Rockwell Automation 1398-DDM-xxx ULTRA 100 Series Drives Installation Manual - Manual (Page 260)

Publication 1398-5.2 – PDF 1997
D-6 Creating Custom Motor Files
Table ID
The table ID value determines whether the motor file represents a
standard motor or a custom motor. A table ID in the range of 0 to
65534 identifies a standard motor file, and a table ID of 65535 (also
known as table ID “-1”) identifies a custom motor file. Users may
define motor parameters for multiple custom motors on a PC, but only
one custom motor files may be stored on the drive. (i.e., All custom
motor files have the table ID value of “-1”.)
Motor File
The motor file is the filename of the custom motor file, it is different
from the motor model text field. The filename can have up to 8
characters and must have a .MTR extension. If the motor model text
string is altered, ULTRA Master prompts the user for a new filename.
Synchronous/Induction
This field identifies whether the motor is a synchronous (permanent
magnet) motor or an induction motor. The motor type informs
ULTRA Master which fields are valid for a particular motor, and
which fields are invalid (grayed).
These instructions only cover permanent magnet motors, so the
Synchronous box must be checked.
Number of Poles
The number of poles specifies the number of electrical cycles in two
mechanical revolutions. For example, a 6-pole motor will have three
electrical cycles per mechanical cycle. The firmware can support only
2-, 4-, 6-, and 8-pole motors.
Occasionally a manufacturer specifies the number of pole pairs in a
motor data sheet. Pole pairs should not be confused with the number
of poles. A 6-pole motor has 3 pole pairs.
K
T
(Torque Constant)
The torque constant, also known as the torque sensitivity, specifies the
amount of torque that the motor can produce with a given value of
sinusoidal current. The torque constant is measured in units of N-m/
Amp, and its range is 0.0002 to 15.9998 N-m/Amp.
Conversion formulas between N-m/Amp, in-lb/Amp, and oz-in/Amp,
are:
Intro
1
Newton meter
Amp
8.85075
inch pound
Amp
141.612
ounce inch
Amp
⋅
=
⋅
=
⋅