System Errors - Hanna Instruments BL120 Instruction Manual

Example: "Menu\pH options\Alarm Activates Relay
• A beep is generated each time an error is triggered if Alarms and Errors Beep is enabled.
• All errors are logged and visible in log RCL.
• Any error condition will inactivate the dosing pumps. After an error has been signaled:
• STATUS LED will turn red and the SERVICE LED will blink.
• The regulator pump status LED will be off.
• The following messages can be displayed close to the related pump icon:
• ERROR - Out of range and overtime errors
• TANK - Low level in Acid/Base and Cl
• R-HOLD blinking - Hold mode remotely activated
• HOLD - Hold input (recirculation pump)
• The Help of measurement screens will display the active errors.

9.4. SYSTEM ERRORS

These events are continuously monitored. One or more events will put the controller in ERROR mode to avoid unpredictable
behavior.
When the controller enters ERROR mode it:
• Stops the dosing pumps
• Stops the logging
• Activates the alarm relay (relay not energized)
• Generates repetitive beep messages
• STATUS LED is blinking in red
• SERVICE LED On
• Turns the pumps Off
• Displays a dedicated error screen with the error code.
The error code is the OR of all errors detected:
• 0x0002 Eeprom malfunctions
• 0x0100 Generated when 24V power supply voltage is out of range
• 0x0200 Generated when 5V power supply voltage is out of range
• 0x0400 Generated when 3V power supply voltage is out of range
• 0x0800 Generated when USB power consumption is out of range
• 0x2000 Generated when probe power voltage is out of range
• 0x4000 Generated when analog outputs power voltage is out of range (BL121, BL123)
• 0x8000 Generated when thermal hardware protector is active
• 0x40000 Generated when internal temperature has mulfunctions
This screen will block access to the other screens.
44
" for pH related errors
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tanks
2