GV47001b_e.doc / Feb-08
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1.
Introduction and Block Diagram
GV 470 has been designed to distribute the impulse signals of an incremental encoder or
measuring system to up to eight target units.
The encoder input is switch-selectable for operation with either standard RS422 signals or with
HTL (24 V) signals, with differential (symmetric) or single-ended (asymmetric) characteristics.
All eight output channels provide push-pull characteristics with individually adjustable output
levels, and with potential separation to the input signals.
Separate cascading inputs and outputs provide cascading of several units to totally n x 8 output
channels without loss of regular output terminals. Furthermore, cascaded configurations allow
remote selection and switch-over between several input encoders.
GV 470 is built into a most compact and space-saving housing for mounting on DIN rails.
The following drawing explains the principle of function with one of the eight output channels:
1
2
3
5VDC
24VDC
5VDC
1
2
3
4
5
6
7
8
3
1
2
3
4
5
6
7
8
INPUT
OUTPUTS
1 - 8
8
7
2
1
4
5
6
5VDC
Lev el
RS422 1 - 6 on
H TL
1 - 6 off
A
/A
B
/B
Z
/Z
( 8 x )
OPTO
Isolation
DIL Swi tch
GND int.
Select
A
/A
B
/B
Z
/Z