Baldor MicroFlex, Installation Manual

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Feedback 4-9 MN1919
4.1.3 Resolver feedback - X8
The resolver connections are made using the 9-pin D-type male connector X8. Twisted pair
cables must be used for the complementary signal pairs e.g. SIN+ and SIN-. The overall cable
shield (screen) must be connected to the metallic shell of the D-type connector. The resolver
input is used to create an encoder signal inside the MicroFlex. This provides the MicroFlex
with an equivalent resolution of 4096 pulses per revolution (ppr), although this can be
reconfigured in the Mint WorkBench Commissioning Wizard to provide 1024 ppr. The
MicroFlex provides an input accuracy of ±3 counts. When used with a typical Baldor BSM
series resolver motor the combined accuracy is ±11 counts (calculated with the input
equivalent resolution set to the factory preset value of 4096 ppr). The left LED illuminates red
if there is a fault or loss of the resolver signal; the right LED is unused.
Location Connector X7
Pin Name
1 REF+
2 COS+
3 SIN+
4 (
NC
)
5 AGND
6 REF-
7 COS-
8 SIN-
9 Chassis
Description Resolver input on a 9-pin male D-type connector
1
6
2
7
3
8
5
R2
R1
S2
S4
S1 S3
X8
SIN+
SIN-
COS+
COS-
REF+
REF-
AGND
+
Twisted
pairs
Baldor motor
resolver connector
5
6
3
4
1
2
Connect overall shield
to connector backshells.
Connect internal
shields to AGND.
+
+
Figure 19 - Resolver cable connections
1
5
6
9