HEIDENHAIN iTNC 530 Service Manual page 491

Supply voltage: 400 V ± 10%
Connector on the
front panel
Pin layout:
Connecting terminal
U
V
+U
-U
Equipment ground (YL/GY) ≥ 10 mm
For connection to connector X69/X169 of the CC, See "X69: NC power supply and control
50-pin ribbon cable
signals" on page 27 – 481.
Pin layout:
5V terminal on the
front panel
Wire color of 5-V connection
Black
Red
July 2010
DC
DC
a. Connecting cable 1.5 mm
Note
You must connect the supply voltage to the terminals U and V via an isolating transformer
(300 VA, basic insulation as per EN 50 178 and VDE 0550).
Caution
Do not ground this isolating transformer on the secondary side!
The isolating transformer decouples the dc-link voltage from ground. Grounding the isolating
transformer on the secondary side leads to an addition of the dc-link voltage and the supply
voltage. This would overload and thus destroy the UV 105 B.
Caution
For mounting the UV 105 B, the additional 5V lines must be connected with the correct
polarity!
Otherwise there will be a short circuit of these lines on the 5V ribbon wires.
Pin layout
a
U
a
V
DC-link voltage of the non-HEIDENHAIN inverster system
DC-link voltage of the non-HEIDENHAIN inverster system
2
2
5 V terminal on CC 42x (B)
0 V
+5 V
27 – 491