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Note
Bill of quantity
Observe free space!
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Siemens
Building Technologies
You must ensure, however, that sufficient ventilation is available to maintain
the permissible ambient temperature for the devices (inside the cabinet /
installation box).
Outside, the temperature should be 10 K lower.
5.3.2
Space requirements
Space requirements in the installation box can be calculated as follows:
• Number of I/O modules x 64 mm.
• Number of power modules x 96 mm.
• Number of bus interface modules x 32 mm.
• DESIGO PXC3 room automation station x 162 mm.
• Transformers
• Terminal strips.
All connection terminals must be connected unhindered and inspected. We
recommend at least 30 mm between the modules and the cable ducts.
This results in the following distance of the standard rails/cable ducts:
90 mm (module width) + (b = cable duct width) + 2 x ≥30 mm (available space for
wiring).
Mounting and installation
Installation box TRA
CM111043en_03
2013-02-23
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