Lenze EVF9333−xV - Manual (Page 208)

Commissioning
Setting the speed feedback
Incremental encoder with TTL level at X8
6
6.7
6.7.1
l
6.7−2 EDSVF9333V EN 6.2−04/2012
IMPORTANT Possible settings Code
Selection Lenze Name No.
C0420
s
Encoder const 512 1 {1 inc/rev} 8192 Number of increments for
incremental encoder at X8 or X9
l Connect incremental encoders
with HTL−level on X9 only
^
6.7−1
C0421
s
Enc voltage 5.00 5.00 {0.1 V} 8.00 Supply voltage for the incremental
encoder at X8
CAUTION! A wrong entry can
destroy the incremental encoder!
6.7.1 Incremental encoder with TTL level at X8
On X8, only incremental encoders with TTL level can be operated. Wiring
diagram and pin assignment of X8 are described in chapter "Wiring of the
standard device"
® "Wiring of the feedback system".
ƒ C0025 = 100. In addition, you have to set the number of increments in
C0420.
ƒ C0025 = 110, 111, 112 or 113. The number of increments (512, 1024,
2048 or 4096) is automatically set.
The incremental encoder is supplied with voltage by the drive controller.
(
Stop!
If the supply voltage is too high, it may destroy the incremental
encoder.
Under C0421 you can adjust the supply voltage V
CC
(5 V) of the incremental
encoder in order to compensate for the voltage drop along the incremental
encoder cable (if required).
Calculation of the voltage drop
DU [ l [m] @
R [ W]
[m]
@ I
Inc
[A]
l Length of the incremental encoder cable
R Resistance of the incremental encoder cable
I
Inc
Current consumption of the incremental
encoder
Activation
Adjustment