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Ocean Controls
PO Box 2191
Seaford BC
Factory 3/24Wise Ave

Seaford,
Vic, Australia 3198
ABN 22 061 932 027

Ph 61 3 9782 5882
Fax 61 3 9782 5517

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Stepper Motor Controllers

KTA-193 Programmable Stepper Motor Controller
Based on the Serial Stepper Motor Controller, the introduction of a more powerful microcontroller has allowed us to produce a standalone 4 axis stepper motor controller which can be programmed via a PC using supplied software. Alternatively the card can be controlled via a PLC to free the PLC from complex stepper motor control routines. Up to 4 cards can be controlled from a PLC using the Modbus protocol.

Up to 120 instructions can be programmed into the controller for 1 motor, 80 instructions for 2, 60 instructions for 3 and 50 instructions for 4 motors. Instructions are saved in EEPROM and are retained through power loss. Just program once and then let it go.

Ideal for repetitive process tasks involving stepper motors, the unit provides 8 digital outputs which can be used as the direction and step signals. The outputs can also be used as general purpose digital outputs when not being used for motor control and the 4 digital inputs can be used for limit switches or program control.

Instructions include

  • Absolute Move
  • Relative Move
  • Move and Wait for Limit Switch
  • Wait x milliseconds
  • Digital Output On/Off
  • Set Max Stepping Rate
  • Set Start Stepping Rate
  • Set Step Increment
  • Set Motor Position
  • Wait for Input (Rising, High or Falling)
  • Jump to Instruction x
  • If Jump. If the input is present do the following instruction otherwise jump to line no xx
  • Jump to Start

The program can be instructed to run once, a number of times or continuously.

Finished Dimensions (mm): 78Wx88Lx25H

Download datasheet file

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KTA-190 PC Serial Port Stepper Motor Interface Card
NOV 06 - NOW MUCH FASTER - Up to 6.3kHz Stepping Rates
SEP 07 - SIMULTANEOUS MOTOR CONTROL ADDED
SEP08 - 2 RELAYS ADDED
Connects to the PC serial port and provides an easy to use interface for connecting and controlling stepper motors by your PC. You can connect up to four Leadshine Microstepping drives, KTA-191 Bipolar Chopper Drive, or KTA-179 Unipolar Stepper Motor Drivers to the card using their step and direction signals. You can multidrop up to 4 interface cards off the 1 RS232 serial line so you can control up to a total of 16 stepper motors.

You simply write ascii commands through the PC's serial port to the card to control each of the stepper motors. A free PC program (source code in VB is included) is provided so that you can execute a number of commands and repeat the process

Examples of the commands are

    @01 AMOV 1000 2000 n 4000  do an absolute move of stepper 1,2 and 4 to positions 1000, 2000 and 4000
    @01 AMOV 2000  do an absolute move of stepper 1 to position 2000
    @02 RMOV -400  do a relative move of stepper 2 400 steps backwards
    @03 POSN 10000   indicate stepper 3 is at position 1000
    @04 STOP  stop stepper 4
    @01 STAT   card sends the status of motors 1 to 4 whether they are moving or not and status of limit switches.


Please note these are not G-Code commands and it will not accept G-Code

Positions can be between -99999999 and 99999999 steps. Stepping rates are now up to 6300Hz, Amazing for such a low cost unit. The user can also set the acceleration and deceleration rates when starting and ending a sequence of steps. Limit switch inputs are available for each of the motors to prevent motors moving out of range.
Jan 06 -  Two new commands can turn on and off a direction signal on the board for a specified time. For example the user could control two stepper motors  for a telescope and using the commands switch on and off a relay for a specified time to operate a camera shutter.
Nov/Dec 06 - Faster Stepping rates, Alternate Acceleration Curve, Saving of parameters to EEPROM, Serial Response on completion of Move and XOR Checksum Options Added
Sep 07 - Simultaneous Motor Control Added - Control all four motors simultaneously, no more frustration of having one motor start moving before the other.
Sep 08 - Added 2 Relays to allow you to switch on and off lights, DC motors, valves etc

Finished Dimensions (mm): 78Wx92Lx25H

Download Software
Download Manual




Our free PC program vbSerialStepper (source code in VB is included) is now provided on CD so that you can execute a number of commands and repeat the process


KTA-192 Parallel Port Interface Card Kit
Our Parallel Port Relay card allows you to control stepper motor operations from your parallel port. It uses a 74HC245 buffer IC to provide protection for your PC’s parallel port and provide enough current drive for turning on and off opto-isolator inputs. Can be connected to our KTA-191, KTA-196 and KTA-179 stepper motor driver cards and our microstepping drives. Fitted with screw terminals it allows for 4 Clock signals, 4 Direction Signals and 4 Limit or Emergency Switches Terminals. Perfect for a 3 axis or 4 axis CNC machine. Pin outs are suitable for most desk top CNC packages. 
You can also use it in other applications for I/O control from your parallel port
Finished Dimensions (mm): 58Wx88Lx25H

Download Circuit Diagram

 

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KTA-205 Parallel Port Interface with Relays Card Kit
Our Parallel Port Relay card allows you to control stepper motor operations from your parallel port. It uses a 74HC245 buffer IC to provide protection for your PC’s parallel port and provide enough current drive for turning on and off opto-isolator inputs. Can be connected to our KTA-191, KTA-196 and KTA-179 stepper motor driver cards. The card provides 8 motor control output signals ( 4 Step signals, 4 Direction signals) to control up to 4 Stepper Motor Drivers, 4 digital inputs designed for use as limit switch inputs, 2 Relay Outputs to control spindles, coolant or vacuums, and 3 general IO which are connected directly to the port. The card is available with 12V or 24V relays and requires power at the relay voltage.  Fitted with screw terminals. Perfect for a 3 axis or 4 axis CNC machine.
You can also use it in other applications for I/O control from your parallel port
Finished Dimensions (mm): 58Wx88Lx25H

Download Manual
 

 


PURCHASING THE CONTROLLERS

All prices are in Australian Dollars. Prices do not include GST (Goods and Services Tax). 10% GST applies to goods delivered in Australia. Australian GST is not paid on shipments despatched to an international destination. You can check the exchange rate by going to http://www.x-rates.com

Item Description Quantity Price(AUD$)
KTA-193 Modbus Programmable Stepper Motor Controller Assembled $119.00
KTA-190 Serial Stepper Motor Controller Assembled $69.95
KTA-192 Parallel Port Interface card assembled $35.00
KTA-205 Parallel Port Interface card with 12V Relays assembled $45.00
KTB-205 Parallel Port Interface card with 24V Relays assembled $45.00





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