6 – 32 HEIDENHAIN Technical Manual for Inverter Systems and Motors
6.1.19 UM 112D Power Module
X112 PWM, axis / spindle
X112
PWM, axis/spindle
(The upper or lower X112 may be used;
Internally both of these inputs are switched in parallel.)
X79 Unit bus
Sliding switch:
AXIS: Axis module
Enabling through X72 of the power supply unit
SPINDLE: Spindle module
Enabling through X71 of the power supply unit
X344 24-V supply for motor holding brake
X392 Motor holding brake
X81 Motor connection for axis / spindle
Equipment ground
X392
X344
X82
U
V
W
Danger
Do not engage or disengage any connecting elements while the unit is
under power!
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