Fri May 17 2019

Voltage error

When attempting to boot up the OEC9800 a voltage error came up. The tower could be moved up and down but you could not expose with the button or pedal.

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Fri May 17 2019Reply from C12Guy
C12Guy

If its the Precharge Voltage error, look at the circuit breaker CB1 underneath the system. That has a tendancy to get tripped by accident. You cannot normally see CB1 without using a mirror because it is located on the bottom of the Capacitor/Power Module an inch or so off the floor.  You can locate and operate CB1 by feeling underneath the Capacitor/Power Module.  Open the breaker by positioning the handle toward the rear of the C-Arm.  Close the breaker by moving the handle toward the front of the C-Arm.  The breaker handle goes to the middle position when the breaker trips.  Reset CB1 by moving the handle to the open position and then to the closed position Also This message appears when the voltage on the generator’s precharge capacitors exceeds 250 Volts. This voltage check occurs during bootup, and shuts down the system immediately if there is a problem.  This error can occur if the system has been connected to AC but unused for a long period of time, in which the batteries become overcharged. Draining some charge from the batteries has been shown in the past to correct this error

Overvoltage error is the high voltage tank and possible snubber pcb.

Filament voltage error, If the wrong voltage is applied to the filament, the mA will also be wrong. Filament B plus wrong, duty ratio of filament drive pulses wrong, wrong filament selected, failure of filament regulation, sensor gain wrong. Filament voltage is monitored by an RMS to  DC converter on the Generator Driver PCB, and fed to the Filament Driver PCB.  If the wrong voltage occurs at FIL_VOLT relative to FIL_VOLT_REF, this is observed by the X-Ray Controller PCB.  A fault in the RMS converter or the cable from the Filament Driver PCB might also result in the wrong voltage at FIL_VOLT, but there is also a filament current sense circuit, which will confirm the error.  If there is an incorrect gain, this could be caused by the wrong filament relay selection or a problem in the relay which is on the Filament Driver PCB, but if the wrong filament selection is made, the SM_FIL_ACK* signal will be in the wrong state.  Additionally, the mA is sensed on the HV Supply Regulator PCB, providing an independent check on the correctness of the filament drive.  Other faults in the Filament Driver PCB such as wrong FIL_B_PLUS voltage are also monitored by software. 

 


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Fri May 17 2019Reply from Rapidxray.biz
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Check the battery charger and battery charger circuit breaker, test the batteries and if it's none of those ring out the power wires from the cable connecting the monitor cart to the c-arm.

Any error codes given?

Chris Salberg

Owner / Operator

Office: 844-349-9729

Mobile: 218-398-4599

chris@rapidxray.biz  

www.rapidxray.biz                  


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Tue Oct 29 2019Reply from Stormyee
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TO Rapidxray.biz, we received a Precharge Voltage Error and we followed these suggestions: https://info.blockimaging.com/how-to-resolve-an-oec-c-arm-precharge-voltage-error

This cleared it up however today we have the same message and a subsequent error that says fillament regulator failure. Any thoughts?


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Tue Oct 29 2019Reply from C12Guy
C12Guy

Filament driver pcb would be the next thing. The filament driver board functions are filament drive, filament current regulation, filament selection, interlock circuit function, precharge, and over voltage protection. 


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Tue Oct 29 2019Reply from Rapidxray.biz
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Here's what the manual says for filament regulator error. 

FILAMENT REGULATOR FAILURE - PRESS ANY KEY - This message appears when the system senses that the Xray tube filament current is out of tolerance. You may press any C-Arm control panel key to continue. However, the resolution of future images may be degraded. If problem persists, check filament regulator circuitry

So basically use RUS/RUT and recalibrate MA. If you continue to have issues then check filament circuitry.


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