Installation Position And Fixation - Siemens SIMATIC HMI OP 77B Operating Instructions Manual

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3.2 Installation Position and Fixation

Installation positions
Installation
position
1 vertical
2 horizontal
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!
3–2
Release 03/2004
1
2
Max. permissible ambient
temperature
50 °C
40 °C
Operating Instructions (Compact) OP 77B
6AV6691-1EA01-0AB0