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MOONS’
MSSTAC6 Step Motor Drive User Manual
MOONS’
www.moons.com.cn
POWER AMPLIFIER SECTION: MSSTAC6-S-220, MSSTAC6-Q-220, MSSTAC6-I-220
AMPLIFIER TYPE
MOSFET , Dual H-Bridge, 4 Quadrant
CURRENT CONTROL
4 state PWM at 20 KHz
OUTPUT CURRENT
0.5 — 3.2 in 0.01 amp increments
POWER SUPPLY
Line operated nominal 120-240VAC, 50/60 Hz
DC BUS VOLTAGE
Nominal 330VDC (at 240VAC line input)
AC INPUT VOLTAGE
94—265VAC, 50/60Hz
PROTECTION
Over-voltage, under-voltage, over-temp, external output shorts
(phase to-phase, phase-to-ground), inter amplifier shorts
IDLE CURRENT
REDUCTION
Reduction to any integer percent of full-current after a delay
selectable in milliseconds
CONTROLLER SECTION:
NON-VOLATILE STORAGE
Configurations are saved in FLASH memory aboard the DSP
MODE OF OPERATION
Step & Direction, CW/CCW, Encoder Following, Joystick, SCL
STEP AND DIRECTION
INPUTS
Optically isolated, 5 Volt; Minimum pulse width = 200 ns.
Maximum pulse frequency = 2 MHz. Programmable digital
filter
SPEED RANGE
Depends upon selected resolution; amplifier is suitable for
speeds up to 133 rps
ANALOG INPUT RANGE
Software selectable: 0-5V, ±5V, 0-10V, ±10V
12 bits (with ±10V signal range)
11 bits (with 0-10V or ±5V signal range)
ANALOG INPUT
RESOLUTION
10 bits (with 0-5V signal range)
MICROSTEP RESOLUTION
Software selectable from 200 to 51200 steps/rev in
increments of 2 steps/rev
ANTI RESONANCE
Raises the system damping ratio to-0.3-0.5. eliminates
midrange instability and allows stable operation to 50 rps
WAVEFORM
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 tuning and
observer parameters
SELF TEST
Identifies the presence of an encoder and determines
resolution, diagnoses miswires and open phases
MICROSTEP EMULATION
Software selectable from 200 to 51200 steps/rev in 2
steps/rev increments.
DYNAMIC SMOOTHING
Software configurable filtering (4th order, elliptic) for use in
removing spectral components from the command sequence,
reduces jerk and excitation of extraneous system resonances
ENCODER OPTION
Employs encoder (hi or low resolution) to provide stall
detection, stall prevention and perform position verification
