MercuryiTC
©2014 Oxford Instruments Omicron NanoScience. All rights reserved.
Page 159
16.3 Directory of alarms
The following table provides a complete list of alarms, together with associated interlocks, as
appropriate.
Alarm Interlock What to do
Temperature board
Open circuit Heater OFF Look for open circuit on the sensor input
Short circuit Look for short circuit on the sensor input
Calibration error Recalibrate
Firmware error Error in Board firmware. Update firmware.
Board not configured Firmware not loaded correctly. Update firmware.
Heater board
Open circuit Heater OFF Look for open circuit on the heater output
Short circuit Look for short circuit on the heater output
Over current Look for partial short circuits (low impedance)
Over temperature
Look for ventilation problems or high ambient
temperature
Calibration error Recalibrate
Firmware error Heater OFF Error in Board firmware. Update firmware.
Board not configured Firmware not loaded correctly. Update firmware.
Auxiliary I/O board
Firmware error Error in Board firmware. Update firmware.
Board not configured Firmware not loaded correctly. Update firmware.
Level meter board
Open circuit Look for open circuit on the probe input
Short circuit Look for short circuit on the probe input
ADC error This is on-board diagnostic. Recalibrate.
Over demand This is on-board diagnostic. Recalibrate.
Over temperature
Firmware error Error in board firmware. Re-start iTC
Board not configured Firmware not loaded correctly. Update firmware.
No reserve Autofill stops after 2hr The auto fill valve is open but the dewar is not filling
Pressure board
Open circuit Look for open circuit on the sensor input
Short circuit Look for short circuit on the sensor input
Calibration error Recalibrate
Firmware error Error in board firmware Update firmware.
Board not configured Firmware not loaded correctly. Update firmware.
Over current Look for partial short circuits (low impedance)
Current leakage Look for short to ground
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