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34#$(1($%'()*+-%*.-05%"%$'#"(+'($+
signals
uts A and B
duty factor of 50%
phases with phase
uts
$%
5/12/24V input signals
Counter inputs A and B
Input pulses with a duty factor of 50%
C
B
On
Counter Inputs A, B and Z
50%
Off
A
A
Relationship between A and B phases with phase
differential inputs
Phase A
B
On
50%
Off
Phase B
Relationship between A and B phases with phase
D
D
Counter Input Z * / Digital Inputs (24V)
On
0V
On
Off
50%
Phase A
Off
On
Z
E
0V
* Maximum allowed frequency of Z-pulses is 1 kHz
Off
Filter
Selection
A
10 kHz
<3
>50
50 kHz
<3
>10
500 kHz
>2
<3
Note
As a general guideline it can be stated that if you want the timing requirements for
the Counter Inputs to satisfy the above mentioned specifications, you must pay
attention to the type of output driver of the encoder being used, the length of the
encoder cable and the frequency of the count pulses generated. For example, if
you use an E6B2-type Open Collector encoder (e.g. E6B2-CWZ6C) at 24 V with
10 m cable, you can typically generate count pulses up to 20 kHz. Therefore, if you
Counter Inputs A, B, Z and Digital Inputs
B
RS-422 Line Driver signals
Counter inputs A and B
Input pulses with a duty factor of 50%
F
GG
On
0V
Off
differential inputs
H
D
D
Timing requirement [µs]
B
C
D
>100
>23
>10
>4.5
>10
>20
>1
>10
>4
RS-422 Line Driver signals
Counter inputs A and B
Input pulses with a duty factor of 50%
F
G
On
0V
Off
Relationship between A and B phases with phase
differential inputs
H
On
0V
Off
Phase A
On
0V
Off
Phase B
I
I
I
Counter Input Z *
On
0V
Off
Z
J
* Maximum allowed frequency of Z-pulses is 1 kHz
E
F
G
>100
>50
>100
>20
>10
>20
>2
>4
>1
Section 1-3
G
I
H
I
J
>23
>10
>4.5
>10
>1
>10
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