Lenze EVF9383 - Manual (Page 163)

Setting the speed feedback
Incremental encoder with HTL level at X9
6.7
6.7.2
l
6.7−3 EDSVF9383V EN 7.1−04/2012
The incremental encoder must be operated with an external supply voltage.
C0421 has no influence.
ƒ Incremental encoders with HTL level require DC 8 ... 30 V supply
voltage. Please observe the information by the manufacturer.
Adjustment