Position Detector Inputs (J201 And J202); Figure 2-14: Position Detector Inputs Schematic - Aerotech A3200 Hardware Manual

Installation and Configuration

2.6.2. Position Detector Inputs (J201 and J202)

The Nmark CLS is equipped with one position detector input channel per Galvo connector that can be
configured for position feedback via parameter settings.
The position detector interface circuitry expects two differential voltage signals, a positive sense and a
negative sense, which are proportional to absolute position. The difference between the positive sense and
the negative sense inputs determines the absolute position.
When interfacing to an Aerotech AGV Galvo, the feedback sensitivity is 5255.4888 counts / degree.
CH1 PD A-
J201-17
CH1 PD A+
J201-4
A
CH1 PD B-
J201-18
CH1 PD B+
J201-5
A
CH1 AGC CLAMP-N
NTD32N06L
CH1 AGC+
J201-6
CH1 AGC-
J201-19
A
38
100PF
10K
12K
-
+
10K
AD8674
12K
100PF
100PF
10K 12K
-
+
10K AD8674
12K
100PF
+12V
36
D
G
1K
S
F.S.
Figure 2-14: Position Detector Inputs Schematic
Chapter 2
Nmark CLS Hardware Manual
10K
-
10K
+
AD8674
A
10K
-
10K
+
AD8674
A
IN
D S
ADG451-TSSOP
1K
.01µ
-
+
OP279
221
S D
IN
A ADG451-TSSOP
CH1 PD A
CH1 PD B
10K 10K
+2.4V REF
4.99K
.33UF
A
CH1 AGC ENABLE
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