Geo PMAC Drive User Manual
2 Introduction
loop operation. Interface to the direct-PWM amplifier is through a standard 36-pin Mini-D style
cable. The drive performs no control functions but has protection features. Drive installation,
maintenance, and replacement are simplified because there is less wiring (position feedback and I/O
are not connected to the drive) and there are no variables to set or programs to install in the drive.
• Fully centralized control means that all gains and settings are made in the PMAC; no software
setup of drive is required
• No position feedback or axis flags required at the drive
Geo PMAC Drives
The Geo PMAC Drive is a standalone-capable integrated controller/amplifier with a built-in full
PMAC2 controller having stored-program capability. It can be operated standalone, or commanded
from a host computer through USB2.0 or 100 Mbps Ethernet ports. The controller has the full
software capabilities of a PMAC (see descriptions), with an internal fully-digital connection to the
advanced Geo power-stage , providing a convenient, compact, and cost-effective installation for one
and two-axis systems, with easy synchronization to other drives and controls.
• Choices for main feedback for each axis: A/B quadrature encoder, sinusoidal encoder with
EnDat
TM
or Hiperface
TM
, SSI encoder, resolver
• Secondary A/B quadrature encoder for each axis
• General-purpose isolated digital I/O: 8 in, 6 out at 24VDC
• 2 optional A/D converters 12- or 16-bit resolution
Motion Controller Standard Features:
• Motorola DSP 56k digital signal processor
• PMAC2 CPU
• Fully Configurable via USB2.0 and Ethernet TCP/IP
• Operation from a PC via setup software
• Stand-alone operation
• Linear and circular interpolation
• 256 motion programs capacity
• 64 asynchronous PLC program capability
• Rotating buffer for large programs
• 36-bit position range (± 64 billion counts)
• Adjustable S-curve acceleration and deceleration
• Cubic trajectory calculations, splines
• Set and change parameters in real time
• Torque, Velocity and Position control standard
• Full rated temperature cooling standard (no need for additional fans except small power models)
• Eight inputs @12-24V, fully-protected and isolated with separate commons for two banks of four.
• Six thermal-fuse protected outputs rated for 0.5A @, 24VDC each. (Flexible outputs allow for sinking
or sourcing of current depending on whether the common emitter or common collector is used.)
• On single axis drives: One primary encoder with TTL differential/single-ended inputs with A, B
quadrature channels and C index channel, 10 MHz cycle rate, or SSI feedback and Hall-effect inputs.
Plus one secondary encoder with TTL differential/single-ended input with A, B quadrature feedback
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