Generac Power Systems R-200A Active Alarm, Re-Crank, Normal Exercise Mode, Auto Start

General Information

R-panel Technical Manual

ACTIVE ALARM LOW SPEED EXERCISE

Low Oil Pressure, High Coolant Temp, Low Coolant Level, Overspeed, Overcrank, Engine Speed Signal Loss and a Dead Battery indication will all be latched shutdowns. In the event one of these conditions occurs, the unit will be shut down, the appropriate LED will be illuminated, and the unit will not start again without manual intervention (see Re-Crank below).

RE-CRANK

If an engine speed signal failure occurs while the gen- erator is running the engine will shutdown and then attempt a re-crank. A maximum of two re-cranks will be attempted after which the overcrank LED will be set. If the engine speed signal failure occurred during the engine exercise mode the exercise timer will con- tinue from where it was at the start of the re-crank and is not reset.

NORMAL EXERCISE MODE

To select this mode, place DIP switch position 3 in the ON position.

In Normal Exercise Mode the generators will exercise at their normal running speed.

The R-200A controller will start and run the genera- tor once every seven (7) days for approximately 12 minutes. If the utility fails during the exercise period, this exercise period is aborted and the R-200A Controller transfers the load to the generator output, assumes automatic operation and continues to run until the utility is returned.

The weekly exercise cycle is set as follows:

1.Place the AUTO/OFF/MANUAL switch in the AUTO position.

2.Press and hold the "Set Exercise Time " switch for five (5) seconds and then release.

At this time all five (5) red LED's will flash for 10 seconds, then the engine will start and run for it's 12 minute exercise period, then shut down. The gen- erator will now start and run each week at approxi- mately the same time.

If battery power to the R-200A Controller is lost, the weekly exercise time setting will be lost. This is indi- cated by all five (5) red LED's continually flashing in ATS mode. In this state the generator will still start and run in MANUAL mode, or automatically start and run if utility voltage is lost while in AUTO mode, but it will NOT perform a weekly exercise cycle.

In the event of a failure while running in this mode, the five (5) red LED's will stop flashing, the indi- vidual fault LED will turn on and the engine will be shut down. Once the AUTO/OFF/MANUAL switch is switched to OFF, the individual fault LED will turn off and the five (5) red LED's will begin flashing to show that the exercise mode has not yet been set.

To select this mode place DIP switch position 3 in the OFF position.

In Low Speed Exercise mode the normal speed 3600 rpm generators will exercise at 1800 rpm. The nor- mal 1800 rpm generators will exercise at 1400 rpm in this mode.

If the utility fails during the low speed exercise period, a 10 second timer will start. If the utility returns to a normal operating level, during this 10 second time interval the low speed exercise operation will contin- ue. If the utility is still not present (i.e. utility voltage less than 60% of nominal) when the above 10 second timer expires then the low speed exercise mode is terminated and the engine will ramp up to its normal running speed within five (5) seconds. If the utility returns during the five (5) second ramp-up period the generator will terminate the exercise mode. If the utility is still not present, once the generator is up to its normal running speed, then the controller will transfer the load to the generator. When the utility returns the generator will shutdown.

If battery power to the R-200A Controller is lost, the weekly exercise time setting will be lost. This is indi- cated by all 5 red LED's continually flashing in ATS mode. In this state the generator will still start and run in MANUAL mode, or automatically start and run if utility voltage is lost while in AUTO mode, but it will NOT perform a weekly exercise cycle.

In the event of a failure while running in this mode, the five (5) red LED's will stop flashing, the indi- vidual fault LED will turn on and the engine will be shut down. Once the AUTO/OFF/MANUAL switch is switched to OFF, the individual fault LED will turn off and the five (5) red LED's will begin flashing to show that the exercise mode has not yet been set.

AUTO START

This unit is designed to automatically start in the event of a utility failure. A utility failure is defined as the utility voltage being less than approximately 60% of nominal, while the utility is considered good when it is restored to approximately 80% of its nominal value.

If the generator is already running under exercise when an auto start is required, it will simply transfer the load after a 15 second delay and then switch to auto operation.

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