The STM is a drive + motor + control unit,
fusing step motor, drive, and controller
technologies into a single device, offering
savings on space, wiring and cost over
conventional motor and drive solutions.
The "S" models offer control options such
as step and direction, analog input, joystick
control, and host commands using the
Si Command Language (SCL).
SCL allows for control via serial commands sent from a host device such as a PC or PLC. This permits the user to perform a variety of motion, I/O, and system
status tasks in real time via a host serial device.
For Torque/Speed Curves, Click On "Manuals" Above
The"Q" and "IP" models add the capability of stand-alone
programmable operation using the
"Q" text-based programming language. This
language offers high-level features such as
multi-tasking, conditional programming,
math functions, register access, and much
more. All of the STM models offer RS232
and RS485 versions, as well as the option
of a 1000-line encoder that is integrated
into the motor housing. The encoder option
provides stall detection and prevention;
the controller senses rotor lag and reduces
speed to avoid stalling. Models are available
with 85 oz-in up to 340 oz-in torque. STM23 models also
offer Ethernet and Ethernet/IP versions.
New! STM17 & STM24 models
(see ordering table below)
ADVANCED FEATURES Auto Set-Up:
At start-up the drive measures motor
parameters, including the resistance and
inductance, then uses this information to
optimize the system performance.
At power-up the drive diagnoses
mis-wires and detects any open or
shorted motor phases.
Torque Ripple Smoothing:
The drive smoothes the low-speed
torque ripple which is inherent in all
step motor systems.
Command Signal Smoothing:
Command Signal Smoothing can soften the
effect of immediate changes in velocity and
direction, making the motion of the motor
Step motor systems resonate at certain
speeds. The STM drive + motor
automatically calculates the system’s
natural frequency and applies damping
to the control algorithm.
The ELC-PH12NNDT model PLC provides high-speed pulse outputs which can be used to drive
any of Omega's step & direction stepper drives. The ELCSoft ladder logic
software has built-in step motor functions which make programming
your motion control application easy. The STM23S-2AN is an integrated stepper
drive + stepper motor which accepts pulses from a PLC. Add the ELCSoft
programming software, ELC-CBPCELC1 programming cable, and OMPS150A24
power supply for a complete motion-control system that costs less than $1000.
Protect your power supply from motor
regeneration with the OMRC-050 regen clamp... see "Specs"
above for details.
† All prices on this site are shown in Taiwan Dollars. Note: Power supply is required (sold separately). Comes complete with software and download cable. Ordering Example: (1) OMPS150A24 24 Vdc power supply, TWD4,500 plus (1) STM23S-2AE Integrated stepper drive/motor with 125 oz-in holding torque and RS232 interface plus 1000-line encoder, TWD20,775, TWD4,500 + 20,775 = TWD25,275
STM17 Series - Integrated Step Motor and Drive Hardware Manual
STM23 Series - Integrated Step Motor and Drive Hardware Manual
STM24 Series - Integrated Step Motor and Drive Hardware Manual
STM Series - Si Command Language (SCL) manual