The ventilation modules which are installed above the TSX P57/TSX H57 PLC station racks force air convection in order to make uniform the ambient temperature inside the casing and thus eliminate the various hot spots which may exist.
NOTE: A temperature probe built into each module informs the user when the ambient temperature has reached its maximum value.
ventilation module:
Use of ventilation modules
The use of these modules is recommended in the following cases:
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Ambient temperature in the 25°C...60°C range: the life of the various components of the Premium PLC is increased (MTBF increased by 25%).
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Ambient temperature in the 60°C...0.70°C range: the ambient temperature being limited to 60°C without ventilation, forced ventilation makes it possible to lower the temperature inside the modules by 10°C, which brings the internal temperature of the modules back to the equivalent of 60°C at ambient temperature.
Three ventilation modules are available, adapted to the main supply networks: ventilation module with 24 VDC, 110 VAC or 220 VAC power supply.
According to the rack modularity (4, 6, 8 or 12 positions), 1, 2 or 3 ventilation modules are to be fitted above each rack:
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12-position racks TSX RKY 12/12EX: 3 ventilation modules,
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8-position racks TSX RKY 8/8EX: 2 ventilation modules,
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4 and 6-position racks TSX RKY 4EX/6/6EX: 1 ventilation module.
Illustration:
