YOKOGAWA CENTUM CS, Technical Information

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2. Transportation, Storage and Installation
2-40
TI 33J01J10-01EN Mar. 29, 2019-00
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Example of Mounting an FCU for N-IO and N-IO Nodes in a Cabinet (For field
wiring via terminal board)
Temperature conditions
In this example, the ambient temperature is assumed to be the followings.
Cabinet ambient temperature 40 °C or less
Maximum numbers of units that can be mounted in case of this example
Type Model Number of units that can be mounted per side
FCU A2FV50S/A2FV50D Up to 1
NIU A2NN30D Up to 2
IOBP A2BN3D Up to 12 (3 rows × 4 shelves)
Heat-generating devices other than the above shall not be mounted in the cabinet.
Mounting conditions
• The FCU on the top shelf shall be mounted with a 100-mm or more space from the cabinet
ceiling.
• A 1-unit (= 44.45 mm) or more space shall be provided between NIU and IOBP.
• A circulation fan unit shall be mounted on the shelf below the FCU with a 1-unit space.
A 1-unit or more space shall be provided under the circulation fan unit.
• Suitable length of signal cables and power cables should be used.