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Re: Olympian runs 15 seconds until "FAIL TO START" fault lamp illuminates

Thanks KLR, I will do some testing along those lines and I will let you know how it works out. Thanks again for the assistance.

Cat Dealer
Dealer

Re: Olympian runs 15 seconds until "FAIL TO START" fault lamp illuminates

I have run into this before.  The controller needs to see an engine speed signal, as well as a certain voltage to the AR relay.  Look at this:

 

On the 2001 control panels, measure AC voltage at pins 16 and 20 (wires 108

and 115) of the pcb board while the genset is running. The connections are the

coil voltage connections for the AR relay and must see at least 180 volts AC or

the unit will shut down on Fail To Start.

On the 4001 and 4001E control panels the connections are pins 9 and 21 (wires

108 and 115) on the main pcb board.

Likely causes of low or no voltage

􀂉 Blown voltage detection fuse – F2, F3, or F4.

􀂉 Loose, broken or burnt voltage detection wiring – 102, 103, or 104.

􀂉 Voltage detection link in the incorrect position on terminal strip – for 300

volt and lower applications it should link wire 115 with wire 110. For higher

voltage applications it should link wire 115 to wire 101.

􀂉 AR relay on pcb board has failed.

􀂉 Motor starting load causes alternator output voltage to drop below 180

volts AC.

 

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Olympian runs 15 seconds until "FAIL TO START" fault lamp illuminates

Gentlemen,

I appreciate anyone's attention to this problem.

Olympian 121775/49

OLY50CNP500291

The genset starts and runs normally for approximately 15 seconds until the fail to start lamp lights up.

The starter drops out as in normal operation and does not reengage the ring gear.

What does the controller sense in order to tell whether or not the engine is running?