HEIDENHAIN VT 121 Operating Instructions Manual page 43

5.4 Connecting the supply voltage
WARNING
Fire hazard due to wrong power cable!
Use of a power cable that does not meet the
requirements of the mounting location may cause a fire
hazard.
Use only a power cable that meets at least the
national requirements of the respective country in
which the product is mounted
The device fulfills the requirements of standard
IEC 61010-1 only if the power is supplied from
a secondary circuit with current limitation as
per IEC 61010-1
3rd Ed.
a Class 2 secondary circuit as specified in
UL1310.
In place of IEC 61010-1
corresponding sections of the standards DIN
EN 61010-1, EN 61010-1, UL 61010-1, and
CAN/CSA-C22.2 No. 61010-1, can be used as
well.
Comply with the pin layout
Further information: "X101", Page 124
Remove and save the dust protection caps
Route the cables based on the mounting variant
Check the seals of the connection or cable
Connect the connector to connection X101
HEIDENHAIN | VT 121 | Operating Instructions | 03/2022
, Section 9.4, or from
, Section 9.4, the
3rd Ed
5.5 Connecting the camera interface
Comply with the pin layout
Further information: "X118", Page 124
Remove and save the dust protection caps
Route the cables based on the mounting variant
Check the seals of the connection or cable
Connect the connector to connection X118
The product automatically detects the pin layout of the
Ethernet cable being used (auto-crossover)
5.6 Connecting the compressed air
The cover glasses of the cameras are cleaned with
compressed air. You can use one 8 mm pressure tube, or
optionally use two 6 mm pressure tubes.
For operation with two 6 mm pressure tubes,
you must also use two on-off valves and
ensure that they are actuated simultaneously.
It is not sufficient to use only one valve with a
downstream Y manifold.
To use an 8 mm pressure tube:
Route the pressure tube based on the mounting variant
Connect the product to the compressed air unit via the
P2 threaded plug connection
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