Baldor MicroFlex e100 - SSI Feedback

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Feedback 4-9MN1942
4.1.3 SSI feedback
The SSI (Synchronous Serial Interface) encoder interface is specifically designed for use with
Baldor SSI motors, which incorporate a custom Baumer SSI encoder. Correct operation with
other SSI interfaces cannot be guaranteed. The SSI encoder connections are made using the
15-pin D-type female connector X8. Twisted pair cables must be used for the complementary
signal pairs e.g. Data+ and Data-. The overall cable shield (screen) must be connected to the
metallic shell of the D-type connector. Connector X8 includes a ‘Sense’ pin, which is used to
detect the voltage drop on long cable runs. This allows the MicroFlex e100 to increase the
encoder supply voltage on pin 12 to maintaina5Vsupply at the encoder (200 mA max).
Pin
SSI function
1 Data+
2 Clock+
3 (NC)
4 Sense
5 (NC)
6 (NC)
7 (NC)
8 (NC)
9 Data -
10 Cloc k-
11 (NC)
12 +5 V out
13 DGND
14 (NC)
15 (NC)
Data+
Data-
+5 V out
DGND
1
9
12
13
10
2
X8
Absolute
Encoder
Clock-
Clock+
Twis ted pai rs
Chassis
Connect overall s hield
to connector backshells.
Connect internal
shields to pin 13.
Motor
4
Sense
SSI
Interface
Figure 21 - SSI encoder cable connections
1
8
9
15