January 2012 3.8 UxC 11x (FS): Power Supply and Motor Connection 209
X80: Spindle motor
X81: Axis motor 1
X82: Axis motor 2
X83: Axis motor 3
X84: Axis motor 4
Connection:
For information on synchronous motors, asynchronous motors and power
cables, refer to the Technical Manual on Inverter Systems and Motors,
"Motors for Axis and Spindle Drives" chapter.
X71: Safety relay
for spindle
X72: Safety relay
for axes
For information on the wiring and function, see the Basic Circuit Diagram for
your control. Registered customers can download the Basic Circuit Diagram
from the HEIDENHAIN FileBase on the Internet.
Connecting termi-
nals
Assignment
U Motor connection U
V Motor connection V
W Motor connection W
Connecting terminals
X71 to X72
Assignment
1 +24 V pulse release output (max. 250 mA) for
control of the relays at X71.3 and X72.3 for drive
enabling (Axis ON, Spindle ON).
2 0 V for pulse release output
3 +24 V pulse release input for Axis ON,
Spindle ON
4 Do not assign
5 Do not assign
6
a
a. Max. 125 V
Normally closed contact (OE1, OE1A or OE1S)
7
a
Normally closed contact (OE2, OE2A or OE2S)
The +24 V pulse release voltage at terminals X71.1 and X72.1 is generated
internally by a separate power supply unit of the UxC 11x (FS). Use this
voltage exclusively for drive enabling – for supplying the relay coils that are
internally connected to X71.3 and X72.3.
The +24 V pulse release voltage must not be linked with other voltages
(e.g. +24 V NC or +24 V PLC) of the HEIDENHAIN control system.
A recovery diode is required in the proximity of inductive loads, e.g. relay or
contactor coils.
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