Baldor MicroFlex e100 Installation Manual - page 47
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Feedback 4-7
MN1942
4.1.2 BiSS interface
The BiSS (Bi-directional Serial Synchronous interface) is an open-source interface that can be
used with many types of absolute encoder. The BiSS interface 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 supply
voltage on pin 12 to maintain a 5 VDC supply at the encoder (200 mA max).
Pin BiSS function
1 Data+
2 Clock+
3 (NC)
4 Sense
5 Sin-
Note: If your cable has Sin and Cos
6 Sin+
Note: If your cable has Sin and Cos
pairs they may be connected here.
However these signals are not
7 Cos-
However, these signals are not
required or used by the
8 Cos+
required or used by the
MicroFlex e100 for BiSS operation.
9 Data-
10 Clock-
11 (NC)
12 +5V out
13 DGND
14 (NC)
15 (NC)
Data+
Data-
+5V out
DGND
1
9
12
13
10
2
X8
Absolute
Encoder
Clock-
Clock+
Twisted pairs
Chassis
Connect overall shield
to connector backshells.
Connect internal
shields to pin 13.
Motor
4
Sense
BiSS
Inter
fac
e
Figure 19 - BiSS interface cable connections
1
8
9
15