Hitachi UX2 - Specifications of Input;Output (I;O)

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4.3. Specifications of Input/Output (I/O)
To handle external signals, follow the voltage, current, and time described in this manual. Otherwise, operation
of the unit cannot be guaranteed. The electrical characteristics of input/output (I/O) signals are listed in the table
below.
(a) Input signal (external unit -> IJ Printer)
Electrical characteristics of input signals (external unit -> IJ Printer)
No.
Signal name
Function
Electrical characteristics
1
Print target
detector
Indicates the arrival of a print
target.
With +24 V power supply (maximum 100 mA) (*1)
• For no-voltage input (NPN)
ON output current:
Maximum 12 mA
OFF output voltage: 24 V
(*3)
• For voltage input (PNP)
ON input current (at 24 V):
Maximum 12 mA
OFF input voltage:
Maximum 1 V (*3)
2
Print stop
Instructs not to print even
when a print target is detected.
• For no-voltage input (NPN)
ON output current:
Maximum 6 mA
OFF output voltage: 24 V
(*3)
• For voltage input (PNP)
ON input current (at 24 V):
Maximum 6 mA
OFF input voltage:
Maximum 1 V (*3)
3
Encoder
(for speed
matching)
Inputs a pulse proportional to
the transport speed of a print
object.
With +24 V power supply (maximum 100 mA) (*1)
• No-voltage input
(NPN open collector)
ON output current:
Maximum 20 mA
OFF output voltage: 24 V
(*3)
• Voltage input
(totem pole)
ON input current (at 24 V):
Maximum 20 mA
OFF input voltage:
Maximum 1 V
4
Startup (*2)
Indicates a signal with the
same function as the [Start]
button on the screen operation.
The process from ink ejection
to ready state is performed.
• For no-voltage input (NPN)
ON output current:
Maximum 6 mA
OFF output voltage: 24 V
(*3)
• For voltage input (PNP)
ON input current (at 24 V):
Maximum 6 mA
OFF input voltage:
Maximum 1 V (*3)
5
Reset
Indicates a signal with the
same function as the [Reset] or
[Close] button in the fault
message window. The fault is
reset.
• For no-voltage input (NPN)
ON output current:
Maximum 6 mA
OFF output voltage: 24 V
(*3)
• For voltage input (PNP)
ON input current (at 24 V):
Maximum 6 mA
OFF input voltage:
Maximum 1 V (*3)
6
Stop
Indicates a signal with the
same function as the [Stop]
button on the screen operation.
Ink stop (automatic cleaning
stop) is performed.
• For no-voltage input (NPN)
ON output current:
Maximum 6 mA
OFF output voltage: 24 V
(*3)
• For voltage input (PNP)
ON input current (at 24 V):
Maximum 6 mA
OFF input voltage:
Maximum 1 V (*3)
7
Deflection
voltage ON/OFF
Indicates a signal with the
same function as [Ready] or
[Standby] on the [HOME]
screen operation. Each time a
signal is input, deflection
voltage is switched on/off, and
the ready and standby states
are switched.
• For no-voltage input (NPN)
ON output current:
Maximum 6 mA
OFF output voltage: 24 V
(*3)
• For voltage input (PNP)
ON input current (at 24 V):
Maximum 6 mA
OFF input voltage:
Maximum 1 V (*3)
(*1): The maximum supply current of +24 V power supply in the combination of the print target detector and encoder is
100 mA.
(*2): Take enough care to handle the startup signal that instructs ink ejection.
(*3): When the input signal is OFF, the transistor leak current of the external unit should be 0.1 mA or less.