July 2010 17 – 251
17 Power Supply
17.1 Power Supply for the iTNC 530
17.1.1 Introduction
The iTNC 530 is powered by …
HEIDENHAIN compact inverter (UE, UR) or
HEIDENHAIN power supply units (UV, UVR) or
HEIDENHAIN power supply units UV 105 (B), UV 106 (B)
The CC 42x is powered via the 50-pin ribbon cable connection and additionally via a 5 V terminal,
if required.
The CC 42x in turn powers the connected MC 42x (B/C) via a connecting board with connector.
When using the UV 106 (B), the CC is not required. --> The MC is directly connected to the
UV 106 (B).
This makes it possible to operate analog axes and spindles exclusively.
Pin layout --> See “Power Supply Units” on page 27 – 487.
The iTNC 530 (MC/CC) powers the connected units, such as scales, motor encoders, touch
probes, handwheel, transmitter-receiver units.
Exceptions:
The screen has its own connection for power supply.
The PLC outputs are powered with 24 V machine voltage.
Infra-red touch probes have a battery.
Damaged units that are powered by the iTNC may affect the supply voltages and thus the
entire system.
The central voltage for powering the electronics is the 5 V supply voltage.
The control monitors this 5 V supply voltage.
If it falls below 4.75 V, the error message 5-V power supply too low is displayed.
If it rises above 5.40 V, the error message 5-V power supply too high is displayed.
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