20
Drive circuit
The recommended drive unit is shown below.
Notes
• Peripheral Units 1 and 2 cannot be driven simultaneously.
• For continuous driving, do not use drive duty greater than 20%.
• When using a serial interface, the compulsion switch status is available
as status data. When using a parallel interface, the compulsion switch
status can be worked out from the position of the number 34 pin of the
interface connector. The switch status is ON when the number 34 pin is at
LOW level.
• Minimum resistance for coils L1 and L2 is 24
Ω
.
• Absolute maximum ratings for diodes D1 and D2 (Ta = 25
°
C) are:
Average Rectified Current Io = 1A
Maximum forward surge current (60Hz, 1-cycle sine wave) I
FSM
= 40A
• Absolute maximum rating for transistors TR1 and TR2 (Ta = 25
°
C) are:
Collector current Ic = 2A
Collector loss Pc = 1.2W
7824
F.G
TR1
M-GND
TR2
M-GND
TR3
+5V
+24V
R1
R2
6
5
4
3
2
1
L1
L2
R3
4.7k
Ω
1/4W
Frame
ground
Printer side
User side
D1
D2
Peripheral
unit 1
With shield
Peripheral
unit 2
Compulsion
switch
Drive output: 24V, 1.0A max.
Содержание SLIP SP298 SERIES
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