or greater
Interface: RS232 and RS485 bus
Ambient Temperature: 0 to 55°C
(32 to 158°F)
Humidity: 90% non-condensing
INPUTS AND OUTPUTS
STAC6-S:
7 Digital Inputs: Two 5V, five 12 to 24V
3 Digital Outputs: 30V
2 Analog Inputs: ±10V
STAC6-Si:
15 Digital Inputs: Two 5V,
thirteen 12 to 24V
7 Digital Outputs: 30V
D-30

configuratortm—
configuration Software
The new CONFIGURATORTM software simplifies the
setup and configuration of the STAC6. Click on the icon
representing the aspect of the drive that needs changing
and an intuitive dialog box will open. Configuration data
for recommended motors is available from a drop down
menu. The Configurator also allows the user to create a
custom motor configuration.
Configuration
Software
Included!
The CONFIGURATOR
on-line help menu. All technical data,
application information and advice on setting
up the drive, now just a mouse click away.
TM
incorporates a new
D-31

drive #1
drive #2
drive #3
drive #4
Host
PC
or
PLC
Optical
Isolation
Optical
Isolation
OUT1
OUT2
OUT3
OUT4
IN1
IN2
IN3
IN4
252
(4.657)
60
(2.31)
187
(7.63)
Dimensions:
mm (inch)
acceSSorieS
The STAC6-Si is available with an optional
MMI operator interface. The MMI-01 is an
easy-to-use, NEMA 4/12 (IP56/52) terminal
with a 20 key membrane keypad and 4x20
character LCD display. Software for using the
MMI is contained in the Si Programmer itself,
and therefore all functions of the MMI come
with each Si drive. The MMI can be used to
display messages to an operator, wait for
an operator to press the ENTER key, allow
an operator to enter move distances, move
speeds, and loop counts, and much more.
Multi-Axis Systems
Connect up to 4 drives on a multi-axis
system using SiNet
Hub Programmer
your sequence of events, then download to
the hub for a stand-alone system or send
serial commands to the drives from a PC,
PLC, HMI, or other host controller.
TM
Hub 444. Use SiNet
TM
software to develop
Order
MMI-01
Separately. Visit
omega.com/
mmi-01
HUB 444
Separately. Visit
omega.com/
hub444
Real-Time
Communication
with Operator
Interface
MMI-01 shown
smaller than
actual size.
Order
HUB 444
for Multi-Axis
Systems
HUB 444 with DIN
rail mounting kit
shown smaller
than actual size.
D-32

OMBOB-1
shown smaller
than actual size.
OMBOB-1/OMBOB-2
Breakout Box for I/O Connector
l Break out DB-25 I/O Connector to
Screw Terminals
Great for
prototyping
systems!
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l Includes 1 m (3') Cable
l OMBOB-1: Compatible with all STAC6 Models
l OMBOB-2: Compatible with STAC6-Si
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Order
motors
separately,
see below
for details
0605040302010
To Order Visit omegamation.com/stac6 for Pricing and Details
MODEL NO. DESCRIPTION
STAC6-S High performance stepper drive complete with AC power supply
STAC6-Si High performance stepper drive with Si Programmer
STAC6-S-220V High performance stepper drive complete with 220 Vac power supply
STAC6-Si-220V
High performance stepper drive complete with 220 Vac power supply and Si programmer
* Software and download cable included.
Ordering Example: STAC6-S, high performance stepper drive with AC power supply.
TM
RECOMMENDED MOTORS
MODEL NO.
OMHT23-550 NEMA 23, 255 oz-in holding torque, shielded cable
OMHT34-488 NEMA 34, 650 oz-in holding torque, shielded cable
OMHT34-490 NEMA 34, 1845 oz-in holding torque, shielded cable
Ordering Example: OMHT34-488, high torque step motor with 650 oz-in holding torque.
Visit omega.com for additional stepper motor information.
DESCRIPTION
ACCESSORIES
MODEL NO. DESCRIPTION
OMBOB-1 Breakout box for I/O connector #1
OMBOB-2 Breakout box for I/O connector #2
Ordering Example: OMBOB-1, breakout box for I/O connector #1.
D-33