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3.4.3 Motor Driving Precautions
Acceleration Control
When driving the motor, acceleration control is needed to get start up in order to maintain the power
force.
Drive the motor to the driving speed, according to acceleration steps shown in Table 3-4.
The method for accelerating the motor is as follows:
1. Output the start step time.
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 accelerating up to the motor driving speed, the motor is driven at constant speed.
The printer can print during acceleration.
The maximum printing speeds differ depending upon the drive method of the thermal head. Set the
acceleration step as follows.
Accelerate the motor up to the step number 126 and motor driving frequency 1760 (PPS) for
performing an acceleration control at two-division driving.
At dynamic division driving, or, when using the LTPF347 under 0°C to 10°C in temperature, change
step number 59 into the motor driving frequency of 1200 (PPS) and step time 833 (µSEC), and then
accelerate the motor up to the step number 59 and motor driving frequency 1200 (PPS).