www.supportme.net

4-6 Feedback MN1942

4.1.2 SSI feedback
TheS SI (Synchronous Serial Interface) encoder interfac e is specifically designed for us e with
Baldor SSI motors, which incorporate a custom Baumer SSI encoder. Correct operation wit h
other SSI interfaces cannot be guaranteed. The SSI enc oder connections are made using the
15-pin D-type female connector X8. Twisted pair cables must be used for the c omplementary
signal pairs e.g. Data+ and Data-. The overall c able shield (screen) must be connected tothe
metallic shell of the D-type connector. Connector X8includes a ‘S ense’ pin, which is used to
detect the voltage drop on long cable runs. This allows the MicroFlex e100 to increase the
encoders upply voltage on pin 12 to maintain a 5V supply at the encoder (200mA max).
Pin SSIfunction
1Data+
2Clock+
3(NC)
4Sense
5(NC)
6(NC)
7(NC)
8(NC)
9Data-
10 Clock-
11 (NC)
12 +5Vout
13 DGND
14 (NC)
15 (NC)
Data+
Data-
+5Vout
DGND
1
9
12
13
10
2
X8
Absolute
Encoder
Clock-
Clock+
Twistedpairs
Chassis
Connectoverall shield
toconnector backshells.
Connectinternal
shieldsto pin 13.
Motor
4Sense
SSI
Interface
Figure18 - SSI encoder cable connections
1
8
9
15