2-12
(2) Acceleration Control
When driving the motor, acceleration control is needed to get paper feed started. In the case that the
motor is to be driven at the maximum motor drive frequency that was calculated using equation (1), the
motor must be driven slowly at first to avoid slipping of the motor under the heavy load, resulting in the
motor being out of step.
Drive the motor to the maximum driving speed that was calculated using equation (1), according to
acceleration steps in Table 2-5.
The method for accelerating the motor is as follows;
1.
Output the start step for the time calculated using equation (1)
2.
Output the first step for the first acceleration step time
3.
Output the second step for the second acceleration step time
4.
Output the nth step for the nth step acceleration time
5.
After output for the time calculated using equation (1), the motor is driven at constant speed.
Can print during acceleration.
Table 2-5 Acceleration Steps
Number of
Steps
Speed
(pps)
Step Time
(
µ
s)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
150
265
343
408
466
518
565
609
650
689
726
761
794
827
858
888
900
6666
3780
2913
2449
2147
1932
1770
1643
1538
1452
1378
1314
1259
1209
1165
1126
1111
Содержание LTP3445
Страница 1: ...LTP3445 LINE THERMAL PRINTER MECHANISM TECHNICAL REFERENCE 39019 2392 02 Seiko Instruments Inc ...
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