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3-11
In use at temperature below -5
C
PH1
PH2
PH3
PH4
CTCRL1
Start
(5.78ms)
1st step
(5.78ms)
2nd step
(3.57ms)
Max speed=300pps
3rd step
(3.33ms)
4th step
(3.33ms)
5th step
(3.33ms)
6th step
(3.33ms)
230mA
Motor speed = 300 pps CTCRL1=”High” First set current: 0.23 (A)
Figure 3-7 Motor Drive Timing Chart (in use at temperature below -5
C)
(2) Acceleration
Control
When driving the motor, acceleration control is needed to start paper feeding. When the motor is to be
driven at the maximum motor drive frequency that is calculated using equation (1), the motor may come
out of step under heavy load.
Drive the motor to the maximum driving speed that is calculated using equation (1), according to the
acceleration steps in
Table 3-5
.
The method for accelerating the motor is as follows;
1. Output start step (6580 (
s)) for the time calculated using equation (1)
2. Output first step for the first acceleration step time
3. Output second step for the second acceleration step time
4. Output nth step for the nth step acceleration time
5. After outputting the time calculated using equation (1), the motor is driven at a constant speed.
The printer can print during acceleration.
Set the maximum drive speed to 300 pps (3333
s) for printing at lower than -5
C.
When accelerating it again after decreasing the speed, follow the method shown below.
When the step time is Tm (the reciprocal number of the frequency calculated using equation (1)),
compare Tm with the time that was taken in the previous step.
(1) In case Tm > time that was taken in the previous step (i.e. decreasing speed)
the closest acceleration step time to Tm and the acceleration step time that is larger thanTm,
are output.
(2) In case Tm < time that was taken in the previous step (i.e. reacceleration time)
the next closest acceleration step time to the previous step time or Tm, which is longer, is
output.
Содержание LTPH245
Страница 1: ...Seiko Instruments Inc LTPH245 LINE THERMAL PRINTER MECHANISM TECHNICAL REFERENCE U00055332011 ...
Страница 31: ...3 18 3 5 7 Timing Chart Figure 3 10 Timing Chart ...
Страница 60: ...7 3 Figure7 2 Printer Main Body Appearance and Dimensions LTPH245D C384 E Unit mm ...
Страница 62: ...7 5 Figure7 4 Printer Main Body Appearance and Dimensions LTPH245E C384 E Unit mm Unit mm ...
Страница 63: ...7 6 Figure7 5 Platen Block Appearance and Dimensions Unit mm ...