(2) Drive Pulse Input（Cw, Ccw - Melec GDB-5K50 Instruction Manual

(2) Drive pulse input（CW, CCW）
① Operating current range : 5mA～14mA
The photo-coupler turns on with
inter-terminal voltage of 3.1V～5.5V.
(Photo-coupler diode V
② Timing chart
CWP
CCWP
t1≧0.5μs， t2≧0.5μs， tf,tr≦1μs
t3＞1μs， t4＞1μs
● The shaded area (
and the motor is driven at the rising edge (↗).
"t4" greatly varies according to the inertial moment including that of the motor.
③ Automatic switching for DRIVE/HOLD
CWP
CCWP
Motor
HOLD
current
t1≒ 16ms (HOLD SWITCHING TIME SELECT switch : ON ・DH2)
t1≒150ms (HOLD SWITCHING TIME SELECT switch : OFF・DH1)
● Inputting drive pulse causes the current output to the motor to change from
HOLD CURRENT to DRIVE CURRENT, which returns to HOLD CURRENT in about "t1".
DRIVE CURRENT continues if pulse is input on driving-state.
④ Direction of rotation
≒ 1.5V)
F
90％
10％
t1 t2
tf tr
t3 t4
) indicates light emission from the photo-coupler,
DRIVE
t1
CCW
CW(Clockwise)
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Instructions Manual
DRIVER
(J1)
CW+
300Ω
1
CW-
2
CCW+
3
300Ω
CCW-
4
[To the line driver 26LS31］
Y
26LS31
Z
Maximum response frequency : 1MHz
(at 50% duty )
HOLD
GDB-5K50
Photo-coupler
Photo-coupler
CW+ (CCW+)
CW- (CCW-)