13 Electrical installation
Pin assignment: digital incremental encoder (RS422)
Figure 140: Pin assignment: digital incremental encoder (RS422) [X2B]
Pin Name Specification
1 MT+ Motor temperature sensor, normally closed contact, PTC,
NTC, KTY
9 U_SENS+ Sensor cables for the encoder supply. In case of a long
cable, connect to US/GND at the motor end.
2 U_SENS-
10 US Operating voltage for incremental encoders
3 GND Associated reference potential
11 N / U
a0
Index pulse RS422 (differential) of the digital incremental
encoder
4 #N / U
a0
12 H_U Phase U of the Hall sensor for commutation
5 H_V Phase V of the Hall sensor for commutation
13 H_W Phase W of the Hall sensor for commutation
6
14 A / U
a1
A track signal RS422 (differential) of the digital incremental
encoder
7 #A / U
a1
15 B / U
a2
B track signal RS422 (differential) of the digital incremental
encoder
8 #B / U
a2
Avoiding EMC interferences
The outer cable shield must be connected to the housing of the angle encoder connector
with the greatest possible surface area (with low impedance).
Cable type and configuration [X2B]
We recommend a minimum cross-section of 0.25 mm² for the angle encoder supply US
and GND.
Product manual BL 4000-C Page 249 of 298
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