Start-Up
and
Adjustments
36
For example, the host mode operation
of
the BRU-Series drives can provide the following functions:
Save and load the entire personality module (INTEL Hex File Format).
Real-time read and write
of
the BRU-Series parameters including
PGAIN
, IGAIN,
SCALE,
and
OFFSET
.
Real-time diagnostic and status monitor.
Terminal mode for multiple axes from the host computer.
Real-time monitor
of
variables such as average current.
The above would
be
implemented with the user's host software. The host mode of the BRU-Series drive
simply provides a communication protocol (or language) that makes it easy for the host computer
to
communicate with the BRU-Series drive.
The host mode interface provides a very powerful and flexible communication protocol for use
by
a host
computer. This implies that users will provide the necessary host software
to
perform the application
functi
on.
The host mode operation
of
BRU-Series drives is an option that is not necessary for every
application as it will require software
to
be
created
for
the host computer. The host mode communication
protocol
is
available as a separate document and can be obtained directly from Reliance Motion control
and their authorized sales personnel.
5.3 Tuning Procedure
The BRU-Series drive has been designed
to
provide adequate tuning
for
many applications, that
is,
all
of
the necessary tuning information is contained in the personality module. However,
for
some applications
some additional adjustments may
be
required. Two tuning modes have been
in
cluded in the BRU-Series
drive
to
help in tuning the system. The first is the auto-tune mode which consists of a ·self-tuning•
algorithm. Auto-tune mode
is
designed for applications that require near-optimal performance. To optimize
the BRU-Series drive tuning for a specific application, the tune mode can
be
used. All tuning and
adjustments are accomplished via the serial interface (refer
to
Section 5.2.3.2.3).
5.3.1
Using Auto-Tune Mode
Auto-tune provides a method for tuning the servo drive connected
to
a machine without any special
equipment other than the user terminal. Upon enabling the BRU-Series drive in auto-tune mode, the servo
system will move in a rapid back-and-forth motion for 5 seconds and then halt.
WARNING
DO NOT ATTEMPT TO USE AUTO-TUNE WITH SYSTEMS WHICH
HAVE GRAVITATIONAL AFFECTS. THE BRU-500 AND BRU-200
WILL NOT ATTEMPT TO HOLD INITIAL POSITION.
BRU-200/BRU-500 Brushless Drives Instruction Manual
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