PMAC Quick Reference Guide Types of PMAC PMAC PC or PMAC VME Features PMAC PC Recommended for applications with more than four channel requirements in either a PC based or stand alone environment. More than four channels can be used for more than four motors operation, dual- feedback axis (two encoder input each) or commutated motors (two DACs each). For three or four channels applications, the PMAC Lite board is suggested instead. PMAC Lite The PMAC Lite is recommended for applications with three or four channel requirements in either a PC based or stand alone environment. The term Lite stands for the limitation of only one DSPGATE Gate- Array IC on board.
The number of channels can always be expanded from 4 to 12 through the use of an Acc-24P. The PMAC Lite board is provided also in a stand-alone box, the PMAC Pack , complete with power supplies and connectors. For one or two channels applications, the PMAC Mini board is suggested instead. PMAC VME With the same features as the PMAC PC, the PMAC VME is the only option for VME based applications. The PMAC VME can be ordered with either four or maybe eight axes (Option 1). The dual- ported RAM option in a PMAC VME is on-board. PMAC STD With the same features as the PMAC PC, the PMAC STD is the only option for STD based applications.
The dual-ported RAM option is not available for the PMAC STD and it is limited to eight channels, no Acc-24 is available for it.
2 Introduction Standard Features Motorola DSP 56k digital signal processor Linear and circular interpolation Four output digital-to-analog (DAC) converters 256 motion programs capacity Four full encoder channels Asynchronous PLC program capability 16 general purpose I/O, OPTO-22 compatible Rotating buffer for large programs Multiplexer port for expanded I/O 36-bit position range (+/- 64 billion counts) Overtravel limit, home, amplifier fault/enable flags 16-bit DAC output resolution Display port for LCD and VFD displays S-curve acceleration and deceleration Bus and/or RS-422 control Cubic trajectory calculations, splines Stand-alone operation Electronic gearing G-code command processing for CNC Advanced PID servo motion algorithms Optional Features Up to 16 digital-to-analog (DAC) converters outputs Yaskawa absolute encoders inputs Up to 16 full encoder channels Analog feedback inputs 8Kx16 dual-ported RAM MLDTs feedback inputs Flash memory (no battery) Parallel binary feedback 40, 60 or 80 MHz CPU Optically isolated encoder inputs Extended (pole-placement) servo algorithm RS-232 or RS-422 serial communication converters Super-high accuracy clock crystal ( Analog-to-digital converted inputs Voltage-to-frequency (V/F) converters On-board voltage to frequency converter 12-bit resolver-to-digital converter inputs Up to a total of 2048 multiplexed I/O points Sinusoidal encoder feedback inputs Up to 100 meters remote I/O operation