1. General
The P808 is a high performance microstepping driver based on the most advanced technology in the world
today. It is suitable for driving any 2-phase and 4-phase hybrid step motors (current 7.7A). By using
advanced bipolar constant-current chopping techniques, it can output more speed and power from the same
motor, compared with traditional technologies such as L/R drivers. It has patented current control
technology, which allows coil currents to be accurately controlled, generating much less current ripple and
motor heating than other drivers on the market.
Features of this driver
z High performance at low cost
z Supply voltage to +90VDC, current to 7.7A for P808
z Inaudible 20khz chopping frequency
z TTL compatible and optically isolated input signals
z Automatic idle-current reduction
z Mixed-decay current control for less motor heating
z 14 selectable step resolutions in decimal and binary
z Microstep resolutions up to 51,200 steps/rev
z Suitable for 4, 6 or 8 lead motors
z Over-current, over-voltage and short-circuit protection
z Small size
Applications of this driver
Suitable for a wide range of stepping motors of size NEMA 17, 23, 34 and 42, usable for various kinds of
machines, such as X-Y tables, labelling machines, laser cutters, engraving machines, and pick-place devices;
particularly useful in applications with low noise, low vibration, high speed and high precision
requirements.
2. Specifications and Operating Environment
Electrical Specifications (T
=
25℃)
P808
Parameters
Min Typical Max Remark
Peak Output Current 2.8A by user 7.7A By DIP switch
Supply voltage (DC) +24V +68V +90V
Logic signal current 6mA 10mA 30mA
Pulse input frequency 0 By user 300Khz
Isolation resistance 500MΩ
Astrosyn International Technology Ltd, The Old Courthouse, New Rd Ave, Chatham, Kent ME4 6BE, England
Tel: +44(0)1634 815175 Fax: +44(0)1634 826552
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