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BC 120 visual
display unit
BF 120 visual
display unit
PLC input/
output unit
3 – 12
Strong electromagnetic or magnetic fields can lead to a slight distortion of the
picture on the BC 120.
To prevent distortion:
7 7 7 7
Maintain a minimum clearance of 0.5 m between the screen housing and
sources of interference. Possible sources of interference include permanent
magnets, motors and transformers.
Space requirements for air circulation are shown in the dimension drawing at
the end of this chapter.
The BF 120 flat-panel display must be viewed with a slight backward slant.
During installation, ensure a viewing angle of 150° > α > 90°.
7 7 7 7
A maximum of four PL 410B or one PL 405B can be connected to the TNC.
TNC 426 CB, TNC 430 CA:
n
You can mount one PL on the logic unit.
n
Additional PLs must be mounted separately in the electrical cabinet.
TNC 426 PB/M, TNC 430 PA/M:
n
The PLs must be mounted separately in the electrical cabinet.
α
BF 120
TE
HEIDENHAIN Technical Manual TNC 426, TNC 430
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