Encoder Output - X7 - Baldor MicroFlex Installation Manual

4.1.3 Encoder output - X7

1
6
9
5
This output can be used for position feedback to a host positioner, or in master/slave situations
where the axis movement can be transmitted to another controller or MicroFlex. It is
recommended that this output only drives one output circuit load. The encoder outputs are
differential and conform to the RS422 electrical specification. Shielded twisted pair cable is
recommended.
If the MicroFlex is configured for incremental encoder feedback, X7 duplicates the encoder
signals entering X8. If operating in Halls-only mode, there will be no encoder output at X7.
If the MicroFlex is configured for SSI feedback, a simulated encoder output is produced at X7.
The default simulated encoder output resolution is 16384 counts per revolution, but this can be
altered using the Drive Setup Wizard in WorkBench v5. At 62.5 microsecond intervals (a
16kHz sampling rate), the simulated encoder output generates a burst of A and B pulses (and
a Z pulse if required). The frequency of the pulses in the burst is constant, and is selected by
the drive to suit the chosen resolution of the simulated encoder output. The length of the burst
is varied to represent the change in the input encoder's position during the preceding 62.5
microsecond interval. See the keyword ENCODERLINESOUT in the Mint help file.
Connect internal
shields to DGND.
Figure 14 - MicroFlex encoder output to Mint controller encoder input
MN1919
Location Connector X7
Pin Name
1 CHA+
2 CHB+
3 CHZ+
4 (NC)
5 DGND
6 CHA-
7 CHB-
8 CHZ-
9 (NC)
Description Encoder output on a 9-pin female D-type connector
MicroFlex
X7
CHA+ 1
CHA- 6
CHZ+ 3
CHZ- 8
CHB+ 2
CHB- 7
DGND 5
Connect overall shield
to connector backshells.
NextMoveBX
II
encoder input
1
6
3
8
2
7
5
Feedback 4-7