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STAC5 Hardware manual
920-0026 Rev. B
4/22/2011
Technical Specifications
AMPLIFIER TYPE
Digital MOSFET, dual H-bridge, 4 quadrant
CURRENT CONTROL
4 state PWM at 16 KHz
OUTPUT CURRENT
STAC5-120: 0.5-5.0 amps/phase (peak of sine) in 0.01 amp increments
STAC5-220: 0.5-2.55 amps/phase (peak of sine) in 0.01 amp increments
POWER SUPPLY
STAC5-120: 94-135 VAC, 50/60 Hz
STAC5-220: 94-245 VAC, 50/60 Hz
PROTECTION
Over-voltage, under-voltage, over-temp, motor/wiring shorts (phase-to-phase, phase-
to-ground), internal amplifier shorts
MOTOR INDUCTANCE
STAC5-120: 5-20 mH
STAC5-220: 20-60 mH
MOTOR REGENERATION Built-in regeneration circuit, 10 watts max.
IDLE CURRENT REDUC-
TION
Reduction range of 0-90% of running current after delay selectable in milliseconds
MICROSTEP RESOLU-
TION
Software selectable from 200 to 51200 steps/rev in increments of 2 steps/rev
MICROSTEP EMULATION
Performs high resolution stepping by synthesizing fine microsteps from coarse steps.
Reduces jerk and extraneous system resonances. (Step & direction mode only).
ANTI-RESONANCE
(Electronic Damping)
Raises the system damping ratio t0 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 of 0.25 to 1.5 rps.
COMMUNICATION IN-
TERFACE
Ethernet 100BASE-T, supports TCP and UDP
ENCODER INTERFACE
For connecting to motor-mounted encoder. Used to provide stall detection and stall
prevention with static position maintenance. Differential line receivers, up to 2 MHz.
INPUTS/OUTPUTS: S, Q
and IP models
X1, X2 inputs: Optically isolated, differential, 5-24 VDC logic (2.5V switching thresh-
old), minimum pulse width = 250 nsec, maximum pulse frequency = 2 MHz, 2 usec
minimum set up time for direction signal, maximum current = 10 mA.
X3, X4 inputs: Optically isolated, differential, 5-24 VDC logic (2.5V switching thresh-
old), 50 usec minimum pulse width, maximum current = 10 mA.
Y1, Y2 outputs: Optical darlington, sinking or sourcing, 30 VDC max, 100 mA max,
voltage drop = 1.2V max at 100 mA.
Analog input: Single-ended. Range is software selectable 0-5, +/-5, 0-10, or +/-10
VDC. Software configurable offset, deadband, and filtering. Resolution is 12 bits
(+/- 10 volt range), 11 bits (+/-5 or 0-10 volt range), or 10 bits (0-5 volt range). 100
kohms internal impedance.
