,QVWDOOLQJWKH23%
Release 03/2004
Operating Instructions (Compact) OP 77B
3–2
6AV6691-1EA01-0AB0
3.2 Installation Position and Fixation
Installation positions
2
1
Installation
position
Max. permissible ambient
temperature
1 vertical
50
°C
2 horizontal
40
°C
Figure 3–1
Permissible ambient temperatures without
external ventilation
If the unit is installed horizontally and the permissible
ambient temperature is exceeded, external ventilation is
necessary. In general, ambient temperatures exceeding
50 °C are impermissible.
Caution
If the HMI device is used at a temperature exceeding
the maximum permissible temperature without any
external ventilation, the terms of warranty complying to
UL 508 are annulled!