Secondary Encoder Channel (J104) - Aerotech SOLOIST Hardware Manual

Soloist Hardware Manual

3.1.1. Secondary Encoder Channel (J104)

This encoder channel may be used as an input for master/slave operation (handwheel) or
for dual loop systems. This encoder must be a 5-volt RS-422 line driver encoder. It allows
up to an 8 MHz encoder signal (31 nanosecond minimum edge separation), producing 32
million counts per second, after times four (x4) quadrature decoding. See Figure 3-2 for
typical input circuitry of the encoder signals. See section 3.1.1. for the mating connector
part number. See Table 3-3 for the pin numbers on J104 related to the secondary encoder
channel. See section 2.8.1. Encoder Phasing, for more information.
The Auxiliary Marker output is also the PSO output, which has a .02 micro-sec. typical
propagation delay. Pull up and pull down resistors are required on this output, when used
as the PSO output. The EncoderDivider axis parameter should be set to 0, to configure
the Auxiliary Marker as an output.
Table 3-3. Secondary Encoder Connector Pin-out (J104)
Pin # Label
1 Auxiliary Sine +
2 Auxiliary Sine -
10 Auxiliary Cosine +
11 Auxiliary Cosine -
12 +5 Volt
19 Auxiliary Marker -
20 Auxiliary Marker +
21 Common
23 Common
* Total user +5 V power is limited to 500 mA, by an internal re-settable fuse.
Aux. Marker
Aux. Marker
Figure 3-1.
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Description
Secondary Encoder Channel
Secondary Encoder Channel
Secondary Encoder Channel
Secondary Encoder Channel
+5 Volt (500mA. max.)*
Secondary Encoder Channel / PSO Output -
Secondary Encoder Channel / PSO Output +
Common (+5V Supply Return)
Common (+5V Supply Return)
+5 VDC
User Provided Pull-Up and
Pull-Down Resistors (10k Ohm)
J104
20
Opto - Isolator
19
Common
+5 VDC
User Provided Pull-Up Resistor
(10k Ohm)
J104
20
Pin 19, No
Opto - Isolator
19
Connection
23
PSO Interface (J104)
In/Out/Bi.
Output
User
Device
NOTE: Signal at pin 20 will only
vary from 1-4 volts DC
User Device
Technical Details
26
Input
Input
Input
19
Input
Bidir.
Bidir.
-
-
Double-Ended
Single-Ended
9
18
1
10
3-3