
SBP - Sensor Board Pulse
08.2000
Connecting-up
Siemens AG 6SE7087-6NX84-2FA0
SIMOVERT MASTERDRIVES
Operating Instructions
4-7
The encoder is provided with signals of track A+, A-, B+, B- zero+,
zero- and an additional control signal for monitoring the encoder cable.
The additional transmission of the inverted signals results in increased
interference immunity, which means that longer signal cables can be used than
for unipolar signal transmission.
The screen of the encoder line must be connected to earth ground a wide area,
both on the motor side and on the converter side.
X401
Pulse encoder
A+
A-
B+
B-
zero+
zero-
CTRL+
M
PE
+
−
X400
Fig. 4-2 Connecting a pulse encoder with TTL level, bipolar (RS422)
Example of
connecting encoder
signals with TTL
level, bipolar (RS422)