PARKER P2 (01) PDF Document

The specifications for the PARKER P2 stepper drive are as follows:

• Supply Input: 12-24VDC

• Max Motor Output Current: 2.0Amps

• Differential input voltages up to ±14VDC (low/high input) Absolute MAX of ±14VDC

• Enable, Step & Direction input levels: <0.8V Low, >2V High

• Minimum STEP Pulse Width: 1.0µs

• Minimum STEP Pulse Low Time: 1.0µs

• Operating Temperature: 0 to 40°C with natural convection

• Relative Humidity: 5 to 95% non-condensing

• Vibration not to exceed 18G

The key features of the PARKER P2 include:

• Supply Voltage 12 to 24VDC

• 2 Amp chopper stepper driver

• ENABLE, STEP & DIRECTION inputs are 14V tolerant

• Adjustable Run Current and Standby Current with Potentiometers

• Adjustable Current up to 2.0Amps

• Differential and Single Ended inputs for the ENABLE, STEP & DIRECTION

• Din Rail Mountable (Optional)

• Resolutions of 200, 400, 800 & 3200 steps/rev (with 1.8° Step Motor)

• Small package (80mm x 25mm x 25mm)

• Automatically goes into standby current in 1.5 seconds after last Step signal goes low.

• Disable standby current by ending move with Step signal high.

The pinouts for the connectors on the PARKER P2 are:

X1 – Motor

1: A+

2: A-

3: B+

4: B-

X2 – Power

1: GND

2: 12-24VDC

X3 – Drive I/O

1: REF

2: DIR-

3: DIR+

4: ENABLE-

5: ENABLE+

6: STEP-

7: STEP+

8: GND

9: RESERVED

10: RESERVED

Yes, the motor output is NOT short circuit protected. Before enabling the PARKER P2 drive, verify that each phase of the motor is properly connected.

DIR: The state of the DIR input determines the direction of rotation of the motor. Any changes made to this input do not take effect until the next rising edge of the step command input signal.

ENABLE: A differential low enables the drive outputs. A differential high disables the drive outputs. Disconnecting the ENABLE signal also disables the outputs.

STEP: A low-to-high transition on the STEP input advances the motor one increment. With a high signal, the Standby mode is disabled.

REF: Current reference measurement can be taken from this pin.

GND: Logic ground.

The Drive I/O will accept differential or single-ended STEP, DIRECTION & ENABLE signals.

• To use single ended mode with an active high signal: connect STEP+, DIR+ & ENABLE- and leave STEP-, DIR- & ENABLE+ disconnected.

• To use single ended mode with an active low signal: connect STEP-, DIR- & ENABLE+ and leave STEP+, DIR+ & ENABLE- disconnected.

Other combinations of active low and active high can also be used.

With the cover off, set jumpers J1 & J2 to the proper position for the desired resolution. For example, to achieve a resolution of 3200 steps per revolution, place jumpers J1 & J2 on positions 1-2 for both jumpers.

The resolution settings are as follows:

To measure the Run Current REF voltage, you will need to remove the cover and place the voltage leads on the GND and REF pads. The measurement can also be taken from pin 1-REF and pin 8-GND on X3. With the STEP input NOT connected to X3, measure the Run Current and adjust the voltage using the Run Current Adjustment screw.

To measure the Standby Current REF voltage, connect the STEP+ input to GND. Adjust the voltage using the Standby Current Adjustment screw.

Half, Quarter, and Sixteenth Stepping Mode

Run Current Equation: REF = Motor Current RMS * 1.414 * 1.6

Standby Current Equation: REF = Motor Current RMS * 1.6 * %Decrease

Full Stepping Mode

Run Current Equation: REF = Motor Current RMS * 1.414 * 1.6

Standby Current Equation (Drive Limited to RMS): REF = Motor Current RMS * 1.6 * 1.414 * %Decrease