3.2 Displayed State

The 'State' page is the main page of the DEICE-Controller which shows the actual state of all inputs and outputs. The page automatically refreshes every second (the refresh interval is configurable at the Setup / General page).

The page shows 6 tables containing all information about the input / output states, temperature readings and faults. The page is read-only; to change the settings go to the Settings page.

Deice Operation

The operation table shows the current state of the operation parameters:

• Mode: The mode state shows the operation state of the deicing controller. The following modes are possible. OFF - The deice function is off; all other operation states will be reset to the start parameters. MANUAL - The deice will started manually by overwriting the deice sensor state. The heater/blowers will be only started if the ambient sensor state ON, the ambient temperature below the threshold (loop parameter setting page), the internal reflector temperature below the threshold minus the hysteresis and no Alarm of the Heater/Blower. AUTO - The system operates in auto mode which is the normal operation mode. Snow on the deice sensor will trigger the deice procedure.
• Request Deice: This state shows that a deice cycle is requested and the loop control of the heater/blowers is active.
• Active Stages: This state shows which stage of the heater/blowers is active. 0 = no stage is active. 1 = all Heater/Blowers which selected as HBL_SEL1 are active. 2 = Stage 1 and 2 are active. 3 = all stages active.
• Temperature slop: This value shows during the heating phase the temperature slope in the main reflector in °C per min. This value compared with the corresponding threshold is used to select the number of used stages.
• Summary Alarm: This state shows the summary Alarm of the deice section.

Deice Sensor State

The Sensor State shows the actual state of each sensor which is involved in the deice procedure:

• Deice Sensor / Remaining Time: The State ON means the sensor is triggered by snow. The remaining time counter will be started after the Sensor goes back to OFF and will display the time how long the deice cycle will be kept on after loss of the input trigger.
• Optic Sensor / Panel Temp.: This state is in the actual software version for information only and will displayed if snow inside the reflector and the temperature of the panel of the main reflector.
• Ambient Temp. Sensor: This state is ON if the temperature is below about 10°C and the real measured value. Attention: Only if the state is ON and the value is below the adjusted threshold deicing is possible.
• Reflector Temp. bottom / top: This value is used to control the temperature inside the reflector to the adjusted threshold.
• Sub-Reflector Control Temp.: This state controls the ON/OFF State of the Subreflector Heating.

Deice Heater/Blower State

The Heater/Blower State shows the actual state of each Heater/Blower:

• The first column is the index, which wills help to find the device in the setup section.
• The second column shows the name of the specific Heater/Blower unit to indentify the device.
• The third column displayed the state ON/OFF is the logical state of the output. By default ON stands for a closed contact, however, each individual output may be configured to the inverse function at the Setup / Output Circuits page.
• The fourth column gives information in which stages the Heater/Blower operates. Outputs configured as 'UNUSED' show neither a circuit name nor an ON/OFF state.
• The fifeth and sixth column shows the Alarm State of each Heater/Blower Unit. Two seperate Alarm Inputs are foreseen for each Heater/Blower Unit. Inputs configured as 'UNUSED' show neither an OK/FLT state.

Rain Blower Operation

The operation table shows the current state of the operation parameters:

• Mode: The mode state shows the operation state of the rain blower controller. The following modes are possible. OFF - The rain blower function is off, all other operation states will be reseted to the start parameters. MANUAL - The rain blower will started manually by overwriting the rain sensor state. The heater/blower will be only started if no Alarm of the Heater/Blower. AUTO - The system operates in auto mode which is the normal operation mode. Rain or Snow on the deice sensor will trigger the rain blower procedure.
• Request Rainblower: This state shows that a rain blower cycle is requested and the control of the heater/blower is active.
• Summary Alarm: This state shows the summary Alarm of the rain blower section.

Rain Blower Sensor State

The Sensor State shows the actual state of each sensor which is involved in the rain blower procedure:

• Deice or Rain Sensor / Remaining Time: The State ON means the sensor is triggered by snow or rain. The remaining time counter will be started after the Sensor goes back to OFF and will display the time how long the rain blower cycle will be kept on after loss of the input trigger.

Rain Blower Heater/Blower State

The Heater/Blower State shows the actual state of each Heater/Blower:

• The first column is the index, which wills help to find the device in the setup section.
• The second column shows the name of the specific Heater/Blower unit to indentify the device.
• The third column displayed the state ON/OFF is the logical state of the output. By default ON stands for a closed contact, however, each individual output may be configured to the inverse function at the Setup / Output Circuits page.
• The fourth column gives information in which stages the Heater/Blower operates. Outputs configured as 'UNUSED' show neither a circuit name nor an ON/OFF state.
• The fifeth and sixth column shows the Alarm State of each Heater/Blower Unit. Two seperate Alarm Inputs are foreseen for each Heater/Blower Unit. Inputs configured as 'UNUSED' show neither an OK/FLT state.