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The 3540M/MO step motor drivers are
microstepping drives with up to 12,800
steps per revolution, step phase sequencer
with MOSFET three state switching
amplifiers and optoisolated circuits. Both
drives include 5 optically isolated inputs, and
the 3540MO features external speed control,
tach output, and internal pots for accel/decel
rate along with high/low speed range
selection.
The 3540M drive includes an automatic
feature to lower motor current by 50%
anytime the motor is left at rest for more
than one second. This feature can be
disabled. Additionally there is a switch-
selectable self-test which rotates the
motor 1/2 revolution in each direction at
100 steps/second.
The amplifier regulates motor current by
chopping at a constant, inaudible frequency.
Phase current is selected from 32 levels by a
DIP switch. Microstepping resolution is
selectable by DIP switch on the 3540M.
SPECIFICATIONS
Amplifiers: Dual, bipolar MOSFET H-bridge, pulse width modulated three state switching at 20 KHz. 12 to 42 Vdc input. 0.4 to 3.5 A/phase output current, switch selectable in 0.1 A increments. 122 W maximum output power. Automatic idle current reduction (switch selectable), reduces current to 50% of setting after one second.
Inputs (3540M): Step, direction and enable, optically isolated, 5V logic. 5 mA/signal sink requirement. Motor steps on rising edge of step input. 0.5 µsec minimum pulse width. 2 µsec minimum set up time for direction signal.
Inputs (3540MO): Run/stop (cw limit), direction (ccw limit), high/low speed and enable inputs are optically isolated, 5 to 24V logic. 3 to 15 mA input current. 2200Ω input impedance. Can be configured for sinking or sourcing signals.
Recommended External Pot/Joystick Resistance: 1 to 5 K
Joystick Dead Zone: ±80 mV
Potentiometer/Analog Signal Dead Zone: 40 mV
Speed Ranges (3540MO):
Low Speed Range: 0 to 5 rev/sec
High Speed Range: 0 to 25 rev/sec
Accel/Decel Range: 1 to 250 rev/sec²
Tach Output (3540MO): Phototransistor, open collector, open emitter. 24V max, 20 mA max. 100 pulses per motor revolution, 50% duty cycle (square wave).
Physical: Mounted on 1/4 inch thick black anodized aluminum heat transfer chassis. 38.1 x 76.2 x 101.6 mm (1.5 x 3.0 x 4.0") overall. Power on red LED.
Maximum chassis temperature: 70°C (158°F).
Connectors (3540M): European style screw terminal blocks
Max Wire Size: 18 AWG
Motor: 4 position (A+, A-, B+, B-)
DC Input: 2 position (V+, V-)
Signal Input: 4 position (+5, STEP,
DIR, EN)
Connectors (3540MO): European style
screw terminal blocks
Power Supply and Motor: 6 position
Wire Size: 12 to 28 AWG
Signal Input: 10 position
Wire size: 16 to 28 AWG
Motor: 4 position (A+, A-, B+, B-)
Self Test (3540M): Switch selectable,
rotates motor 1/2 revolution each
direction at 100 steps/second, half-step
mode
Microstepping (3540M): Four switch selectable step resolutions with 1.8° motor. Half Step (400 steps/rev); 1/5 step (1000 s/r); 1/10 step (2000 s/r); 1/64 step (12,800 s/r)
Microstepping (3540MO): 1/64 step
(12,800 s/r) with 1.8° motor; pure sine
waveform
CE Mark: Complies with EN55011A and
EN50082-1(1992)
OPTIONAL ACCESSORIES
Power Supply (Required for Drive
Operation): Recommended: PS150A24
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† All dollar amounts on this site are shown in US currency.
Ordering Example: (1) 3540M Microstepping step motor drive = $220
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Keywords:Microstepping Motor Drives
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