User guide

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54
The Zero Cross input provides synchronisation to the mains
frequency.
An active low pulse at the mains zero cross point (i.e. twice
the mains frequency) is required. The pulse width should be in
the order of 100uS. It is imperative that this input be a
'clean', fast rise time pulse. Any jitter at the Zero Cross input
will produce flickering on the outputs.
The application circuit shows a suitable circuit for use with a
low voltage AC output from a transformer.
Dimmer
Patch
Select
Two inputs Select 0 and Select 1 are used to define the
relationship between the DMX512 input and the Phase outputs.
In normal single phase operation these two inputs should be
connected to 0V. The following table details the other options.
It can be seen that options 1,2 & 3 are used when three
AL4016 processors are used for three phase control, but use a
common DMX512 Base Address.
Phase Output Controlled by DMX Channel
Select 0 0 1 0 1
Select 1 0 0 1 1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
1
4
7
10
13
16
19
22
25
28
31
34
37
40
43
46
2
5
8
11
14
17
20
23
26
29
32
35
38
41
44
47
3
6
9
12
15
18
21
24
27
30
33
36
39
42
45
48