
The STB NIB 1010 Basic NIM Module
Logic Power
Introduction | Logic power is a 5 VDC power signal on the island bus that the I/O modules require | |
| for internal processing. The NIM has a | |
| power. The NIM sends the 5 V logic power signal across the island bus to support | |
| the modules in the basic segment. | |
External Source |
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Input from an external 24 VDC power supply is needed as the source power for the | ||
Power | NIM’s | |
| 24 V to 5 V of logic power. The external supply must be rated safety extra low | |
| voltage | |
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| CAUTION |
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| IMPROPER GALVANIC ISOLATION |
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| The power components are not galvanically isolated. They are intended |
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| for use only in systems designed to provide SELV isolation between the |
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| supply inputs or outputs and the load devices or system power bus. You |
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| must use |
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| island. |
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| Failure to follow this precaution can result in injury or equipment |
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| damage. |
Logic Power |
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The figure below shows how the NIM’s integrated power supply generates logic | ||
Flow | power and sends it across the basic segment: |
5V
24 V
24 VDC
26 | 890USE19600 April 2004 |