Changes to the driver board – RMS Technologies IMDE17 INTEGRATED MOTOR + DRIVER + ENCODER User Manual
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RMS Technologies
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Version 1.04
IMD17/IMDE17
10/1/2007
Thank you for purchasing the IMD17 or the IMDE17 - Integrated Motor and R208 Driver.
This product is warranted to be free of manufacturing defects for one year from the date of
purchase.
Technical Support for RMS Technologies
By Telephone: 877-301-3609
(Mon.-Fri., 8:00 a.m.-5:00 p.m.)
On the Web:
www.rmsmotion.com
Via Email:
PLEASE READ BEFORE USING
Before you start, ensure that there is a suitable DC power supply. A current limited lab
supply is recommended for first time users to guard against the possibility of miswiring. In
addition, a suitable STEP and DIRECTION pulse source is also required.
DISCLAIMER
The information provided in this document is believed to be reliable. However, no
responsibility is assumed for any possible inaccuracies or omissions. Specifications are
subject to change without notice.
RMS Technologies reserves the right to make changes without further notice to any
products herein to improve reliability, function, or design. RMS Technologies does not
assume any liability arising out of the application or use of any product or circuit described
herein; neither does it convey any license under its patent rights, nor the rights of others.
CHANGES TO THE DRIVER BOARD
The IMD17/IMDE17 is an integrated Step Motor and R208 driver.
Prior to OCTOBER 1, 2005 the R208 driver board used slower opto-couplers, limiting the
step pulse timing. The old driver board also read step pulses on the rising edge. A revision
change was made on October 1, 2005, using more advanced opto-couplers. These new
opto-couplers can read faster data, yet they are also more sensitive to older PLC step
pulses. If your step pulse signal is not clear, the R208 will pick this up and the motor will
rotate “rough” and irratic. The new boards read step pulses on the falling edge. If the
falling edge of your step pulse is not a clear signal, the motor will rotate “rough” and irratic.
So far, only a small handful of customers have been affected by the change. Mostly those
that use PLC’s from the early 90’s and older. Customers can still request the old R208
boards in quantities of 100 per order (blanket releases are OK). The old boards are under
part number: R208-05.
Special Symbols
Indicates a WARNING and that this information could prevent injury,
loss of property, or even death (in extreme cases).