Stepper Interface Module

ANALOG-TO-STEP

  • Single Channel analog input to step motor control converter.
    •
  • Synthesized quadrature encoder signals.
    •
  • Adjustable maximum step clock frequency rate.
    •

Specifications:

Ordering Information

Description:

Do you need to make a stepper motor follow an analog input command? Do you need to generate motion profiles by directing stepper motor motion using a joystick? Are you upgrading or retrofitting a CNC system which had stepper motors? 

The "ANALOG-TO-STEP" converter accepts an analog input signal and generates stepper motor clock and direction control output signals, and synthesizes quadrature feedback signals if the motor lacks an encoder. The converter may be used with any motion controller that generates analog servo control signals and accepts quadrature encoder input.

Two jumper-selectable input ranges are provided, +/- 10V and +/-20V. An 8-position DIP switch is used to set the analog servo motor command signal to the stepper motor CW/CCW (direction) and STEP (clock) signals.    The maximum stepping rate (the stepping clock rate when the input signal is at Full Scale) is user-selectable from 15Hz to 125kHz by configuring a DIP switch on the board.  (Vigilant can provide higher frequency ranges upon request.) Additionally, a digital input signal can enable/disable the stepper motor.

The standard product ships as a bare board with DIN mounts and standoff panel mounts, the version pictured has the optional circuit board housing enclosure. This enclosure also allows DIN rail mounting and panel mounting without standoffs.

The Joystick Input option provides the joystick connector and circuitry to convert standard 0 to +5V industrial joystick inputs; two channels are provided ( X and Y axes). Where both axes are needed, use one board with the Joystick Input as master and one standard board as slave.

 

Specifications:

Channels:

  • 1 channels.

Servo Control Inputs:

  • +/-10V or +/-20V analog speed,
  • TTL digital enable .

Stepper Control Outputs:

  • step: 15Hz to 125kHz max. DIP switch selectable for each channel, direction, enable.

Quadrature signals:

  • RS 422/485 synthesized encoder, one quadrature event per step. Jumper disable if motor has encoder.

Power:

  • external +5V supplied by user

Connectors:

J2

Power

P1 Joystick Option

1:

+5V Power

1: ++5V Power

2:

GND

2: N.C.

-

-

3: Joystick X

J1

User I/O

4:

GND

1:

Motor 1 Velocity

5:

GND

2:

ground return 1

6:

Joystick Y

3:

Quadrature A

7:

N.C.

4:

Quadrature /A

8:

++5V Power

5:

Quadrature B

9:

++5V Power

6:

Quadrature /B

10:

N.C.

7:

Enable Input

11:

N.C.

8:

GND dig ground

12:

GND

-

-

13:

N.C.

J3

Stepper Out

14:

N.C.

1:

Step Clock

15:

++5V Power

2:

Ground

   

3:

Step Dir

   

4:

Enable Out

   

Ordering Information:
  • AN2STEP  single-channel analog-to-stepper converter.
    •
  • AN2STEP-J  same as above, with joystick input option
  • AN2STEP-ENC  single-channel analog-to-stepper converter with enclosed housing
  • AN2STEP-JENC  same as above, with joystick input option

    •  

     

     
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