Paper-Feed Motor Software Control - Epson L-1000 Technical Manual

PRINCIPLES OF OPERATION

2.2.6.4 Paper-Feed Motor Software Control

The paper-feed motor is a 48-pole stepper motor and is open-loop controlled. Paper is fed 1/180th inch for each
step when the paper-feed motor is driven by the 2-2 phase excitation system. Table 2-16 shows the paper-feed
motor excitation system.
Table 2-16. Excitation Sequence (Clockwise: Paper Feeds Forward)
NOTE: If the paper-feed motor is driven counterclockwise, paper is fed in reverse.
Figure 2-48 and Table 2-17 show the timing chart and the counter values for the acceleration and deceleration
control, respectively.
2 - 5 2
Figure 2-48. Paper-Feed Motor Drive Timing Chart
REV.-A
LQ-500 / L-1000