3.5 Terminal assignment
BU 0750 GB
Technical design subject to change
49
3.4.3 Encoder I/O special extension
(SK XU1-ENC, part no.: 278200120)
The Encoder I/O special E
X
tension
U
nit enables connection of an in-
cremental encoder with a TTL signal level. In this instance the in-
cremental encoder must be fitted directly to the motor shaft.
Extending the inverter in this way allows for high-precision speed
control from zero speed to twice the nominal speed of the motor.
We recommend this option especially for lifting and hoisting gear ap-
plications as it will handle load control more effectively than any
other extension available.
For more details on connection see also Section 3.6 "Colour and
contact assignment for incremental encoders".
Maximum connection cross section of the control lines:
Connector
Functions
Maximum cross section
Parameters
X11.1
Power supply and digital input
1.5 mm
2
P300 ... P330
X11.2
Incremental encoder
1.5 mm
2
NOTE:
All control voltages are related to a common reference potential!
The potentials AGND /0V and GND /0V are interconnected inside the device.
Max. allowable current load of all power sources combined = 300mA
Floating contact or
output of an SPC: 2.5 ... 33V
Digital input 13 (P330)
Voltage supply:
5V / 15V, 300mA max.
Incremental encoder input
:
TTL, RS 422,
500 – 8192 pulses/rev.
X
11
.1
X
11
.2
42 VO +15V
41 VO +5V
40 GND /0V
33 DIG IN 13
51 ENC1 A+
52 ENC1 A-
53 ENC1 B+
54 ENC1 B-
