How to Solve PCC2300 PowerCommand Membrane Buttons Not Functioning

This instruction show you guide on how to solve PCC2300 Powercommand Membrane buttons not working.

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Logic:

Buttons on the membrane are not functioning or cannot naviagte through the screen menus.

 

Possible Causes:

1 Power is not present to the HMI.

2 Membrane navigation buttons are faulty.

 

Diagnosis and Repair:

1 Check the power supply to the HMI:

a Inspect if the connectors J28 and J29 are plugged in properly.

b Measure the voltage between pins J28-1 and J28-3. This should be done with J28 connected to the HMI. To test the voltage, place multimeter probes on the pins through the back side of J28.

If the voltage reading is 10–14 Vdc for a 12 Vdc system or 20–28 Vdc for a 24 Vdc system, the supply volatge is appropriate.

 

c If voltage value at J28 is out of specified range, check for voltage present at connector J25 pins

J25-8 (B+ return for operator panels) and J25-12 (Fused B+). J25 is the other end of J28  connector harness which completes the connection to PCC.

 

If this voltage lies between 10–14 Vdc for a 12 Vdc system or 20–28 Vdc for a 24 Vdc system, the connector J28 is faulty and needs to be replaced.

 

If the voltage value at J25 is out of the specified range, then the source battery voltage is low. Refer to troubleshooting for FC441 (Low battery volatge) if the FC is active. If FC441 is not active, replace the harness.

 

2 Membrane navigation buttons are faulty. Check the button functionality:

a Disconnect all connectors J28, J29 and TB15 from the back of the HMI.

b Reconnect connectors J28 and J29. This recycles power to the HMI.

c If the HMI has established communication with the PCC and the home menu is displayed, try to navigate through the menu using C, home, up, down left, right, OK and soft buttons.

d If the HMI is unable to establish communication with the PCC, disconnect connectors J28 and

J29 from the HMI. Reconnect only J28. Test the HMI in demo model.

 

To enable demo mode, press the “Home” and “C” buttons together for 3 seconds. Once this mode is activated, home menu comes up and “Demo Mode” is displayed at the top of the

screen.

 

Try to navigate through the menu using C, home, up, down left, right, OK and soft buttons.

If this can be done successfully, the membrane buttons are not faulty.

If the buttons still do not function, replace the HMI.

(Any changes made in the demo mode will not affect the controller. Power must be removed from the HMI to end demo mode).

 

If the demo mode cannot be enabled, the required buttons are not functioning. In this case,replace the HMI.