Drive Circuit - Star SP298 SERIES User Manual

Drive circuit

The recommended drive unit is shown below.
Drive output: 24V, 1.0A max.
F.G
TR1
M-GND
TR2
M-GND
+5V
TR3
Notes
• Peripheral Units 1 and 2 cannot be driven simultaneously.
• For continuous driving, do not use drive duty greater than 20%.
• The status of the compulsion switch can be known from the following.
Star mode
ESC/POS mode : The status of the compulsion switch can be known by
Parallel interface: The status of the compulsion switch can be known by
• Minimum resistance for coils L1 and L2 is 24Ω.
D1
7824
+24V
D2
R1
R2
Printer side
: The status of the compulsion switch can be known by
using the automatic status function or <ENQ>
commands. In the case of ENQ status, bit 7 will be
"1"when pin No. 6 of the peripheral unit drive circuit
is high (switch on).
using the automatic status function, <DLE><EOT>n,
and <ESC>"u"n commands.
pin No. 34 on the parallel interface connector. When
the compulsion switch is on, pin No. 34 will be low.
This can be checked by using the compatibility mode.
1
With shield
2
L1
3
4
L2
5
Peripheral
unit 2
6
Frame
ground
User side
138
Peripheral
unit 1
R3
4.7kΩ
1/4W
Compulsion
switch