Carriage Motor Drive Circuit Block Diagram - Epson ActionPrinter 3000 LQ-200 Service Manual

Carriage motor specifications
Drive Voltage
Coil Resistance
Current

Carriage motor drive circuit block diagram

Figure 2-30 is a block diagram of the carriage motor drive circuit. The CPU does
not directly execute phase switching for the carriage motor. Instead, gate array
6C generates the phase switching based on CPU-generated pulses. The
STK-6981B circuit stabilizes the drive current.
Figure 2-30. Carriage Motor Drive Circuit Block Diagram
LQ-200/AP3000
4-phase, 48pole stepper motor
V f 10%
24
21 ohms f 7% at 77O F (25' C)
0.34 A, maximum (rush current)
Driving: 0.3 A, typical (triple speed, 24 VI
0.23 A, typical (double speed, 1.5 speed,
normal speed, 24 VI
0.17 A f 20%
Holding:
Principles of Operation
2-31