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PDS SERIES DRIVE USER GUIDE
INTRODUCTION
Product
Description
The PDS series of single-axis packaged ministep drives consists of
the PDS13 & PDS15, with peak current ratings of 3A and 5A
respectively. A further 5A version, known as the PDS15-D is also
available with a built-in regenerative dump circuit. PDS series drives
are high-performance, MOSFET, chopper-regulated stepper drives
designed for optimum performance in low and medium power
applications. A recirculating chopper regulator improves operating
efficiency, minimizes power consumption, and reduces motor and
drive heating. They are powered Direct On-Line (DOL) from mains
supplies of 110V to 240V (nominal) AC. An internal switch mode
power supply is used, incorporating Power Factor Correction (PFC)
to minimise distortion of the AC supply.
The PDS series of drives have 4 selectable resolutions between 400
steps/rev and 4000 steps/rev, set using the front panel switches.
Motor short-circuit protection is assured across and between phases
and between any phase and earth. If a wiring fault occurs the drive
fault LED will be lit up - see Maintenance and Troubleshooting.
The drives are suitable for use with hybrid and permanent magnet
stepping motors having 4, 6, or 8 leads.
The drives can be used as stand alone units with separate control
inputs and motor connection/power inputs. An on-board clock can
be used to control drive motion or an external step direction source
can be used.
The step, direction and shutdown differential inputs are fully opto
isolated for maximum noise immunity.
The system may be configured to allow the clock signal to be
provided by the drive's internal clock source. Two separate
programmable speeds are available. These are set by front panel
pots marked “Fast” and “Slow”, a third pot allows adjustment of the
acceleration and deceleration times. The speed control
potentiometers may be mounted remotely via the front panel D-type
connector.
The internal clock source signal is brought out to the drive control
connector for monitoring purposes.
The drive and integral power supply are contained in one compact
enclosure, cooled by natural convection. Wall or panel vertical
mounting is recommended to allow access to the front panel
connectors and controls.
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