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Allen Bradley 1764-RTC Warranty One Year 1764-RTC

When breaker positions result in the Speed PID switching to Frequency control, the speed setpoint is instantly stepped to the last turbine speed (frequency) sensed before Frequency control was selected. This allows a bumpless transfer between modes. If the last speed sensed was not at the ‘Rated Speed Setpoint’ (synchronous speed) setting, the speed setpoint will ramp to the ‘Rated Speed Setpoint’ setting at a defaulted rate of 1 rpm/sec (tunable through the Service mode). 

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