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Discription:
The ST Stepper Motor Control Board Series is designed for multi stepper motor control through a PC or terminal.
The boards come with drivers for 4 (ST4) simultaneous steppers. The boards also provide analog and digital inputs,
interrupt inputs and a PWM signal output. Interface to a PC can be done via an RS232 or RS485 used in conjunction
with the RMV I/O-485 Board.
The latter can be configured in an up to 32-board network and therefore up to 128
steppers can be sequentially or simultaneously controlled from one PC serial port. An RMV RS232/RS485 converter
makes the network transparent to an ordinary PC serial port.
Features:
| Control |
Control of 4 stepper motors independently. Multiple
boards in a network may be controlled through RMV I/O-485 board
to a total of 128 stepper motors. |
| Driver V & amp |
All the stepper motors are driven by an L298,
which is a high voltage, high current dual full-bridge driver.
It can handle a 2 Amp current. The power supply for motors can
be up to 48V. For more powerful stepper motors, a simple H-Bridge
driver circuit can be added. |
Velocity changes
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Acceleration and deceleration modes are supported. |
PWM
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One 10 - 10000 Hz, 0 - 100 % duty cycle Pulse Width Modulation channel. |
Stop Pins
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Hardware stop pins are available for left and right limits or Home buttons. |
Analog to digital converters
|
The ST4 board supports 10 analog to digital conversion channels. The
resolution of the conversion depends on the ADC used. The ST-boards are available with either
a 10 or 12 bit AD Converter. |
Interrupt lines
|
10 High and Low interrupt lines. |
TTL compatible I/O lines
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8 TTL compatible I/O lines. |
Control of up to 32 boards
|
The ST4 can be controlled directly via a standard serial port (from 300 to
115200 Bauds), or attached to our I/O-485 stations. The latter configuration allows the user
to control up to 32 ST4 boards from the same serial port, with synchronic triggering of all
motors if required |
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| Number of Controllable Motors |
Analog to Digital Resolution |
ST-Board |
| 4 |
10 |
ST4-10 |
| 4 |
12 |
ST4-12 |
Technical Specifications:
| Serial Interface: |
All data and commands are handled through serial interface (8,N,1).
Communication rates from 300 to 115,200 baud. |
| Analog I/O |
Input impedance of measured circuit: 10K ohms
11 channels (10 brought out to terminal strip pads) 0-5 VDC regulable, single ended.
Sample rates to 1250 sps transferred to the computer (8 bit) at 115,2000 baud. |
Digital I/O
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8 I/O TTL compatible pins organized in 1 port (PA) can be configured as INPUT
or OUTPUT on a pin by pin basis. Direct read back of all digital outputs. |
Pulse Width Modulation
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10-10,000 pps, 0-100% duty cycle in 1% steps. |
Stepper Motor Control
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Step rates from 10 to 3,300 steps/sec Monophasic/Biphasic and Half step
operation. |
Power Supply
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The ST board contains a 7805 regulator capable of supplying up to 1 Amp at
5VDC that can be used to power external circuitry. A 6.5 – 9V, 500 mA adapter is recommended. |
PC communication
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A DB9 connector on the ST board can be linked to the serial port of a computer
or terminal. |
Dynamic Library
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Dynamic Link Library in 16 and 32 bit versions. |
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