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Features:

• AC input 110V or 220V switch selectable, 50-60 Hz

• DC bus voltage 35 VDC full load, 40 VDC nominal

• Switch selectable motor current from 0.4–3.5 amps/phase

• Microstepping:

• Pulse and Direction mode: switch selectable 200 to 50,800 steps/rev

• Oscillator/Joystick mode: 12,800 steps/rev

• Switch selectable idle current reduction, 0 or 50%

• Optically isolated inputs/outputs

• Speed, Enable: optically isolated, differential 5 – 24 V logic

• Step, Direction: optically isolated, differential 5 – 12 V logic

• Wiper: 0–5 VDC analog signal

• Tach output: isolated phototransistor. Tach out- put is 100 pulses per motor revolution, 50% duty cycle.

• Internal Pot:

• Low speed 0–5 rps

• High speed 0–25 rps

• Accel/decel 1–250 rev/sec/sec

• External Speed, Pot or Joystick 3 terminal type, 1k–10k ohms

• Self test, switch selectable

• 140 watts of usable power

• Screw terminal connectors

• Dual, MOSFET H-bridge, 3 state, pulse width modulated amplifier switching at 20–30 KHz

• Ideal for 4, 6 or 8 leaded step motors NEMA sizes 11, 14, 17 and 23

• CE and TUV compliant

Description

The PDO 3540 is a stepper drive packaged in a rugged steel case painted black with white epoxy silkscreen. Integral heat sink, mounting brackets, switch covers and connectors are included with each drive. The drive has been matched with twelve recommended NEMA 11, 14, 17 & 23 motors in order to create a complete stepper motion solution.

The PDO 3540 provides the user with four modes of operation to choose from, Self test, Pulse & Direction, Joystick or Oscillator. The specific operation mode desired is selected during set up via DIP switch. DIP switches are also provided for setting the drive' s step resolution as well as the motor current.

Self Test Mode is used for troubleshooting. If you are unsure about the motor or signal connections to the drive you can use the self-test.

Pulse & Direction Mode allows the PDO 3540 to receive step pulses from an indexer such as the Applied Motion' s Si-100 or Si-1 or from a PLC or any other external controller.

Joystick Mode allows speed and direction to be determined by an external analog voltage. STEP and DIR inputs can be used for limit switches. SPEED input selects speed range. LO SPEED and HI SPEED pots adjust the 2 speed ranges.

Oscillator Mode can control speed by onboard potentiometers and/or by an external analog voltage. STEP input starts and stops the motor. DIR input controls direction of rotation. SPEED input selects the speed range.

The PDO 3540 also provides a Tach Output and Enable Input.

A Tach Out signal is provided for measuring the motor speed. It generates 100 pulses per revolution. If connected to a frequency counter, speed reads out in revs/second with two decimal places.

ENABLE allows the user to turn off the current to the motor by setting this signal to logic 0. The logic circuitry continues to operate, the drive "remembers" the step position even when the amplifier is disabled.

Factory set to operate at 110-volt input; the PDO 3540 can be reset by the user to operate at 220-volt input by a simple switch selection.

Pluggable screw terminal blocks are provided for the motor, AC input and 8-position signal input/output. Mating connectors are provided with the drive.

The PDO 3540 is both CE and TUV compliant.