Vista Sensors and Motors.pdf - 第28页
SENSORS AND MOTORS MOTORS 20.28 Technical Reference Manual Chapter Issue 1 Sep 02 Motor Comp arison Stepper Servo DC Motor Features Good for positi on or speed c ontrol o f high precisio n but unsu itable for high s peed…
SENSORS AND MOTORS
MOTORS
Chapter Issue 1 Sep 02 Technical Reference Manual 20.27
Figure 20-27 DC Motor Schematic
Machine Controller
I/O Breakout Board
C
Transport Belts
USC Paper Feed
NOTE
The CAN Bus forms part of the 100 way connection
between the Machine PC and Controller enclosures
DC Motors
M
16 I/Ps, O/Ps
Multi-
Move
CAN Bus
X12
Host
Comms
Parallel
Printer
PCI Bus
ISA Bus
Machine PC
P.S.U.
HDD
Keyboard
Touchscreen
Camera
24v (U/S)
PCI 3
Vision
Card
Vision
P. C.
Adaptor
ISA 5
CDROM
FDD
P
r
o
c
e
s
s
o
r
ISA 3
Mouse
Lighting
Monitor
ISA 10
N
e
x
t
m
o
v
e
SENSORS AND MOTORS
MOTORS
20.28 Technical Reference Manual Chapter Issue 1 Sep 02
Motor Comparison
Stepper Servo DC Motor
Features Good for position or
speed control of high
precision but unsuitable
for high speed or high
torque control
Enables positioning and
speed control at higher
torque
Fairly constant speed
rotation
Stability Stable Control must feature
some kind of damping
Unstable.
Unsuitable for precision
speed control as loading
slows down motor
Motor Simple 8 wire (4 phase)
stepper
More complicated (inte-
gral encoder) /expen-
sive
Simple moving coil
motor
SENSORS AND MOTORS
MOTOR TYPES
Chapter Issue 1 Sep 02 Technical Reference Manual 20.29
MOTOR TYPES Each of the following figures details a particular motor in the machine and is
accompanied by an image for visual identification.
Servo Motors
Figure 20-28 DC Servo Motors
Rising Table
Camera Y
Camera X
PRINT CARRIAGE
DC Servo motor
Gearbox : None
Pulley : 40T (5mm Pitch)
Gearbox : None
Pulley : 22AT (5mm Pitch)
Gearbox 5 : 1
Pulley : 11AT (10mm Pitch)
Gearbox 50 : 1
Pulley : 30T (5mm Pitch)