2. Transportation, Storage and Installation
2-42
TI 33J01J10-01EN
Mar. 29, 2019-00
l Example of Mounting N-IO Nodes (Non-Intrinsic Safety Barrier) in a Cabinet
Temperatureconditions(FordirecteldwiringtoIOBP)
In this example, the ambient temperature is assumed to be the followings.
Cabinet ambient temperature
Maximum numbers of units that can be mounted in case of this example
Type Model Number of units that can be mounted per side
NIU Up to 2
IOBP
Exception to mounting heat-generating devices
Shunt Resistor Unit: A2EXR001 for the Pulse Input Signal Adaptor (A2SAP105) can be mounted
in the same cabinet under the following conditions:
• A2EXR001 shall be mounted on the side of the cabinet or under IOBP with a distance of
200 mm from NIU.
cabinet shall be reduced in accordance with the following table.
Table Number of Shunt Resistors Mounted and Mounting Conditions
Number of shunt resistors mounted Mounting condition
1 to 4 Can be mounted in the same cabinet
5 to 12 Can be mounted in the same cabinet by reducing one IOBPs
13 to 20 Can be mounted in the same cabinet by reducing two IOBPs
A2EXR001 units are mounted on a cabinet.
Mounting conditions
• The NIU shall be mounted with a 100-mm or more space from the cabinet ceiling.
• Suitable length of signal cables and power cables should be used.
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