Instruction manual
Page 125 / 189
Copyright © REA Elektronik
REA JET HR
pro
2K / 4K
V 3.5x_001 28.05.2015
4.2.18.1 Print head connection
4.2.18.1.1
Assignment of the print head connection
Pin HR
Name
Function
Value
Wire color
I
I/O
Pin SK
A
Internal ground
Mass
Logic + product sensor
Mass
rs
***
A
B
1RIN+
LVDS in
0.5V
ws/or
*
C
C
1RIN-
LVDS in
0.5V
or
*
B
D
1DO+
LVDS out
0.5V
ws/gn
*
E
E
1DO-
LVDS out
0.5V
gn
*
D
F
Internal ground
Mass
Pen Driver Board
Mass
gn
**
F
G
Head_30V
Supply voltage
Pen Driver Board
30V DC
ws
**
G
H
Head_30V
Supply voltage
Pen Driver Board
30V DC
bn
**
H
J
NC
NC
NC
Y
K
Head_24V
Supply voltage
Logic + product sensor
24V DC
ge
***
K
L
Internal ground
Mass logic
Mass
gr
***
L
M
Internal ground
NC
NC
M
*) = 2x 2x AWG24 (CAT6)
**) = 3 x AWG 24
***) = 3 x AWG 24
Table 25: Assignment of the print head connection
(A4, A9, A15, A16)
4.2.18.1.2
The REA JET print head cable
The data connection between the REA JET HR
pro
2K/4K control device and the print heads is a
high-speed communication interface. The requirements with regard to cable quality and transfer are
comparable to those of a CAT 6 network cable. With the application of LVDS technology, this
connection is particularly resistant against external influences. The REA JET print head cable has
been specially developed for these requirements and is drag-chain compatible.
Name / Requirement
Value static
Value dynamic
Unit
cable diameter approx.
8
8
mm
min. bending radius
24
80
mm
Drag chain movement cycles
3,000,000
cycles
Table 26: Mechanical limit values of the REA JET print head cable
Due to the high data transfer rate and the importance of print
head cables, REA JET urgently recommends using only
genuine REA JET print head cables.
