The TM4500
driver is a low cost, unipolar step motor driver designed
for 4 phase step motors. The TM4500 is a track mount driver,
meaning that it can be quickly mounted on easy to use
snaptrack (sold separately). The TM4500 allows the option of
using full-step or half-step operation, giving the user the
ability to step in either 1.8° or 0.9° increments. The
driver can be powered by an AC or DC voltage. For AC
operation, the driver may be purchased with a recommended
step down transformer. A single transformer may be used to
power up several drivers based on power consumption. A major
advantage that the TM4500 has over chopper drivers, is that
the TM4500 is designed to use bilevel technology. This means
that it has replaced the need for high frequency switching
techniques, consequently it does not create the EMI, RFI,
and motor heating problems that are associated with chopper
drivers. This technique makes the TM4500 suitable for
applications where low noise requirements are a must. It is
especially useful for medical equipment, test instruments,
positioning systems, and any other application where noise
may be a problem.