Specifications

20 Gear Drive, Plymouth Ind. Park, Terryville, CT 06786
Tel: [phone] Fax: [phone] http://www.amci.com
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CHAPTER 2
SPECIFICATIONS
Drive Type
Two bipolar MOSFET H-bridges with 170V
output bus. 20KHz PWM current control.
Internal 25 watt regeneration resistor.
Weight
4.3 lbs. (2.0 kg.)
Inputs
Electrical Characteristics for all Inputs: .......
Differential. 1500 Vac/dc opto-isolated. Can
be wired as single ended inputs.
Step ...... Motor steps on high going pulse.
200nS min. pulse width, 2 MHz max-
imum input frequency.
Disable . Active high. Disables current to
motor. Drive does not accept steps
while disabled.
Reset .... Active high. Resets the drive after a
fault condition. Also forces drive to
update latched switch settings.
Fault Output
Electrical Characteristics:..............................
Open Collector/Emitter. 1500 Vac/dc opto-
isolated. 30Vdc, 20 mA max.
The Fault Output is normally on. Turns off
under the following conditions:
Disable/Reset The Disable or Reset input is
active, or drive initialization is
not complete.
Short Circuit . Motor Phase to Phase or Phase
to Ground
Over Temp .... Heat Sink temperature exceeds
95° C (200° F)
No Motor ...... The motor interlock terminals
are not connected.
Over Voltage . The voltage on the output bus
exceeded 250 Volts
Pulse Train Input
Switch selectable to CW/CCW or Pulse/Direc-
tion.
Anti-Resonance Circuit
Circuit that automatically dampens mid-fre-
quency system resonance. Switch selectable
enable/disable.
Anti-Resonance Phase
When anti-resonances enabled, this feature
adapts the circuit to your torque/inertia ratio.
Motor Current Control
Switch selectable to RMS or Peak current
Motor Current
Switch selectable from 0.1 to 6.3A
RMS/PK
in
0.1 Amp steps.
Idle Current Reduction
Switch selectable to Not reduced, To 50%, and
To 0%. Motor current is reduced to selected
level if a step pulse is not received for one
second. Current restored to full value on
next pulse.
Resolution
Switch selectable to one of sixteen resolutions
ranging from 200 to 50,800 steps per turn.
Output Waveform
Switch selectable to allow the shaping of the
microstep waveform for optimal smooth-
ness and resolution. Pure Sine, -4%, -6%
and -10% of 3rd harmonic waveforms are
available.
Current Loop Gain
Four switch selectable settings adjusts the drive
to your motor’s inductance value.
Internal Power Fuses
10 Amp Slow Blow. Both Line and Neutral are
fused.
Environmental Specifications
Input Power ......... 95 to 132Vac, 50/60 Hz,
9.5 A
PK
max.
Drive will retain control of motor down to
85Vac at reduced torque.
Operating Temp .. 32° to 122°F
(0° to 50°C)
Storage Temp ...... -40° to 185°F
(-40° to 85°C)
Humidity ............. 0 to 95%, non-condensing
Motor Specifications
Type ............ 2 phase hybrid. 4, 6, or 8 lead
motor
Insulation ... Minimum 500Vdc phase-to-
phase and phase-to-case
Inductance .. 1 mH minimum. 2.5 to 45 mH
recommended