Model Type: Symphony Plus NIS21 Network Interface Slave Module
The bus connection module can also be used in slave mode if a double connection to one substation secondary device is needed.
The third mode of operation for the SPA-ZC 22 module is the optical repeater mode.
In the optical repeater mode a fibre pair from the communicator unit's optical module is
connected to the first transceiver pair of the SPA-ZC 22 module.
The data is then retransmitted over the other transceiver pair(s) in the module.
The bus connection module SPA-ZC 22 is powered form the device to which it is connected or from an external power source.
Life Cycle Definitions:
CLASSIC PHASE:
• Product is still available, but not extensively promoted (a substitution product will be
identified with cross-reference in most cases)
• No further enhancements or developments
• Customers can take advantages of the complete range of ABB life cycle services, spare
parts and maintenance materials
• End users are encouraged to evolve to replacement product
LIMITED PHASE:
• Product is no longer actively promoted
• Service support is ensured, including retrofit kits, spare parts and accessories.
• Product is no longer manufactured or limited production might be available. There are
reductions in stock levels and the number of SKUs that are stocked.
• Life extension solutions may be available under a Customer Support Agreement, which
provide “Active Phase”-like support from ABB Service team
OBSOLETE PHASE:
• Product is withdrawn from sales
• No longer manufactured as a complete product
• Retrofit kits, where applicable, are available for most applications
• Spare parts availability may diminish over time with decrease in production volumes
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