6.2    Maintenance  Parts 
Unified Controller nv series PROFIBUS(PA912) Module Instruction Manual   
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  6.2  Maintenance Parts 
For early recovery in case of failure, it is recommended preparing at least the 
following maintenance parts. 
 
Table 6-2    Maintenance parts 
Product name  Quantity  Remark 
PA912 module  1  To limit system down to the minimum, at least one 
should be kept as a spare. 
Optical cable  1  To limit system down to the minimum, at least one 
each should be kept as a spare. 
PROFIBUS 
transmission cable 
1 
 
  Important 
•
  When storing spare items, avoid a place with high temperature or humidity.