Microstep power boost switch - increases the drive current in
microstep mode at speeds above 500 Full Steps/sec. The rms
microstep current level while microstepping is 70% of the full
step rated current, the current boost feature boosts current by a
factor of 1.4 and brings winding current back to rated levels.
Status indicators - LEDs for operation and troubleshooting
information.
User-defined
functions
Mid-range instability control - eliminates loss of torque and
possible motor stalling when operating at mid-range speeds. This
instability is a phenomenon of the electronic, magnetic, and
mechanical characteristics of a stepping motor system. When
enabled, mid-range instability control damps mid-range
oscillations by advancing or delaying the switching of the output
transistors relative to the incoming pulse train.
Step size - sets the amount of rotation per step. The five settings
range from full step to fractions of a full step (microsteps). The
microstep settings range from 1/2 to 1/125 microsteps per step for
up to 25,000 steps/revolution with a standard 1.8
o
stepper motor.
Idle current reduction (ICR) - reduces motor winding current
by 50% during motor dwell periods. ICR begins one second after
the last input step pulse occurs.
Indexer
features
The indexer circuitry provides programmable motion control and
allows flexible interfacing to the application.
Pacific Scientific StepperBASIC - programming language with
over 100 instructions, combines the ease of the programming
language BASIC with sophisticated motion control features.
Serial port RS-232 or RS-422/485 communications -interfacing
the user computer or terminal for programming and/or computer
control. RS-422/485 control allows multiple 5345/5445 units to
be controlled from a single computer or terminal.
1 - 2
5345/5445 Installation and Hardware Manual
Rev F
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