• Embeds the Power Fault Detect Module. Now standard on all machines equipped with the Next Generation Control.
• Indicates the Status of the three phase power.
• Low Voltage power indicator LEDs.
• Circuit breaker open indicator circuit.
• Added a ground fault detect circuit for the 115 VAC line.

There is an embedded power fault detect monitor built-in to the NGC power card PCB. The circuit monitors the 115VAC output of the main transformer (TB 94, 95). This circuit produces a 0 - 5 VDC reference voltage to the main NGC PCB. This reference voltage varies in proportional to the incoming AC voltage. The variance in this voltage will cause the AC Line Voltage gauge to change. When the output of the transformer equals 120 VAC the control will show 100% AC LINE VOLTAGE. This gauge is located under DIAGNOSTIC / GAUGES. 

 Note: The data signal input from the PFDM can be viewed under the MOCON Tab listed as Pfdm Incoming Power Voltage.

Corrective Action:

1. Measure the incoming AC voltage to the machine.
2. Make sure the transformer taps are in the correct voltage range.
3. Make sure the 115 VAC output cable from the transformer terminal block 94, 95 is properly connected to the power card at P1.
   

    Note: When the 115 VAC output of the transformer equals 120VAC the control will show 100% AC LINE VOLTAGE.

4. Measure the brown and the blue wire on the PSUP PCB behind the P20 connector (see illustration) .
   

    Caution: Make sure you use needle tip leads on your meter. Be careful not to short your leads together this can cause damage to the NGC power PCB.

   You should measure approximately:
   • For a Rev -N Power Card 3.56 VDC.
   • For a Rev -P Power Card 3.74 VDC.
   If low or no voltage is measured, the voltage monitor circuit on the power card is damaged and will need to be replaced.

   If the voltage is correct:

   • For a Rev -N Power Card make sure parameter 2009 ADC VALUE FOR AC INPUT is set to 3550.
   • For a Rev -P Power Card make sure parameter 2009 ADC VALUE FOR AC INPUT is set to 2850.

    Note: To view the parameter values refer to Next Generation Control - How to Read an Error Report for more information.

    

   If the value of parameter of 2009 is not correct you will need to load a patch file. Go to the portal click on Service>Machine Activation Codes>NGC-Configuration, and download the patch under the Field Installed Options section.

Intermittent symptoms or alarms can be caused by component failure. Below is a list of possible failures:

1. Missing solder on all or some components pins
2. Poor solder
3. Solder bridges
4. Wrong component installation (orientation)
5. Missing components
   

    Note: Some PCB's have unused circuits and are missing components intentionally, look for broken off components.

6. Broken components
7. Broken pins on IC's
8. Bent pins on the connectors
9. Circuit breakers not installed correctly.

Use a magnifying glass to inspect the circuit components on the front and back of the PSUP PCB. Below are the circuit component zones to inspect depending on the alarm or symptom:

1. Power Fault Detect Module circuit components, look for leaky capacitors, damaged components.
2. Ground fault monitor circuit, inspect surface mount components, resistors and bent pins on the connectors.
3. Circuit breaker trip circuit, pull breakers and inspect for burnt components underneath the breakers.
4. Inspect for bent or missing pins on the connectors.
5. Inspect all solder joints and surface mount components on the back of the PSUP PCB.

 Important: If you find a damaged component, replace the PSUP PCB, inspect the new PSUP PCB circuit components before installing.