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ID
Parameter
CL
Setting range
[Default]
Description
The alarm must be acknowledged
and reset by manually pressing
the appropriate buttons or by
activating the LogicsManager
output "External
acknowledgment" (via a discrete
input or via an interface).
4.5.4.4
Configure MCB
General notes
If an alarm is detected when attempting to close the MCB, an emergency power
operation will be carried out if the "Emergency start with MCB failure" is "On".
If an alarm class higher than 'B' class has been selected it will not be possible to start the
engine with the setting "Emergency start with MCB failure" (parameter
) =
configured as "On" in an emergency power condition.
All parameters listed below only apply to application mode
A04
.
Circuit breaker monitoring contains two alarms: A breaker reclose alarm and a breaker
open alarm.
"Breaker reclose alarm"
If the control unit initiates a close of the breaker and the breaker fails to close after the
configured number of attempts the monitoring CB alarm will be initiated.
• Refer to parameter "MCB maximum closing attempts", parameter
•
If this protective function is triggered, the display indicates "MCB fail to close" and the
logical command variable "08.07" will be enabled.
"Breaker open alarm"
If the control unit is attempting to open the circuit breaker and it fails to see that the CB is
open within the configured time in seconds after issuing the breaker open command then
the monitoring CB alarm will be initiated.
• Refer to parameter "MCB open monitoring", parameter
•
If this protective function is triggered, the display indicates "MCB fail to open" and the
logical command variable "08.08" will be enabled.
543
easYgen-3000XT Series
B37574
4 Configuration
4.5.4.4 Configure MCB
Released