Carriage (Cr) Mechanism - Epson STYLUS 3000 Service Manual

Operating Principles
2.2.3 Carriage (
) Mechanism
The mechanism is composed of the
Position) sensor and
both right and left directions along the paper eject frame and
the motor enables the
home position by the
open loop. Table 2-2 and Table 2-3 show the specification for the
respectively.
Item
Motor type
Drive voltage
Coil resistance
Excitation mode
Drive frequency
Minimum step
Print Print speed
mode
Draft 400 cps
LQ 200 cps
SLQ 100 cps
2-4
unit, timing belt,
motor. The motor sends torque to the timing belt to move the
unit to move and stop at any position. The
sensor when the printer is turned on and its position is then controlled by the


Table 2-1.
4-phases / 200-pole / Hybrid type stepping motor
42 VDC 5% (The voltage applied to the driver)
5 7% (at 25 C per 1 phase)

Bipolar drive

2-2 phase, 1-2 phase,

Constant current drive
480 to 9600 Hz
0.202 mm (2-2 phase drive)
0.106 mm (1-2 phase drive)
0.053 mm ( 1-2 phase drive)
0.026 mm (2 1-2 phase drive)
0.013 mm (4 1-2 phase drive)
Table 2-2. CR Motor Drive Terms
Acceleration Acceleration
1
0.91
0.91
0.63
Figure 2-4. CR Mechanism
guide shaft, paper eject frame,
guide shaft. A stepping motor used for
motor and the
Motor Specification
Description
1-2, 2 1-2 phase, 4 1-2 phase
Constant
2
0.91 0.63
0.91 0.49
0.63 0.49
unit in the
is primarily detected at the
motor drive terms,
Deceleration Deceleration
1 2
0.91 0.91
0.63 0.63
0.63 0.63
(Home
Rev. A