Power supply
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Danger for persons, the environment or equipment Bring the Bus Terminals system into a safe, de-energized state before starting mounting, disassembly or wiring of the Bus Terminals! |
The supply connections Vk for the module electronics (K-bus) and supply connections for the field devices (power contacts) of a terminal block are galvanically separated from each other and can be supplied via separate 24 VDC voltage sources. If no electrical isolation is required between K-bus and field devices, the module electronics and the field devices can be supplied from a single voltage source.
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Notes on fail-safe operation For the trouble-free operation of a K-bus extension system, the ground connection of the K-Bus power supplies (Vk 0V) of all terminal blocks must be connected with each other via a low-resistance connection (see Figure). This also includes the ground connection of the K-bus power supply of the higher-level Fieldbus Coupler! |
