
DLQ-3000+
Rev. A
2-28
2.3.9 PG (Platen Gap) Motor Driver Circuit
Since a PM-type stepping motor is used for the PG motor, the motor can
rotate in the both forward and backward direction and stop anywhere. The torque from the
PG motor moves the CR guide shaft to obtain the proper PG. (Refer to Section 2.1.3.) The
motor is driven by 2-2 phase. Signals for 4 phases (PGA, PGAN, PGB and PGBN) are
output from the gate array E05B46 via the transistor array SDC03-V1. To hold the motor,
the hold signal (PGI) is output from the same gate array. Then the transistors 2SC3859
(Q4) and SHA03-V1 (Q3) are turned off to change the drive voltage from PBS (+35V) to the
5 VDC. See Table 2-18 for PG motor specification.
Table 2-18. PG Motor Specification
Motor type
4 phases/8-pole/PM-type stepping motor
Power supply voltage
35 VDC
±
6%
Coil resistance
250
±
18
Ω
Consumption current
(per 1 phase)
Rush: 0.2 A on the average
Hold: 0.02A
Drive frequency
350 pps
Drive mode
Constant current uni-polar drive
Excitation mode
Uni-polar constant voltage drive, 2-2 phase drive
Rotational direction
CW:
Widens the PG
CCW: Narrows the PG
PGA
PGAN
PGB
PGBN
PGI
VPB
+5V
PGCOM
PGA
PGB
PGC
PGD
Q4
Q3
Transistor Array
SDC03-V1
Gate Array
E05b46
Figure 2-21. PG Motor Drive Circuit Block Diagram
Содержание DLQ-3000 Minerva+
Страница 1: ...EPSON 24 PIN DOT MATRIX PRINTER EPSON DLQ 3000 SERVICE MANUAL SEIKO EPSON CORPORATION 4008259 ...
Страница 5: ...v REVISION SHEET Revision Issued Data Contents Rev A August 21 1997 First Release ...
Страница 61: ...2 3 12 Other Sensor Circuits 2 31 ...
Страница 160: ...Chapter 6 Maintenance 6 1 Maintenance 6 1 6 1 1 Lubrication and Adhesion 6 1 ...
Страница 171: ...DLQ 3000 Rev A A 6 ...
Страница 172: ...Appendix Rev A A 7 A 2 Circuit Diagrams Figure A 2 C210 MAIN Board Circuit Diagram 1 2 ...
Страница 173: ...DLQ 3000 Rev A A 8 ...
Страница 174: ...Appendix Rev A A 9 Figure A 3 C210 MAIN Board Circuit Diagram 2 2 ...
Страница 175: ...DLQ 3000 Rev A A 10 ...
Страница 177: ...DLQ 3000 Rev A A 12 Figure A 5 C124 PSB Board Circuit Diagram ...
Страница 179: ...DLQ 3000 Rev A A 14 A 3 Circuit Board Component Layout Figure A 7 C210 MAIN Board Component Layout 1 2 ...
Страница 180: ...Appendix Rev A A 15 Figure A 8 C210 MAIN Board Component Layout 2 2 ...
Страница 181: ...DLQ 3000 Rev A A 16 Figure A 9 C124 PSB Board Component Layout ...
Страница 182: ...Appendix Rev A A 17 Figure A 10 C124 PSE Board Component Layout ...
Страница 189: ...EPSON SEIKO EPSON CORPORATION ...