Hitachi IJ RX2 Technical Manual page 41

(c) When NPN interface and dedicated power
supply are used
Power
DC24V
GND
GND
24VDC dedicated
power supply
Print target detector
SW1 setting
ON
1 2 3 4
(2) Print target detector specifications
(a) When NPN interface is used
Internal circuit diagram
Tr
Print target detector
When the IJ printer input circuit is a current drive load for the print target detector output circuit and
output transistor Tr of the print target detector is ON, it becomes the print start signal input.
Use an output transistor Tr which satisfies the following specifications (NPN/PNP):
Withstand voltage
Maximum drive current : 12mA or greater (IL= 10mA)
Residual voltage
Leakage current
The IJ printer built-in power supply specifications are:
Power supply voltage
Maximum supply current
*Note 1: Total power supply to print target detector and rotary encoder is max. 100mA
(b) When PNP interface is used
Internal circuit diagram
Tr
Print target detector
TB1
1 DC24V
Signal
2 Signal
3 NC
4 NC
・SW1 "3": ON
・SW1 "5": OFF
・SW1 "6": OFF
ON
5 6 7 8
OFF
1
DC24V
IL
Signal 2
3
GND
: 24VDC or greater
: 2V or less
: 0.1mA or less
: 24V
: 100mA *Note 1
Power
IL
Signal
GND
(d) When PNP interface and dedicated power
supply are used
Power
DC24V
GND
GND
24VDC dedicated
power supply
Print target detector
SW1 setting
ON
1 2 3
DC24V
SW1-5
IJ printer
.
.
1
DC24V
2
3
SW1-6
IJ printer
TB1
1
NC
Signal
2 Signal
3
GND
4 NC
・SW1 "3": OFF
・SW1 "5": OFF
・SW1 "6": ON
ON
4 5 6 7 8
OFF
●Input/output (I/O) specifications 4-10