Description
2.3 Protection system
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
75
Note
For security reasons, the maintenance mode DAS+ can only be deactivated using the
same
method by which it was activated.
Application examples
The following figure shows the activation of the maintenance mode DAS+ by the digital
ETU input with a normally-closed contact (NC) and a normally-open contact (NO).
• LOW signal (NC):
The maintenance mode DAS+ is active when there is no signal present at the
secondary disconnect terminals X8-5 and X8-6 (example ①)
• HIGH signal (NO):
The maintenance mode DAS+ is active when there is a signal present at the
secondary disconnect terminals X8-5 and X8-6 (example ②)
The digital ETU output, secondary disconnect terminals X8-7 and X8-8, is used for
signaling "DAS+ ON".
Terminal assignment for maintenance mode DAS+:
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