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When multiple SC controllers are synchronized, the tool strategy parameters are the same for each. This allows
each fastener in the assembly to be driven to the final target in the same manner at a controlled pace. For each
step to be synchronized the Delay Between Steps parameter must be greater than zero for each controller.
To synchronize the SC controllers simply assign a START input on the lead controller and configure the Spindle
number as ALL.
Setup -> I/O -> Discrete Input -> Start -> Spidle -> ALL
10.4
Multi spindle operation
The fixtured tools must be started with a remote start switch connected to the START input of the lead SC
controller. The lead controller will apply a start to the synchronized trailing spindles in the system.
When the remote start switch is depressed all tools will start. All tools will run the first step in the selected Job/
Task. Once each tool has completed the first step it will stop and wait for all tools to finish the step. If all tools
finished the step OK then all tools start the next step in the multi-step strategy. This process continues until all
steps are complete or any tool times out or is stopped or aborted.
All multi-step rules still apply in that the tool must meet the programmed OK window to move on to the next
step. If a tool fails a step it will stop which causes all other tools to stop immediately. Once they stop the In-
Cycle indicator on the run screen will go away and a SYNC shutoff code is indicated for all controllers except
the one that failed to complete a step OK. All tools will be stopped immediately if any single tool is stopped due
to an abort event.
When in synchronization mode any Reverse, Job Select, Task Select or PartID input from any of the
synchronized spindles will cause all spindles to react to the input.
All spindles are required to maintain the same number of accumulated bolt count. If one spindle has a bolt count
different from the other the controllers will not run from the START: ALL input. Individual spindles must be ran in
recovery operations to get all spindles on the same bolt count to continue or reset the Job to recover.
10.5
Recovery
In certain stations the system is allowed to retry fastening cycles or to perform a recovery operation. The logic
for these recovery operations can become very complex especially if Error Proofing is enabled and the user
wishes to maintain equal bolt counts on the controllers.
It is important to understand that the START: ALL input cannot be used to start individual spindles for forward or
reverse operations if a spindle is disabled through the STOP command. Individual Starts, Stops and Reverses
must be applied to the spindles required to run in recovery operations.
SC Series Controllers
Multi spindle
115 / 1032
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