LAC-25 dual axis controller manual (346kB PDF).

SMAC
LAC-25 Technical Reference Manual
1. Introduction
The LAC-25 is a two axis stand-alone integrated controller / driver, with input / output (I/O)
capabilities, designed primarily for the control of DC brush type motors or actuators with itÕs
integrated driver, or other types or motors by interfacing the onboard analog output capabilities
with external drivers.
The LAC-25 implements a mnemonic type command instruction set via a standard RS-232
serial communications interface. These commands can be executed directly or used to create
command macros which are stored in the onboard nonvolatile RAM (NVRAM).
The LAC-25 can interface to the real world via the onboard motor drivers, 2 channels of
quadrature type encoder interface, 4 channels of optoisolated digital input and 4 channels of
optoisolated digital output, with additional optoisolated inputs serving for limit, home and fault
functions, 5 channels of 10-bit analog to digital (A/D) conversion (2 of which are reserved for
monitoring amplifier output current), and an RS-232 serial communications link. A proprietary RS-
422 interface is provided for future I/O expansion modules.
1.1 Specifications
Description
Operating Modes
Filter Algorithm
Max. Filter Update Rate
Trajectory Generator
Servo Position Feedback
Output (Standard)
PWM Frequency
Encoder And Index Input
Encoder Supply Voltage
Encoder Input Voltage
Encoder Count Rate
Position Range
Velocity Range
Acceleration Range
General Purpose Digital
I/O
Dedicated Digital Inputs
Analog Inputs
Analog Outputs
Communication Interface
Supply Voltage
Motor Voltage
Dimensions
Weight
Stand-Alone 2 Axis Servo Motor Controller / Driver
Position, Velocity, Torque and Electronic Gearing
PID
100 µS Per Enabled Axis
Trapezoidal, Electronic Gearing
Incremental Encoder with Index
PWM Motor Drive, 3 Amps Cont. and 6 Amps Peak at 50 VDC
Max.
Approximately 19.531 KHz
Single-ended or Differential
5 VDC
5.5 VDC Max., -0.1 VDC Min.
2 Million Quadrature Counts per Second
32 Bits
31 Bits
31 Bits
4 Optoisolated Inputs, 4 Optoisolated Outputs
Limit+, Limit-, Home and Fault for each axis
5 Channels With 10-Bit Resolution, 3 are user accessible
2 Channels With 12-Bit Resolution, ±10VDC.
RS-232 Serial Interface, Adjustable Baud Rate, 8 Bits, 1 Stop Bit,
No Parity, XON/XOFF Handshake
+18 To +50 VDC
+12 To +48 VDC
Approximately 7.6Ó Long by 3.3Ó Wide by 1.1Ó Thick
Approximately 1 Lb.
Table 1. Specifications.
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