Triconex Trident, Planning And Installation Manual

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I
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O Extender Modules 115
Chapter 3 System Description
I
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O Extender Modules
The following I
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O Extender Modules Kits are available.
The purpose of an I
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O Extender Module is to:
• Extend the TMR I
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O bus from one I
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O column to another I
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O column
• Provide TMR I
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O bus termination
• Provide additional input terminals for I
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O module logic power
• Provide a protective earth (safety ground) connection
An I
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O Extender Module contains:
• Three DB-9-pin I
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O bus connectors, one per channel
• Two 24-volt logic power input terminal blocks, each with fuse and blown-
fuse indicators
• One protective earth terminal block
A maximum of eight baseplates may be stacked end-to-end in a column. To extend
a system beyond eight baseplates or to separate the baseplates so that they are not
connected end-to-end, a pair of I
⁄
O Extender Modules should be used.
Model Description
2281 I
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O Extender Module Kit (without termination)
2291 I
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O Extender Module Kit for I
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O Baseplate (with termination)
2292 I
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O Extender Module Kit for MP Baseplate (with termination)