Figure 77: Battery Charger And Battery Pack Connections - ABB XSeriesG4 User Manual

Troubleshooting a blank LCD screen
When the LCD is blank, this means that the unit has entered SLEEP mode. This generally indicates the battery voltage has
dropped below 10.9 Vdc.
Step-by-step instructions
Make a local connection with the XRC
determine the problem.
Check the battery pack cable. It must make a good secure electrical connection with the main electronic board BATT
CONN connector J16 (see Figure 77).
Check that the battery pack cable is securely connected.
Check the battery pack voltage. If the voltage is low, replace with another battery pack.
If voltage is still low, investigate power issues following Figure 80: Power troubleshooting flowchart.
Troubleshooting a low lithium alarm (LL)
When the Low Lithium alarm appears, the lithium battery should be replaced immediately. Failure to replace the lithium battery
could result in loss of data following a power loss. Instructions for replacing the lithium battery may be found in Section 4,
Maintenance.
Troubleshooting a low charger alarm (LC)
The Low Charger alarm is typically displayed if battery charging voltage is less than (+) 0.4 Vdc higher than battery voltage, or
low light conditions exist and the system is charged using a solar power charger.
Step-by-step instructions
Check the battery pack cable. It must make a good secure electrical connection with the main electronic board BATT
CONN connector J16 (see Figure 77).
Check that the battery pack cable is securely connected.
Check the battery pack charging source in PCCU. Under I/O Subsystem in the tree view, open ON-BOARD and select
Auxiliary I/O. Charger voltage and battery voltage are displayed here. If the charger is less than +0.4 Vdc, proceed to
section 5.3, Power troubleshooting.
Troubleshooting an Analog to Digital Failure alarm (AD)
G4
The XRC must have a Measurement Tube Application running to receive this error. If the A to D Failure alarm code is present,
or if the device is in SLEEP mode but is still receiving minimum voltage, it may be necessary to test the data link between the
main electronic board and the transducer. Follow the instructions below to check transducer.
Probable causes of receiving the A to D Failure include:
G4
. This wakes up the unit so that the user may check all alarm conditions and

Figure 77: Battery charger and battery pack connections

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