Rice Lake 820i Programmable Indicator/Controller - Installation Manual - Manual (Page 93)

Appendix 89
10.0 Appendix
10.1 Troubleshooting
Table 10-1 lists general troubleshooting tips for various hardware and software error conditions. See the
following pages for additional information about specific diagnostic tools.
Table 10-1. Basic Troubleshooting
Symptom Cause/Remedy
Indicator does not power up Possible blown fuse or bad power supply.
Check all voltages on CPU board. Power supply should output both +6V and –6V
levels to the CPU board (see Figure
2-3 on page 9). If power supply appears bad,
check the small glass fuse (2.5A, 5x20mm) on the power supply board.
Front panel power indicator blinking ( )
Power supply overloaded. Check for shorts in A/D card regulators or in the
DC-to-DC converter of any installed analog output or pulse input cards.
"Blue screen" Press front panel Display key, press down key, enter 100 using the numeric
keypad, then press Enter. Possible corrupt core software; reset or reload
software.
Hangs in "888" display Corrupt core software. Reset or reload software.
Tare and truck data pointers are corrupt,
Tare storage is corrupt error messages at
startup Possible dead battery. Perform configuration reset then check for low battery
warning on display. If battery is low, replace battery, perform another configuration
reset, then reload files.
Divide by zero error message at startup User program error. See Section 10.1.3 on page 90
ERROR message in weight display Excitation voltage too low or off.
Dashes in weight display Overrange or underrange scale condition. Check scale. For out-of -range
conditions in total scale display, check all scale inputs for positive weight values.
Display reads 0.000000 Scale not updating. Check for bad option card hanging the bus.
Cannot enter setup mode Possible bad switch. Test switch; replace interface board if necessary.
Serial port not responding Possible configuration error. For command input, ensure port INPUT parameter is
set to CMD.
A/D scale out of range Check source scale for proper mechanical operation. Check load cell and cable
connection. Possible bad load cell: check indicator operation with load cell
simulator.
Locked — Scale in use Scale is assigned as an input to a total scale or is the source for a serial scale,
analog output, or setpoint. If not correct, deconfigure this scale assignment and
reconfigure as required.
Serial scale out of range Check source scale for proper mechanical operation. Check cable connection.
Possible format mismatch between serial scale and
820i : Check SFMT
specification under SERIAL menu.
Option x Error Field bus card (Profibus, DeviceNet, or Remote I/O) in slot x failed to initialize.
Option card failure Possible defective card or slot.
Option card hardware diagnostic error Required option card not found. See Section 10.1.1 on page 90.
Note
Always save copies of the indicator configuration, calibration, Revolution ® and iRite-IDE files on a local
PC so that these are available when a software reload or upgrade is required.