Carriage Motor Control - Epson LQ-510 Technical Manual

REV.-A
2.3.4.6 Carriage Motor Software Control
This section describes the carriage motor software control.
Excitation System
The excitation system is determined by the firmware and is executed in accordance with the carriage speed,
as shown in Table 2-4. The motor drive sequence for each excitation system is shown in Tables 2-5 and 2-6.
x3
x2
x15
x1
pps = pulses per second
CR DIRECTION
Step No.
I
1
2
3
4
5
6
7
6
LQ-510
Table 2-4. Phase-Excitation Method
Carriage Speed
900
600
900
600
Table 2-5. Drive Sequence (2-2 Excitation)
Table 2-6. Drive Sequence (1-2 Excitation)
Left + Right
Phase A
Phase B Phase C Phase
ON OFF
ON OFF
ON
OFF
OFF OFF
OFF ON
OFF ON
OFF ON
OFF
OFF
Phase-Excitation Method
pps
2-2
pps 2-2 Phase
pps
1-2 Phase
pps
1-2 Phase
D
Phase A Phase
OFF ON ON
OFF
OFF ON
ON OFF ON
ON OFF OFF
ON ON OFF
OFF OFF OFF
OFF ON OFF
OFF
ON OFF
PRINCIPLES OF OPERATION
Phase
Right + Left
B
Phase C Phase D
OFF ON
OFF OFF
I I
OFF OFF
OFF OFF
OFF ON
ON OFF
ON ON
OFF ON
OFF
OFF
I
ON
ON
ON
OFF
OFF
OFF
2-47