close. The breaker off relay will close for the compact breaker to open and hold it closed long enough for the
motor in the breaker to recharge the breaker. If the compact breaker is tripped externally, it is recharged auto-
matically before next closing.
If compact breaker is selected, the length of breaker open signal can be adjusted. This can be
done in menu 2160/2200 (GB open fail and MB open fail).
6.4.2 Breaker feedback
Whether breaker feedbacks are necessary or not depends on which type of breaker is selected in the applica-
tion configuration of the utility software (USW) .
Continuous NE and Continuous ND
This type of breaker does not require feedback.
Pulse
Because of the pulse signal, it is required that at least one feedback is configured for each breaker.
External/ATS no control (only applies to AGC 145/146 as mains breaker)
With this type of breaker signal, it is required that both breaker on and off inputs are configured.
Compact
This type of breaker signal requires that at least one feedback is configured for each breaker.
6.5 Breaker spring load time
To avoid breaker close failures in situations where breaker ON command is given before the breaker spring
has been loaded, the spring load time can be adjusted for GB/TB and MB.
The following describes a situation where you risk getting a close failure:
1. The genset is in auto mode, the auto start/stop input is active, the genset is running and the GB is closed.
2. The auto start/stop input is deactivated, the stop sequence is executed and the GB is opened.
3. If the auto start/stop input is activated again before the stop sequence is finished, the GB will give a GB
close failure as the GB needs time to load the spring before it is ready to close.
Different breaker types are used, and therefore there are two available solutions:
1. Timer-controlled
A load time setpoint for the GB/TB and MB control for breakers with no feedback indicating that the spring is
loaded. After the breaker has been opened it will not be allowed to close again before the delay has expired.
The setpoints are found in menus 6230, 7080 and 8190.
On AGC mains controllers (AGC 145/146) , the spring load feedback from the tie breaker can be
connected instead of the GB spring load feedback.
2. Digital input
Two configurable inputs to be used for feedbacks from the breakers: One for GB/TB spring loaded and one
for MB spring loaded. After the breaker has been opened it will not be allowed to close again before the con-
figured inputs are active. The inputs are configured in the ML-2 utility software. When the timers are counting,
the remaining time is shown in the display.
AGC 100 Designer's Reference Handbook
4189340766 UK
Additional functions
DEIF A/S Page 52 of 152
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