6.4.5 5-V Power Supply (Only UV130D)
X74
6.4.6 Unit Bus
X79: Unit bus
6 – 56
Connection:
Connecting
terminal X74
+
–
Connection:
40-pin ribbon
Assignment
connector
1a to 3b
0 V
4a
+24 V
4b
+24 V
5a
+15 V
5b
+24 V
6a
+15 V
6b
+15 V
7a to 8b
Do not assign
9a
Reserved (SDA)
9b
Do not assign
10a
Reserved (SCL)
10b
ERR.TEMP
11a
PF.PS
11b
0 V
12a
RES.PS
12b
0 V
13a
PWR.OFF
13b
0 V
14a
5 V FS (spindle
enable)
14b
0 V
15a
5 V FA (axis
enable)
15b to 16b
0 V
17a and 17b
–15 V
18a and 18b
+15 V
19a to 20b
+5 V
Danger
The interface complies with the requirements of IEC 61800-5-1 for low
voltage electrical separation (except for 1a to 6b).
HEIDENHAIN Technical Manual for Inverter Systems and Motors
Assignment
+5 V (load capacity 20 A)
0 V
*1
*1
These voltages must not be linked
*1
with other voltages (only basic
*1
insulation)!
*1
*1
*1