2.2.2 Carriage Drive Mechanism
The timing belt attached to the base of the carriage unit is driven by the carriage motor, causing the
carriage unit to move along the carriage guide shaft left to right, or vice versa. The carriage drive
motor on this printer is a 4-phase, 200-pole, hybrid-type stepping motor mechanism, allowing the
printer to stop the carriage or change the carriage movement at any position. The position of the
carriage is recognized by the home position sensor, and position information is fed back to the
carriage drive control circuit. This carriage motor is driven by the motor driver IC SLA7041 (see
Section 2.3.2.3 for more information).
Table 2-1. Carriage Drive Motor Specifications
Item
Description
Motor Type
4-phase / 200-pole hybrid-type stepping motor
Drive Voltage
+35 VDC
±
5%
Coil Resistance
10.0
Ω ±
7%
Drive Frequency
960 ~ 4800 PPS
Excitation Mode
Constant current unipolar drive, micro step drive
In the following table, 2 W1-2 phase means the 1/8 2-2 phase drive control. Values in parentheses
( ) are for the 2-2 phase.
Table 2-2. Drive Terms
CR Speed
Frequency
Phase Drive Method
Acceleration/
Deceleration
Step
Mode 1
(200 CPS)
4800 (2400)
❏
Acceleration/Deceleration Area:
2 W1-2 phase + 1-2 phase
❏
Constant Area: 1-2 phase
Acceleration
40 (5)+110 (55)
Deceleration
32 (4)+112 (56)
Mode 2
(100 CPS)
2400 (1200)
❏
Acceleration/Deceleration Area:
2W1-2 phase + 1-2 phase
❏
Constant Area: 1-2 phase
40 (5)+40 (20)
Mode 3
(40 CPS)
960 (480)
❏
Acceleration/Deceleration Area:
2W1-2 phase
❏
Constant Area: 2 W1-2 phase
16 (2)
CR Motor
CR HP Sensor
Carriage Guide Shaft
Belt Pulley
Figure 2-4. Carriage Drive Mechanism
Stylus Pro XL
Operating Principles
REV.-A
2-5
Summary of Contents for Stylus Pro XL
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