Connecting to the Controller
MultiFlex PCI 1000 Series User's Manual
57
Single Ended Incremental Encoder Connections
Each of the four VHDCI connectors provide two incremental encoders interfaces.
i
As shown in the drawing below the unconnected encoder inputs (A-, B-, and Z-)
must be tied to the +1.5 VDC Encoder Reference.
ADAM-3968
wiring module
11
45
12
46
13
47
Single Ended
Encoder
(Axis #1)
A out
B out
Z out
+5 VDC in
Ground
J1
11
45
Axis 1 Encoder A+
Motion Controller
Axis 1 Encoder A-
12
46
13
47
10
39
2 K
2 K
2 K
Axis 1 Encoder B+
Axis 1 Encoder B-
Axis 1 Encoder Z+
Axis 1 Encoder Z-
+5 VDC
output
Ground
A
A Error
B Error
Z Error
B
Z
+5VDC
39
58
58
+1.5VDC (Encoder ref.)
10
+1.5VDC (Encoder ref.)
Figure 18. Single ended encoder wiring example (axis #1)
i
The wiring example above assumes that the encoder outputs (A, B, & Z) are
'high active'. If any of the encoder outputs (most likely the Z output) are 'low
active' it should be connected to the '-' input of the MultiFlex and the '+' input
should be terminated to the +1.5V reference.
i
Depending on the current drive capability of the encoder the controller may not
support Encoder Fail Detection for single ended encoders. For additional
information please contact PMC Tech Support.
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