2#L010185 June 2007
Introduction
The MBC10SI1 is an low cost single axis step motor driver integrated with a programmable simple indexer.
The MBC10SI1 microstep driver/pulse generator has an output current capability of 1.5A minimum to
10.0A maximum (peak rating). The MBC10SI1 driver operates with a DC voltage of 20VDC to 80VDC.
The MBC10SI1’s internal controller has two different programmable motion profiles. The MBC10SI1 also
has directional soft and hard limit switch inputs, a busy output and a complete output letting the user know
when an inded is finished. The MBC10SI1 driver features direction control and motor current On/Off
capabilities. The “Reduce Current Enabled” feature automatically reduces motor current to 50% of the set
value. The driver has built in features to indicate power on (green LED), running (yellow LED) and error
conditions (red LED). The MBC10SI1 has a fixed step resolution of 2000 steps/ revolution for a 1.8º
stepper motor. The bipolar drive configuration handles 4, 6, and 8 lead step motors and is also equipped
with over current protection. The MBC10SI1 communicates via USB communication. The easy to use
Windows software, SMPG-SMSI Software, is used to directly set up the two different motion profiles.
Motion Profiles and Running the Indexer
The programmable simple indexer has the ability to store two different motion profiles. The profiles include
a base speed (starting speed), a maximum speeds (running speed), acceleration/deceleration, the number
of steps (index) and a complete time (output signal). The base speed has a range of 1-5000 Hz, the
maximum speed has a range of 1 Hz-50 kHz, the acceleration/deceleration has a range of 100 to 9,999,999
steps/sec2, the index has a range of 0-8,388,607 steps and the complete time has a range of 1-1000
milliseconds.
There are “two ways” to get the unit to index: Examples are shown on the next page.
1) The first way is to directly control it from the computer with the software provided. Once the motion
profiles have been set, the unit is ready to index. From the software, the user can select which profile to
run and then click the begin index button. If a soft limit command is sent or a soft limit input is activated,
then the unit will immediately ramp down to base speed and continue running until the index has completed.
To stop all motion before the index has completed, a hard limit command needs to be sent or a hard limit
input must be activated.
2) The second way to make the unit run is to activate the individual index input. When an index input
is activated, it selects from memory the speed profile that was selected. If a soft limit input is activated,
then the unit will immediately ramp down to base speed and continue running until the index has completed.
To stop all motion before the index has completed a hard limit input must be activated.
Features
• Output Current of 10.0A Peak
• 2000 Steps/Revolution
• On-Board Programmable Simple Indexer with 2 motion profiles
• Pulses From 1Hz to 50kHz
• Directional Soft and Hard Limit Switch Inputs
• Complete Output
• Busy Output
• Motor On/Off Input and Automatic Current Reduction
• Short Circuit Protection