August 2012
L010199
3
General Description
The DPE25601 is a single-axis 2.5A bipolar microstep driver/controller, containing 2 Kbytes of
nonvolatile stored programming space, quadrature encoder feedback, and a 24W power supply,
all enclosed in a package. It provides flexible, independent control of bipolar stepper motors
with a current range from 0.5 to 2.5 amp/phase with a microstepping resolution of 1,600 steps
per revolution from a computer or any machine controller with a serial port. It is also capable
of standalone operation, making it an embedded machine controller. The easy to use Windows
software, SMC60WIN, can be used to directly control motion and to program the DPE25601.
The DPE25601 also has the ability for real time functions.
The DPE25601 has 40 commands, which are easy-to-remember for direct movement of the step-
per motor and communicates via either an RS232 or RS485 bidirectional serial data bus. Up to
99 DPE25601’s can be networked from one communications port on your PC or PLC, utilizing
the RS485 communications protocol. Special functions of the controller include 8 programmable
open collector outputs and 6 TTL, CMOS and 24V compatible inputs, a quadrature encoder input
with the ability to auto correct, an analog input to control either maximum speed or absolute posi-
tion, registration mark indexing during a slew command, an output that will trigger during an index
command at an absolute position, and a thumbwheel input for indexing a motor. The DPE25601
can be powered from 100-240 VAC, 50/60Hz.
Section 1:
Description
The driver in the DPE25601 (MBC25081) is a microstep motor driver that can drive motors rated
from 0.5 to 2.5 amps/phase. It can handle 4, 6 and 8-lead motors in a bipolar fashion. The
DPE25601’s driver features motor current ON/OFF capabilities and a Reduced Current Enabled
to automatically reduce motor current to 50% of the set value after the last step is made (20msec
delay).
The controller in the DPE25601 (PCL601) provides independent programming of acceleration/
deceleration, base speed (start up speed), max speed (running speed), jog speed, and the num-
ber of steps to be taken in both relative and absolute positioning modes. On absolute positioning
moves, the DPE25601 automatically determines the proper direction to go and the number of steps
to take. The relative positioning will move a number of steps in the direction that the user defines.
The DPE25601 also has specific functions such as
encoder feedback, auto correction, index-on-
the-fly and output-on-the-fly
. An analog input can be used to set either the maximum speed or go
to an absolute an absolute position based between the upper and lower programmable limits. A
seven decade thumbwheel switch can be read for relative indexing. The DPE25601 also has a
high level programming command set that includes: branching, looping, conditional statements,
time delays, text strings, and I/O which the user can use in the programming mode to fully control
all machine functionality. A home input, a set of bidirectional hard and soft limit switch inputs and
bidirectional jog inputs are provided for each axis. These features are generally required in most
machine control designs. 6 testable TTL, CMOS and 24V compatible inputs and 8 programmable
open-collector outputs are provided per axis. The I/O may be used for monitoring and control-
ling machine operation and/or interaxis coordination. The I/O are accessible independent of the
busy state of the axis controls. The DPE25601 has a built-in programmable reset circuit. Reset
is automatic on power-up, or by pressing the external reset button.
July 2018
