2-148 Start Permissives
Start Permissives Start permissives are conditions required to permit the drive to start in any
mode – run, jog, auto-tune, etc. When all permissive conditions are met the
drive is considered ready to start. The ready condition is available as the
drive ready status.
Permissive Conditions
1. No faults can be active.
2. No type2 alarms can be active.
3. The TB Enable input (if configured) must be closed.
4. The DC bus precharge logic must indicate it is a start permissive.
5. All Stop inputs must be negated (See special Digital Inputs Stops
Configuration issues below).
6. No configuration changes (parameters being modified) can be
in-progress.
If all permissive conditions are met, a valid start, run or jog command will
start the drive. The status of all inhibit conditions, except for item
6 above,
are reflected in the output parameter Start Inhibits. The configuration
change condition is a transient (short-term) condition and not directly user
controlled. It is therefore not reflected in the Start Inhibits parameter.
Note that the Start Inhibits conditions
do not include any of the
functionality imposed by the DPI logic such as owners, masks, local
control, etc.
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