5. PCT 6-Axis Stepper Driver: High Power Motion-Control Driver with Associated Encoder
Module
The PCT 6-AXIS High Power Drive uses “Step”, “DIR” & “Enable” to Control Bi-Polar, 2-phase Stepper Motors. On-Board Opto-Isolated GPIOs
can be used for Limit-Switch Inputs.
SPECIFICATIONS:
PCT 6-AXIS DRIVE: ‘6’ Axis High Power Motion Drive System:
* +24VDC to +48VDC Supply voltage
* Drives Bipolar Stepper Motors up to >14Amps/Motor, Peak Current
* > 200Khz Step Input Frequency
* 256 Micro Steps/Step
* Heart-Beat: Blue LED
* Altera CPLD can drive all Steppers Synchronously, as well as generate u-Steps.
* Power: GREEN LED
All I/Os are Galvanically/Optically Isolated.
* ‘12’ Opto-Isolated I/P's, for configuring Limit-Switches.
** Dimensions: 12.90” x 5.10”
Optional Encoder Module: (Stand-Alone)
* ‘8’ Independent 32bit Quadrature Decoders, for differential interfacing to Incremental Encoders
* ‘8’ Channel 16 Bit DAC: 10uSec O/P settling time: +/- 12V O/P
* ‘8’ Opto-Isolated I/Ps
* ‘8’ Opto-Isolated O/Ps
• ‘6’ Opto-Isolated Synchronized PWM Channels: High-Current (2.5Amps each) O/Ps
to drive TWO 3-Phase BLDCs. Real-Time Phase Current Monitoring available (optional).
* Dimensions: 5.00” x 4.30”

6. Multi-Channel Data-Acquisition & Control System (for Controlling a Multi-Spectral
Light Source)
Features:-
* u-Controller based, Closed Looped Control System for Precision Current Control for LEDs.
* Voltage Controlled Current Source Implementation.
* ‘4’ to ‘8’ Channels with Individual Channel Current Adjustment
* USB & RS232/RS485 Comm. Interface for Remote Control
* Precise Intensity Adjustment with <10 mA LED forward-current Resolution
* Real-Time LED-Forward Current Sensing & Closed Loop Control, via ADC Inputs
* Linear Current Source (O/P > 1.8Amps/Ch)
* Minimum Servo Loop rate > 5Khz per channel.
* PWM I/P Signals for Remote Control (External Modulation: 0 - 5 V)
* Available Customized Channels and Modulation Solutions
* Dimensions: 5.90” x 3.95” (‘4’ Channel Controller)
Applications
* Fluorescence Microscopy with Multi-wavelength Requirements
* Digital Pathology
* FRET (Precise Intensity control to minimize Photo-bleaching)
* Calcium Imaging
* Live Cell Imaging
This new ‘4’ to ‘8’-channel controller series is designed to drive up to ‘8 high-power LEDs. The LED current of
each channel can be adjusted independently from 0 to 2000 mA or modulated via an external voltage; for
details, see the 4 Operating Modes section below. These controllers are designed for microscopy and other
applications that require multiple color channels, with very Low variance & High repeatability in LED
Forward Current. They can drive multiple high brightness LEDs simultaneously.
The LED drivers can be remotely operated via USB 2.0 as well as by RS232/RS485; by the included software
package with an intuitive GUI and an extensive driver set. The GUI software, µManager, is a versatile, open
source, software platform for automated microscopy. A plugin allows the user to control the LED drivers right out
of the box.
Operating Modes
1. Constant Current Mode: The LED current is kept constant to a preset milliamp value. This mode is
ideal for general-purpose applications.
2. Brightness Mode: Controls the LED current but is set as a percentage of the maximum current. This is
optimal for general and fluorescence microscopy applications. The LED current in the Constant Current
and Brightness modes can be individually set for each LED.
3. External Control Mode: Allows the user to control the LED current for all connected LEDs by ‘4’ or ‘8’
independent external modulation inputs for each channel with a voltage of 0 to 5 V. The External Control
Mode may be used to modulate the LED current over time.
4. User Specific Operating Mode(s): TBD