STM23 Series Drive+Motor

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The STM Series is an integrated stepper drive+motor unit, fusing step motor and drive technologies into a single device, offering savings on space, wiring, and cost over conventional motor and drive solutions. The STM also fits with the ST product family of step motors and drives for a complete motion control system.

Drive+Motor+Control

Sophisticated Current Control
Anti-Resonance and Torque Ripple Smoothing
Microstep Emulation
Encoder Feedback Option

Downloads

STM23 Brochure (screen version)
STM23 Hardware Manual
ST Configurator™ software w/ built-in Help File
Q Programmer™ software

OUTPUT TORQUE:

STM23-2: To 125 oz-in
STM23-3: To 210 oz-in

PROTECTION:

Over-Voltage
Under-Voltage
Over-Temp
Motor Shorts
Motor Open Phase

Models

S - models Pulse & Direction CW/CCW Pulse A/B Quadrature Velocity (Oscillator) mode Host commands (SCL compatible) SiNet Hub compatible ST Configurator™ software for setup	Q - models Stand-alone Operation Q Programmer™ for complex motion Conditional Processing Math Functions Multi-tasking Register Manipulation Encoder Following “Generic” HMI compatibility
Connections 3 digital inputs 1 digital output 1 analog input	Connections 3 digital inputs 1 digital output 1 analog input

Specifications

POWER AMPLIFIER:
AMPLIFIER TYPE	Dual H-Bridge, 4 Quadrant
CURRENT CONTROL	4 state PWM at 20 Khz
OUTPUT TORQUE	STM23-2: To 125 oz-in with suitable power supply STM23-3: To 210 oz-in with suitable power supply
POWER SUPPLY	External 12 - 70 VDC Power Supply Required
INPUT VOLTAGE RANGE	12 - 70 VDC
PROTECTION	Over-Voltage, Under-voltage, Over-Temp, Motor/wiring shorts (Phase-to-Phase, Phase-to-Ground)
IDLE CURRENT REDUCTION	Reduction range of 0 – 90% of Running Current after delay selectable in milliseconds
OPERATING TEMPERATURE	-20 to 50°C (-4 to 122°F)
AMBIENT TEMPERATURE	0 to 40°C (32 to 104°F) (mounted to suitable heatsink)
HUMIDITY	90% non-condensing

CONTROLLER:
MICROSTEP RESOLUTION	Software selectable from 200 to 51200 steps/rev in increments of 2 steps/rev
ANTI-RESONANCE (Electronic Damping)	Raises the system damping ratio to eliminate midrange instability and allow stable operation throughout the speed range and improves settling time
TORQUE RIPPLE SMOOTHING	Allows for fine adjustment of phase current waveform harmonic content to reduce low-speed torque ripple in the range 0.25 to 1.5 rps
AUTO SETUP	Measures motor parameters and configures motor current control and anti-resonance gain settings
SELF TEST	Checks Internal & External Power supply voltages. Diagnoses open motor phases and motor resistance changes >40%. Detects encoder wiring and signal faults (differential encoder only)
MICROSTEP EMULATION	Performs high resolution stepping by synthesizing fine microsteps from coarse steps (Step & Direction Mode Only)
COMMAND SIGNAL SMOOTHING	Software configurable filtering reduces jerk and excitation of extraneous system resonances (Step & Direction Mode Only)
NON-VOLATILE STORAGE	Configurations are saved in FLASH memory on-board the DSP
MODE OF OPERATION	STM23S: Step & Direction, CW/CCW Pulse, A/B Quadrature Pulse, Velocity (Oscillator, Joystick), Streaming Commands (SCL), SiNet Hub Compatible. STM23Q: All STM23S modes of operation plus stored Q program execution.
DIGITAL INPUTS	Adjustable bandwidth digital noise rejection filter on all inputs. STEP+/- Optically Isolated, 5-24 Volt. Minimum pulse width = 250 ns. Maximum pulse frequency = 3MHz Function: Step, CW Step, A Quadrature, Encoder Following, CW Limit, CW Jog, Start/Stop (Oscillator mode), general purpose DIR+/- Optically Isolated, 5-24 Volt. Minimum pulse width = 250 ns. Maximum pulse frequency = 3 MHz Function: Direction, CCW Step, B Quadrature, Encoder Following, CCW Limit , CCW Jog, Direction (Oscillator mode), general purpose EN+/- Optically Isolated, 5-24 Volt. Minimum pulse width = 250 ns. Maximum pulse frequency = 3 MHz Function: Enable, Alarm Reset, Speed 1/Speed 2 (Oscillator), general purpose
DIGITAL OUTPUT	Optically Isolated, 24 V max, 40 mA max Function: Fault, Motion, Tach, general purpose
ANALOG INPUT RANGE	0 to 5 VDC
ANALOG INPUT RESOLUTION	12 bits
COMMUNICATION INTERFACE	STM23-A: RS-232 STM23-R: RS-485

APPROVALS:
AGENCY APPROVALS	RoHS Compliant CE Certified

PHYSICAL:
WEIGHT	STM23-2 = 1 lb, 14 oz STM23-3 = 2 lb, 10 oz
ROTOR INERTIA	STM23-2 = 1.42 oz-in² STM23-3 = 2.51 oz-in²

Torque Curves

Software

ST Configurator™
Used for setup and configuration of the drive+motor. For more information about the ST Configurator™ visit the Applied Motion Products Website.

(Runs on Windows Vista, XP, 2000, NT, ME, 98.)

Help Manuals
ST Configurator™ incorporates new on-line help menus. All the technical data, application information and advice on setting up the drive is now just a mouse click away.

(Runs in any web browser)

Q Programmer™
Q Programmer™ is used to create and edit stand-alone programs for Q version drives. The functions of these drives include multi-tasking, math, register manipulation, encoder following, and more.