HEIDENHAIN iTNC 530 HSCI - Page 477

28 – 478 HEIDENHAIN Service Manual iTNC 530 HSCI
X71:
Safety relay
for spindle
X72:
Safety relay
for axes
For information on the wiring and function, see the circuit diagram for your machine.
X80: Spindle motor
X81: Axis motor 1
X82: Axis motor 2
X83: Axis motor 3
X84: Axis motor 4
X89:
Braking resistor
X90:
24 V output
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)
Note
The +24 V pulse release voltage at terminals X71.1 and X72.1 is generated internally by a separate
power supply unit of the UEC 11x. This voltage may only be used for drive enabling (for supplying
the relay coils that are internally connected to X71.3 and X72.3).
Attention
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.
Attention
A recovery diode is required in the proximity of inductive loads, e.g. relay or contactor coils.
Connecting terminals Assignment
U Motor connection U
V Motor connection V
W Motor connection W
Connecting terminal X89
UE 11x
Assignment PW 21x PW 1x0(B);
Connecting terminal X1
1+U
Z
RB1 1
2 Switch to –U
Z
RB2 2
Connecting terminal X90 Assignment
+ +24 V (max. 3.5 A)
–0 V