17 – 234 HEIDENHAIN Service Manual iTNC 530 HSCI
Green READY LEDs
on the drives
8 Open the electrical cabinet and check, whether the compact inverter / power supply unit /
UEC 11x controller unit with integrated inverter are ready (green READY LEDs).
(Non-HEIDENHAIN inverters presumably feature such an LED or display as well.)
Figure: Green LED READY UV on UVR 140 D (the green LED POWER MODULE READY
at the top left must also be lit)
8 Check, whether the green LED U DC-LINK ON of the connector X70 (on the upper part of the front
panel) is lit as well. This LED indicates that the charging contactor for the DC link has switched.
8 Check in addition, whether the green LEDs (PULSE RELEASE) SPINDLE/AXES at the connectors
X71 and X72 (in the lower part of the front panel) are lit. These LEDs indicate that the safety relays
for the axes and the spindle(s) are on.
Inverter Green LED
UEC 11x compact controller READY
UE 1xx, UE 2xx B, UE 2xx D compact inverters READY
UE 2xx compact inverter +5 V
UR 2xx, UR 2xx D compact inverters READY UV
UV 120, UV 140, UV 150, UV 1xx D, UVR 1xx, UVR 1xx D,
UVR 160 DW power supply units
READY UV and
POWER MODULE READY
UV 130 power supply unit READY
UV 130 D power supply unit READY UV
The connector X70 and the associated green U DC-LINK ON LED do not exist on UEC 11x
controller units. These units build up the DC link immediately when the primary voltage is switched
on; no charging contactor is activated via the connector X70.
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