Hitachi IJ RX2 Technical Manual page 45

(3) Encoder wiring and setting of SW1 on EZJ127 PC board when used with a dedicated power supply
● Wiring used for a dedicated power supply differs according to output interface of the encoder, but can be the same
depending on power supply voltage.
(c) When open collector output and dedicated power
supply are used
(+12V, +24V)
DC dedicated power supply
+V
GND
Rotary encoder
● Switch setting for a dedicated power supply differs according to power supply voltage, but can be the same
depending on output interface of the encoder.
SW1 setting (for 12V dedicated power supply)
ON
1 2 3 4
*For open collector output and totem pole output
4.3.2-2 Setting to IJ printer
(1) Make the settings related to "Product speed matching" and "Pulse rate div. factor" at the "Print specifications"
screen. (See "Instruction manual 4.14 Set the print specifications".)
●Set "Product speed matching" to "1: Enable".
●Set "Pulse rate div. factor" as required. This function lowers (makes the period longer) the frequency of the
input pulses inside the IJ printer. The divided pulses become the pulses used in printing.
<Description of pulse division function>
Pulses from encoder
●The rotary encoder signal pulse frequency, the print scan frequency and the division factor have the
relationship shown in (Eq. 1).
Encoder pulse frequency [kHz] =
●Set "Speed compensation" at the "Print specifications" screen to "Enable", as required.
<What is "Speed compensation"?>
This function reduces changes in the print start delay when the conveyer speed changes.
This function cannot be used when the product speed matching function is not used.
In addition, this function cannot be used when "Repeat print" mode is set at the "Print specifications"
screen.
When "Speed compensation" is enabled, print start is delayed for 30 scans.
TB1
+V
6
7
GND +V
Signal
8
Signal
GND
9
ON
5 6 7 8
OFF
(When division factor: 001)
Print scan count [kHz]
Division factor (l/n)
CAUTION
(d) When totem pole output and dedicated power
supply are used
(+12V, +24V)
DC dedicated power supply
+V
GND
GND
GND
Rotary encoder
SW1 setting (for 24V dedicated power supply)
ON
1 2 3 4 5
*For open collector output and totem pole output
(When division factor: 002)
-
---(Eq. 1)
●Input/output (I/O) specifications 4-14
TB1
6
7
Signal
+V
8
Signal
GND
9
ON
6 7 8
OFF