MiCOM P632
Switchgear Unit Cannot Be Controlled
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Should a switchgear unit refuse to be controlled, then this may be due to the following reasons:

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General enable for switch commands has not been set.

(Configuration at MAIN: Inp.asg. ctrl.enabl., Par/Func/Glob menu branch)

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Interlocking has operated.

(Check at MAIN: Interlock equ. viol., Oper/Cycl/Log menu branch).

Which interlock(s) is(are) activated may be checked at:

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Bay interlock (BI): MAIN: Bay interlock. act., Oper/Cycl/Log menu branch

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Substation interlock (SI): MAIN: Subst. interl. act., Oper/Cycl/Log menu branch

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With control set to “Local”:

It is possible to deactivate the interlock through an appropriately configured binary signal input.

(Configuration at MAIN: Inp.asg.interl.deact, Par/Func/Glob menu branch)

Hint

A substation interlock is only effective when a communication link exists from the communication interface to the substation control level. If the communication link is disrupted then the device switches automatically to bay interlock (BI) without substation interlock (SI). Whether or not a communication error is present can be checked at MAIN: Communication error (Oper/Cycl/Log menu branch).

The substation interlock (SI) can be deactivated selectively for any switchgear unit and in any control direction – “Open” or “Close”. (Check – e.g. for DEV01 – at DEV01: Open w/o stat.interl or DEV01: Close w/o stat. int. (Par/Func/Cont menu branch).