STM23 Drive
STM23 Drive

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.

  • Dynamic Current Control
  • Anti-Resonance
  • Torque Ripple Smoothing
  • Microstep Emulation
OUTPUT TORQUE:
  • STM23x-2 - to 125 oz-in
  • STM23x-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

Connections

  • 3 digital inputs
  • 1 digital output
  • 1 analog input

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


Specifications

POWER AMPLIFIER: All Models
AMPLIFIER TYPE Dual H-Bridge, 4 Quadrant
CURRENT CONTROL 4 state PWM at 20 kHz
OUTPUT TORQUE STM23x-2 Series - TO  125 OZ-IN WITH SUITABLE POWER SUPPLY
STM23x-3 Series - 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
AMBIENT TEMPERATURE 0 to 40°C (32 - 104°F) (mounted to suitable heatsink)
HUMIDITY 90% non-condensing
CONTROLLER: All Models
MICROSTEP RESOLUTION Software selectable from 200 to 51,200 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)
CONTROLLER: S Models
NON-VOLATILE STORAGE Configurations are saved in FLASH memory on-board the DSP
MODE OF OPERATION Step & Direction, CW/CCW, A/B Quadrature, Oscillator, Joystick, SCL, Hub
STEP AND DIRECTION INPUTS STEP +/-
Optically isolated, 5-24 Volt. Minimum pulse width = 250 ns. Maximum pulse frequency = 3 MHz
Function:  Step, CW Step, A Quadrature, Encoder Following, CW Limit, CW Jog, START/STOP (Oscillator mode)

DIR +/-
Optically isolated, 5-24 Volt. Minimum pulse width = 250 ns. Maximum pulse frequency = 3 MHz
Function:  DIR, CCW Step, B Quadrature, Encoder Following, CCW Limit, CCW Jog, Sensor, DIR (Oscillator mode)

Adjustable bandwidth digital noise rejection filter on all inputs
ENABLE INPUT EN +/-
Optically isolated, 5-24 Volt. Minimum pulse width = 250 ns. Maximum pulse frequency = 3 MHz
Function:  ENABLE, RESET, SPEED 1/SPEED 2 (Oscillator mode)
OUTPUT Optically isolated, 24V, 40mA MAX
Function: Fault, Motion, Tach.
ANALOG INPUT RANGE 0 to 5 VDC
ANALOG INPUT RESOLUTION 12 bits
COMMUNICATION INTERFACE RS-232 or RS-485
CONTROLLER: Q Models
INPUTS STEP +/-
Optically isolated, 5-24 Volt. Minimum pulse width = 250 ns. Maximum pulse frequency = 3 MHz
Function:  Step, CW Step, A Quadrature, Encoder Following, CW Limit, CW Jog, START/STOP (Oscillator mode), General Purpose Input

DIR +/-
Optically isolated, 5-24 Volt. Minimum pulse width = 250 ns. Maximum pulse frequency = 3 MHz
Function:  DIR, CCW Step, B Quadrature, Encoder Following, CCW Limit, CCW Jog, Sensor, DIR (Oscillator mode), General Purpose Input

EN +/-
Optically isolated, 5-24 Volt. Minimum pulse width = 250 ns. Maximum pulse frequency = 3 MHz
Function:  ENABLE, RESET, SPEED 1 /SPEED 2 (Oscillator mode), General Purpose Input

Adjustable bandwidth digital noise rejection filter on all inputs
OUTPUT Optically isolated, 24V, 40mA MAX
Function: Fault, Motion, Tach.
ANALOG INPUT RANGE 0 to 5 VDC
ANALOG INPUT RESOLUTION 12 bits
COMMUNICATION INTERFACE RS-232 or RS-485
APPROVALS: All Models
AGENCY APPROVALS RoHS
CE Certified
PHYSICAL: All Models
MASS STM23x-2xx = 1lb 14oz
STM23x-3xx = 2lb 10oz
ROTOR INERTIA STM23x-2xx = 1.42 oz-in2
STM23x-3xx = 2.51 oz-in2
OPERATING TEMP RANGE 20 to +50°C

Torque Curves

STM23 torque curve 2 STM23 torque curve 3

Software

ST Configurator screen 1
ST Configurator

Used for setup and configuration of the drive+motor.
(Runs on Windows Vista, XP, 2000, NT, ME, 98)



ST help
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 main screen
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.
(Runs on Windows Vista, XP, 2000, NT, ME, 98)


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