Oki MICROLINE 320 Turbo Maintenance Manual

42089201TH Rev.4 21 /
Oki Data CONFIDENTIAL
2.1.7 SP/LF Motor Control
(1) Space motor control
The SP motor driver (ECN30105) drives the three-phase brushless motor based on the
phase signal (SPU, SPV and SPW) and the speed instruction data from the LSI. The MPU
can identify the current speed of the space motor by measuring through the LSI the pulse
length of the output (øA, øB) of the slit encoder included in the space motor.
By comparing the target speed for each print mode with the actual current speed to change
the speed instruction data, the motor speed is accelerated or decelerated to maintain the
specified speed for each print mode.
SP truth table
HALL AMP INPUT OUTPUT
SPU SPV SPW U V W
H L H L H OPEN
H L L L OPEN H
H H L OPEN L H
L H L H L OPEN
L H H H OPEN L
L L H OPEN H L
SPU
SPV
SPW

Oki MICROLINE 320 Turbo Specifications

General

Color	No
Built-in barcodes	Code 39
Maximum resolution	288 x 144 DPI
Maximum number of copies	6 copies
Media thickness	0.36 - 0.43 mm
Dimensions (WxDxH)	399 x 355 x 117 mm
Networking features	OkiLAN 6120e 10/100 Base-T
Connectivity technology	Wired
Compatible operating systems	Windows Vista, XP, 2000/ME, 98 & NT 40; UNIX, MS-DOS, Novell
Page description languages	Epson FX
Sound pressure level (printing)	52 dB
Mean time between failures (MTBF)	10000 h
Power consumption (typical)	100 W
Operating temperature (T-T)	5 - 40 °C
Operating relative humidity (H-H)	20 - 80 %