DOC AIRBUS | AMM A320FPASSENGER COMPARTMENT SEATS - DESCRIPTION AND OPERATION
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1. General
The passenger seats are installed in the passenger compartment between FR21 and FR66.
** ON A/C NOT FOR ALL The passenger seats are installed in the passenger compartment between FR21 and FR66.
2. Component Location
A. Seat Layout
Seat Layout - Component Location ** ON A/C NOT FOR ALL
Seat Layout - Component Location ** ON A/C NOT FOR ALL
Seat Layout - Component Location ** ON A/C NOT FOR ALL
Seat Layout - Component Location ** ON A/C NOT FOR ALL
Seat Layout - Component Location ** ON A/C NOT FOR ALL
Seat Layout - Component Location ** ON A/C NOT FOR ALL
For the location of this component, refer to paragraph Component Location
(Ref. AMM D/O 25-00-00-00)
Seat Layout - Component Location ** ON A/C NOT FOR ALL Seat Layout - Component Location ** ON A/C NOT FOR ALL Seat Layout - Component Location ** ON A/C NOT FOR ALL Seat Layout - Component Location ** ON A/C NOT FOR ALL Seat Layout - Component Location ** ON A/C NOT FOR ALL Seat Layout - Component Location ** ON A/C NOT FOR ALL (Ref. AMM D/O 25-00-00-00)
B. In-Seat Power Supply System
In-Seat Power Supply System - Component Location ** ON A/C NOT FOR ALL
In-Seat Power Supply System (ISPSS) - Component Location ** ON A/C NOT FOR ALL
In-Seat Power Supply System (ISPSS) - Component Location ** ON A/C NOT FOR ALL
In-Seat Power Supply System - Component Location ** ON A/C NOT FOR ALL In-Seat Power Supply System (ISPSS) - Component Location ** ON A/C NOT FOR ALL In-Seat Power Supply System (ISPSS) - Component Location ** ON A/C NOT FOR ALL 3. Description
A. Passenger Seats
The passenger seats are installed on the seat tracks of the cabin floor structure. Quick release fittings at the front and the rear legs hold the seats in position. Plastic covers are fitted into the seat tracks to cover the exposed track sections.
The passenger seats are installed on the seat tracks of the cabin floor structure. Quick release fittings at the front and the rear legs hold the seats in position. Plastic covers are fitted into the seat tracks to cover the exposed track sections.
B. In-Seat Power Supply System (ISPSS)
The ISPSS has these components:
Two MCUs, installed in the overhead stowage compartment, control the system.
There is no power at the power outlet units when the flaps/slats are extended.
The cabin crew can always stop the power supply to the power outlet units through a single override switch.
The ISPSS has these components:
Two MCUs, installed in the overhead stowage compartment, control the system.
There is no power at the power outlet units when the flaps/slats are extended.
The cabin crew can always stop the power supply to the power outlet units through a single override switch.
The ISPSS has these components:
Two MCUs, installed in the overhead stowage compartment, control the system.
The cabin crew can always stop the power supply to the power outlet units through a single override switch.
The ISPSS has these components:
- The Master Control Unit
- The seat-to-seat cable
- The In-Seat Power Supply Unit (ISPSU)
- The power outlet unit
- The indication light.
- The power outlet units of the passenger seats.
Two MCUs, installed in the overhead stowage compartment, control the system.
There is no power at the power outlet units when the flaps/slats are extended.
The cabin crew can always stop the power supply to the power outlet units through a single override switch.
The ISPSS has these components:
- The Master Control Unit (MCU)
- The seat-to-seat cable
- The In-Seat Power Supply Unit (ISPSU)
- The power outlet unit
- The Universal Serial Bus (USB) power-outlet unit
- The indication light.
- The power outlet units of the passenger seats
Two MCUs, installed in the overhead stowage compartment, control the system.
There is no power at the power outlet units when the flaps/slats are extended.
The cabin crew can always stop the power supply to the power outlet units through a single override switch.
The ISPSS has these components:
- The Master Control Unit (MCU)
- The seat-to-seat cable
- The advanced power converter
- The In-Seat Power Supply Unit (ISPSU)
- The power outlet unit
- The Universal Serial Bus (USB) power-outlet unit
- The indication light.
- The power outlet units and the (USB) power-outlet units of the passenger seats.
Two MCUs, installed in the overhead stowage compartment, control the system.
The cabin crew can always stop the power supply to the power outlet units through a single override switch.
C. Special Passenger Seats
The passenger seats installed in the emergency exit area are of special design. No other passenger seats are permitted in this area.
For the seat pans:
The passenger seats installed in the emergency exit area are of special design. No other passenger seats are permitted in this area.
For the seat pans:
- The maximum distance permitted between the seat pans is 1 in. (25.4 mm).
- The seat pan support has sufficient strength to prevent the hands or feet to move through or get caught.
- The table latch turns only in one direction.
- The tables latch must turn in this direction to make sure that the table does not release when the passenger will leave the aircraft.
4. Power Supply
A. In-Seat PED-Power Supply
In-Seat Power Supply System - Schematic ** ON A/C NOT FOR ALL
In-Seat Power Supply System - Schematic ** ON A/C NOT FOR ALL
PED Power Supply - Schematic ** ON A/C NOT FOR ALL
Busbar 220XP supplies 115VAC/400Hz to MCUs 55HP1 and 55HP2. Circuit breakers 58HP and 59HP prevent damage to the circuit.
The circuit breakers are on panel 2000VU.
In-Seat Power Supply System - Schematic ** ON A/C NOT FOR ALL In-Seat Power Supply System - Schematic ** ON A/C NOT FOR ALL PED Power Supply - Schematic ** ON A/C NOT FOR ALL The circuit breakers are on panel 2000VU.
5. Component Description
A. Passenger Seats
Seat Description - Tourist Class Example - NWA03 ** ON A/C NOT FOR ALL
Seat Description - All Tourist - (GW1/VIR) ** ON A/C NOT FOR ALL
Seat Description - Tourist Class - Example ** ON A/C NOT FOR ALL
Seat Description - Tourist Class - Example ** ON A/C NOT FOR ALL
Seat Description - Tourist Class - Example ** ON A/C NOT FOR ALL
Seat Description - Tourist Class - Example ** ON A/C NOT FOR ALL
Seat Description - Tourist Class - Example ** ON A/C NOT FOR ALL
Seat Description - First Class Example - NW03/NWA03 ** ON A/C NOT FOR ALL
Seat Description - Business Class ** ON A/C NOT FOR ALL
Seat Description - Business Class ** ON A/C NOT FOR ALL
Seat Description - Business Class ** ON A/C NOT FOR ALL
Seat Description - Business Class ** ON A/C NOT FOR ALL
Seat Description - Business Class/First Class Seat ** ON A/C NOT FOR ALL
Seat Description - Tourist Class Example - NWA03 ** ON A/C NOT FOR ALL Seat Description - All Tourist - (GW1/VIR) ** ON A/C NOT FOR ALL Seat Description - Tourist Class - Example ** ON A/C NOT FOR ALL Seat Description - Tourist Class - Example ** ON A/C NOT FOR ALL Seat Description - Tourist Class - Example ** ON A/C NOT FOR ALL Seat Description - Tourist Class - Example ** ON A/C NOT FOR ALL Seat Description - Tourist Class - Example ** ON A/C NOT FOR ALL Seat Description - First Class Example - NW03/NWA03 ** ON A/C NOT FOR ALL Seat Description - Business Class ** ON A/C NOT FOR ALL Seat Description - Business Class ** ON A/C NOT FOR ALL Seat Description - Business Class ** ON A/C NOT FOR ALL Seat Description - Business Class ** ON A/C NOT FOR ALL Seat Description - Business Class/First Class Seat ** ON A/C NOT FOR ALL (1) The passenger seats have:
- A framework
- Upholstered seat pans
- Upholstered backrest assemblies
- Armrest assemblies
- Seatbelts
- Folding tables
- Pockets.
(a) Seat Framework
The seat framework holds the upholstered seat pans, backrests and the armrests.
A baggage bar is attached to the front framework legs. This prevents forward movement of the baggage, which the passengers keep below the seats. A stowage for life vests is below each seat.
The seat framework holds the upholstered seat pans, backrests and the armrests.
A baggage bar is attached to the front framework legs. This prevents forward movement of the baggage, which the passengers keep below the seats. A stowage for life vests is below each seat.
(b) Seat Pan
The seat pans are installed on the seat framework. They are upholstered and not foldable or adjustable.
The seat pans are installed on the seat framework. They are upholstered and not foldable or adjustable.
(c) Backrest Assembly
The passengers can adjust the upholstered backrest assembly of each seat to the sleeping position or to the fully upright position.
The passengers can adjust the upholstered backrest assembly of each seat to the sleeping position or to the fully upright position.
(d) Armrest Assembly
The upholstered armrest assemblies have a hydraulic recline button control and an ashtray. You can fold the inner armrests between the backrests.
If installed, the entertainment control is in the center armrest (Ref. 23-33-00).
The upholstered armrest assemblies have a hydraulic recline button control and an ashtray. You can fold the inner armrests between the backrests.
If installed, the entertainment control is in the center armrest (Ref. 23-33-00).
(e) Seat Belt Assembly
Each seat has a seat belt assembly. The seat belt assembly is attached to the seat framework and has a buckle to lock and adjust the seat belt length.
Each seat has a seat belt assembly. The seat belt assembly is attached to the seat framework and has a buckle to lock and adjust the seat belt length.
(f) Folding Table Assembly
The folding table assembly folds into a recess in the backrest for stowage. It has movable arms which are attached to the seat framework.
Some seat units have an in-armrest table assembly. If the in-armrest table assembly is not in use, keep it in the armrest below the upholstered arm cap. The in-armrest table is attached to the armrest structure.
The folding table assembly folds into a recess in the backrest for stowage. It has movable arms which are attached to the seat framework.
Some seat units have an in-armrest table assembly. If the in-armrest table assembly is not in use, keep it in the armrest below the upholstered arm cap. The in-armrest table is attached to the armrest structure.
(g) Literature Pocket
Each seat backrest has a literature pocket. Each literature pocket contains an air-sickness bag and a safety instruction card.
Each seat backrest has a literature pocket. Each literature pocket contains an air-sickness bag and a safety instruction card.
B. Master Control Unit (MCU)
MCUs 55HP1 and 55HP2 control and monitor the power supply through the power wall disconnect-boxes to the electrical in-seat equipment which is connected to them.
Each MCU contains these items:
The MCU monitors the total current of the connected electrical consumers. If necessary, it decreases the number of the outlet units which are available. The specified current limits are kept in the configuration module.
The GFI circuitry gives protect from ground fault current more than the customized specified value. If the current value in a power line is more than the specified value, the related three relays disconnect the power from this output column.
The DTMF transmitter supplies control data transmission from the MCU to the components managed by the MCU. The status of 16 discrete inputs is monitored and transmitted continuously in a fixed time frame.
The MCU has an electronic fuse for each power line. The configuration module specifies the trigger level for the electronic fuses. If the current value in a power line is more than the specified value, the related relay disconnects the power from this power line. A discrete signal on the indication panel shows if an electronic fuses is open. The open electronic fuse reset is possible with:
The MCU has an LED indication panel on the front face with the these indication:
MCUs 55HP1 and 55HP2 control and monitor the power supply through the power wall disconnect-boxes to the electrical in-seat equipment that is connected to them.
Each MCU contains these items:
The MCU monitors the total current of the connected electrical consumers. If necessary, the MCU decreases the number of outlet units which are available. The specified current limits are kept into the configuration module.
The GFI circuitry gives more protection against the ground fault current than the specified value. If the current value of the power line is higher than the specified value, the related three relays disconnect the power from this output column.
The DTMF transmitter supplies control data transmission from the MCU to the components managed by the MCU. The status of the 16 discrete inputs is monitored and transmitted continuously in a set time frame.
The MCU has an electronic fuse for each power line. The configuration module specifies the trigger level for the electronic fuses. If the current value in a power line is higher than the specified value, the related relay disconnects the power from this power line. A discrete signal on the indication panel shows if an electronic fuse is open. The open electronic-fuse reset is possible with:
The MCU has a LED indication panel on the front face with these indications:
The MCUs 55HP1 and 55HP2 control and monitor the power supply through the power wall disconnect boxes (PWDB) to the electrical in-seat equipment which is connected to them.
Each MCU contains these items:
The MCU monitors the total current of the connected electrical consumers. If necessary, it decreases the number of the outlet units which are available. The specified current limits are kept in the configuration module.
The GFI circuitry gives protect from ground fault current more than the customized specified value. If the current value in a power line is more than the specified value, the related three relays disconnect the power from this output column.
The DTMF transmitter supplies control data transmission from the MCU to the components managed by the MCU. The status of 16 discrete inputs is monitored and transmitted continuously in a fixed time frame.
The MCU has an electronic fuse for each power line. The configuration module specifies the trigger level for the electronic fuses. If the current value in a power line is more than the specified value, the related relay disconnects the power from this power line. A discrete signal on the indication panel shows if an electronic fuse is open. The open electronic fuse reset is possible with:
The MCU has an LED indication panel on the front face with the these indication:
MCUs 55HP1 and 55HP2 control and monitor the power supply through the power wall disconnect-boxes to the electrical in-seat equipment which is connected to them.
Each MCU contains these items:
- Five output columns, each with a three-phases 115VAC/400Hz
- Five Ground Fault Interruption (GFI)
- A Dual Tone Multi Frequency (DTMF) transmitter
- An RS232 interface for shop maintenance
- An indication panel
- A circuit breaker panel
- A configuration module (CM)
- An interface to the in-flight entertainment system.
The MCU monitors the total current of the connected electrical consumers. If necessary, it decreases the number of the outlet units which are available. The specified current limits are kept in the configuration module.
The GFI circuitry gives protect from ground fault current more than the customized specified value. If the current value in a power line is more than the specified value, the related three relays disconnect the power from this output column.
The DTMF transmitter supplies control data transmission from the MCU to the components managed by the MCU. The status of 16 discrete inputs is monitored and transmitted continuously in a fixed time frame.
The MCU has an electronic fuse for each power line. The configuration module specifies the trigger level for the electronic fuses. If the current value in a power line is more than the specified value, the related relay disconnects the power from this power line. A discrete signal on the indication panel shows if an electronic fuses is open. The open electronic fuse reset is possible with:
- A power-up of the MCU
- A system reset
- A discrete electronic-fuse reset.
- DC level 20VDC +/-2 VDC = disables all power outlet units
- DC level 12VDC +/- 1VDC = disables all power outlet units that are not used.
- DC level 3VDC +/-2 VDC = normal operation mode for all power outlet units.
The MCU has an LED indication panel on the front face with the these indication:
- One power state LED (yellow)
- One unit BITE LED (green)
- Five port power state LEDs (yellow)
- Five port BITE LEDs (green)
MCUs 55HP1 and 55HP2 control and monitor the power supply through the power wall disconnect-boxes to the electrical in-seat equipment that is connected to them.
Each MCU contains these items:
- Five output columns, each with a three-phases 115VAC/400Hz
- Five Ground Fault Interruption (GFI) circuits
- A Dual Tone Multiple Frequency (DTMF) transmitter
- A RS232 interface for shop maintenance
- An indication panel
- A configuration module
- An interface to the In-Flight Entertainment (IFE) system.
The MCU monitors the total current of the connected electrical consumers. If necessary, the MCU decreases the number of outlet units which are available. The specified current limits are kept into the configuration module.
The GFI circuitry gives more protection against the ground fault current than the specified value. If the current value of the power line is higher than the specified value, the related three relays disconnect the power from this output column.
The DTMF transmitter supplies control data transmission from the MCU to the components managed by the MCU. The status of the 16 discrete inputs is monitored and transmitted continuously in a set time frame.
The MCU has an electronic fuse for each power line. The configuration module specifies the trigger level for the electronic fuses. If the current value in a power line is higher than the specified value, the related relay disconnects the power from this power line. A discrete signal on the indication panel shows if an electronic fuse is open. The open electronic-fuse reset is possible with:
- The power-up of the MCU
- The reset of the system
- The reset of the discrete electronic fuse.
- High-level = disables all power outlet units
- Middle-level = disables all power outlet units that are not used
- Low-level = normal operation mode for all power outlet units.
The MCU has a LED indication panel on the front face with these indications:
- Three input power LEDs (green)
- One BITE LED (can be green, amber or red)
- Five GFI LEDs (can be green, amber or red)
- Five output power LEDs (green).
The MCUs 55HP1 and 55HP2 control and monitor the power supply through the power wall disconnect boxes (PWDB) to the electrical in-seat equipment which is connected to them.
Each MCU contains these items:
- Five output columns, each with three phases 115VAC/400Hz
- Five Ground Fault Interruption (GFI)
- A Dual Tone Multi Frequency (DTMF) transmitter
- An RS232 interface for shop maintenance
- An indication panel
- A circuit breaker panel
- A configuration module
- An interface to the in-flight entertainment system.
The MCU monitors the total current of the connected electrical consumers. If necessary, it decreases the number of the outlet units which are available. The specified current limits are kept in the configuration module.
The GFI circuitry gives protect from ground fault current more than the customized specified value. If the current value in a power line is more than the specified value, the related three relays disconnect the power from this output column.
The DTMF transmitter supplies control data transmission from the MCU to the components managed by the MCU. The status of 16 discrete inputs is monitored and transmitted continuously in a fixed time frame.
The MCU has an electronic fuse for each power line. The configuration module specifies the trigger level for the electronic fuses. If the current value in a power line is more than the specified value, the related relay disconnects the power from this power line. A discrete signal on the indication panel shows if an electronic fuse is open. The open electronic fuse reset is possible with:
- A power-up of the MCU
- A system reset
- A discrete electronic-fuse reset.
- DC level 20VDC +/-2 VDC = disables all power outlet units
- DC level 12VDC +/- 1VDC = disables all power outlet units that are not used
- DC level 3VDC +/-2 VDC = normal operation mode for all power outlet units.
The MCU has an LED indication panel on the front face with the these indication:
- One power state LED (yellow)
- One unit BITE LED (green)
- Five port power state LEDs (yellow)
- Five port BITE LEDs (green)
C. Seat to Seat Cable
The seat-to-seat cables supply three-phase 115VAC/400Hz power from the power wall disconnect-box through the related seat interface connectors. The seat unit uses only the phase which comes through connector pin 1. The other two phases are not used at this seat unit.
All three phases go to the next seat unit.
There is a phase rotation between the seat units. For example:
The seat-to-seat cables supply three-phase 115VAC/400Hz power from the power wall disconnect-box through the related seat interface connectors. The seat unit uses only the phase which comes through connector pin 1. The other two phases are not used at this seat unit.
All three phases go to the next seat unit.
There is a phase rotation between the seat units. For example:
- Seat unit 1 uses phase A.
- Seat unit 2 uses phase C.
- Seat unit 3 uses phase B.
- Seat unit 4 uses phase A, etc.
D. Power Supply for the Power Outlet Unit
The In-Seat Power Supply Unit (ISPSU) controls the power supply to the power outlet units of the related seat unit.
The ISPSU:
The ISPSU:
controls the power supply to the power outlet units of the related seats.
The advanced power converter:
The In-Seat Power Supply Unit (ISPSU) controls the power supply to the power outlet units of the related seat unit.
The ISPSU:
- Supplies the power outlet units with 110VAC/60Hz
- Supplies the additional indication light with 5VDC
- Monitors the output power and connects or disconnects the power to the power outlet units
- Controls the additional indication light for PED power in-use.
The ISPSU:
- Supplies the power outlet units with 110VAC/60Hz
- Supplies the USB power-outlet units with 28VDC
- Controls the indication light for PED power in-use with 5VDC
- Monitors the output power and connects or disconnects the power to the related power outlet units.
controls the power supply to the power outlet units of the related seats.
The advanced power converter:
- Supplies the power outlet units with 110VAC/60Hz
- Supplies the USB power-outlet units with 28VDC
- Controls the additional indication light for PED power in-use with 5VDC
- Monitors the output power and connects or disconnects the power to the related power outlet units.
- Supplies the USB power-outlet units with 12VDC
- Supplies the power outlet units with 110VAC/60Hz
- Controls the additional indication light for PED power in-use with 5VDC
- Monitors the output power and connects or disconnects the power to the power outlet units.
E. Power Outlet Unit
The power outlet unit supplies 110VAC/60Hz to the PED of the passengers. The outlet unit has a protection to prevent incorrect operation by the passengers. Power is only available when a standard connector is fully engaged in the outlet unit.
The outlet unit has an LED that is:
The USB power-outlet unit supplies 5VDC to the PED of the passengers.
The outlet unit has a protection to prevent incorrect operation by the passenger. Power is only available when a standard connector is fully engaged in the outlet unit.
The power outlet unit has a LED that is:
The power outlet unit/USB supplies 110V/60Hz and 5VDC to the PED of the passengers. The USB-power outlet unit supplies 5VDC to the PED of the passengers. The outlet units have a protection to prevent incorrect operation bythe passengers. Power is only available when a standard connector is fully engaged in the outlet unit.
The outlet units have a LED that is:
The power outlet unit supplies 110VAC/60Hz to the PED of the passengers. The outlet unit has a protection to prevent incorrect operation by the passengers. Power is only available when a standard connector is fully engaged in the outlet unit.
The outlet unit has an LED that is:
- Green if the power is available
- Red if the electrical box has a Build-In Test Equipment (BITE) failure, a GFI trip or an over-temperature condition.
The USB power-outlet unit supplies 5VDC to the PED of the passengers.
The outlet unit has a protection to prevent incorrect operation by the passenger. Power is only available when a standard connector is fully engaged in the outlet unit.
The power outlet unit has a LED that is:
- Green, if the power is available
- Red, if the power is not available.
- On, if the power is available
- Off, if the power is not available.
The power outlet unit/USB supplies 110V/60Hz and 5VDC to the PED of the passengers. The USB-power outlet unit supplies 5VDC to the PED of the passengers. The outlet units have a protection to prevent incorrect operation bythe passengers. Power is only available when a standard connector is fully engaged in the outlet unit.
The outlet units have a LED that is:
- Green if the power is available
- Red if the electrical box has a Build-In Test Equipment (BITE) failure, a GFI trip or an over-temperature condition.
- On if the power is available
- Off if the power is not available.
6. Operation/Control and Indicating
The power system operates as soon as busbar 220XP has 115VAC.
MCUs 55HP1 and 55HP2 control the power supply. Each MCU measures the current load of each of the 15 power lines. As a result from the measured current, these operation modes are possible:
In disabled mode, all outlet units have no power supply.
In restricted operation, all outlet units which the passengers do not use are disabled because of power limitation parameters given in the configuration module.
In overload operation, the related power line(s) and the connected system interfaces are disabled because of power limitation parameters which are given in the configuration module. The specified parameters in the configuration module give the power management of the MCU.
The indication panel shows the operation mode and power status as follows:
The PED power switch controls the output at the PED power outlet units.
It is at Flight Attendant Panel (FAP) 120RH.
The PED power is automatically de-energized when the passenger emergency-oxygen system is activated or the flaps/slats are extracted.
The power system operates as soon as busbar 220XP has 115VAC.
MCUs 55HP1 and 55HP2 control the power supply. Each MCU measures the current load of each of the 15 power lines. As a result from the measured current, these operation modes are possible:
If disabled, there is no power at all installed outlet units.
In restricted operation, all not used outlet units are disabled because of power limitation parameters given in the configuration module.
In overload operation, the related power line(s) and the connected system interfaces are disabled because of power limitation parameters given in the configuration module. The specified parameters in the configuration module give the power management of the MCU.
The indication panel shows the operation mode and the power status as follows:
The PED power switch controls the output at the PED power-outlet units.
The PED power switch is at Flight Attendant Panel (FAP) 120RH.
The PED power is automatically de-energized when the passenger emergency-oxygen system is activated.
The power system operates as soon as busbar 220XP has 115VAC.
MCUs 55HP1 and 55HP2 control the power supply. Each MCU measures the current load of each of the 15 power lines. As a result from the measured current, these operation modes are possible:
In disabled mode, all outlet units have no power supply.
In restricted operation, all outlet units which the passengers do not use are disabled because of power limitation parameters given in the configuration module.
In overload operation, the related power line(s) and the connected system interfaces are disabled because of power limitation parameters given in the configuration module. The specified parameters in the configuration module give the power management of the MCU.
The indication panel shows the operation mode and power status as follows:
The PED power switch controls the output at the PED power outlet units.
The PED power switch is at Flight Attendant Panel (FAP) 120RH.
The PED power is automatically de-energized when the passenger emergency-oxygen system is activated.
One more indication light is installed on the aisle side of each seat unit to show if a passenger uses the PED power supply.
One more indication light is installed at the aisle side of each seat unit to show if a passenger uses the PED power supply.
During power-up the indication light comes ON for approximately 30 seconds. The indication light goes OFF if the ISPSU BITE test is correct. If the ISPSU BITE test is not correct, the indication light flashes for approximately five minutes and then goes OFF.
One more indication light is installed on the aisle side of each seat unit to show if a passenger uses the PED power supply.
During power-up, the indication light comes on for approximately 60 seconds. The indication light goes off if the ISPSU BITE test is correct. If the ISPSU BITE test is not correct, the indication light flashes for approximately five minutes and then goes off.
The power system operates as soon as busbar 220XP has 115VAC.
MCUs 55HP1 and 55HP2 control the power supply. Each MCU measures the current load of each of the 15 power lines. As a result from the measured current, these operation modes are possible:
- Normal operation
- Disabled (PED power only)
- Restricted operation (PED power only)
- Overload operation.
In disabled mode, all outlet units have no power supply.
In restricted operation, all outlet units which the passengers do not use are disabled because of power limitation parameters given in the configuration module.
In overload operation, the related power line(s) and the connected system interfaces are disabled because of power limitation parameters which are given in the configuration module. The specified parameters in the configuration module give the power management of the MCU.
The indication panel shows the operation mode and power status as follows:
- The input power LED is Green = power is normal
- The input power LED flashes Green = overvoltage
- The input power LED is OFF = undervoltage
- The BITE LED is Green = normal operation
- The BITE LED is Amber = power on self-test
- The BITE LED is Red = MCU defective
- The GFI LED is Green = normal operation
- The GFI LED is Amber = GFI released
- The GFI LED is Red = defective self-test
- The output power LED is Green = normal operation
- The output power LED is OFF = no output power.
The PED power switch controls the output at the PED power outlet units.
It is at Flight Attendant Panel (FAP) 120RH.
The PED power is automatically de-energized when the passenger emergency-oxygen system is activated or the flaps/slats are extracted.
The power system operates as soon as busbar 220XP has 115VAC.
MCUs 55HP1 and 55HP2 control the power supply. Each MCU measures the current load of each of the 15 power lines. As a result from the measured current, these operation modes are possible:
- Normal operation
- Disabled (PED power only)
- Restricted operation (PED power only)
- Overload operation.
If disabled, there is no power at all installed outlet units.
In restricted operation, all not used outlet units are disabled because of power limitation parameters given in the configuration module.
In overload operation, the related power line(s) and the connected system interfaces are disabled because of power limitation parameters given in the configuration module. The specified parameters in the configuration module give the power management of the MCU.
The indication panel shows the operation mode and the power status as follows:
- The power state LED is yellow = power is applicable at the MCU
- The power state LED flashes yellow = phases missing at input
- The power state LED is OFF = no input power available
- The unit BITE LED is green = normal operation, internal power available
- The unit BITE LED flashes green = system BITE failure
- The unit BITE LED is OFF = MCU BITE failure, no internal power available
- The port power state LED is yellow and port BITE is green = output in operation, normal operation
- The port power state LED is OFF and the port BITE LED is green = output not in operation, circuit do work normal
- The port power state LED is OFF and the port BITE LED flashes green = all circuit breakers are open or GFI released
- The port power state LED is yellow and the port BITE LED is OFF = circuitry failure, output fully in operation
- The port power state LED and the port BITE LED are OFF = circuitry failure, output not in operation.
The PED power switch controls the output at the PED power-outlet units.
The PED power switch is at Flight Attendant Panel (FAP) 120RH.
The PED power is automatically de-energized when the passenger emergency-oxygen system is activated.
The power system operates as soon as busbar 220XP has 115VAC.
MCUs 55HP1 and 55HP2 control the power supply. Each MCU measures the current load of each of the 15 power lines. As a result from the measured current, these operation modes are possible:
- Normal operation
- Disabled (PED power only)
- Restricted operation (PED power only)
- Overload operation.
In disabled mode, all outlet units have no power supply.
In restricted operation, all outlet units which the passengers do not use are disabled because of power limitation parameters given in the configuration module.
In overload operation, the related power line(s) and the connected system interfaces are disabled because of power limitation parameters given in the configuration module. The specified parameters in the configuration module give the power management of the MCU.
The indication panel shows the operation mode and power status as follows:
- The input power LED is green = power is normal
- The input power LED flashes green = overvoltage
- The input power LED is off = undervoltage
- The BITE LED is green = normal operation
- The BITE LED is amber = power on self-test
- The BITE LED is red = MCU defective
- The GFI LED is green = normal operation
- The GFI LED is amber = GFI released
- The GFI LED is red = defective self-test
- The output power LED is green = normal operation
- The output power LED is off = no output power.
The PED power switch controls the output at the PED power outlet units.
The PED power switch is at Flight Attendant Panel (FAP) 120RH.
The PED power is automatically de-energized when the passenger emergency-oxygen system is activated.
One more indication light is installed on the aisle side of each seat unit to show if a passenger uses the PED power supply.
One more indication light is installed at the aisle side of each seat unit to show if a passenger uses the PED power supply.
During power-up the indication light comes ON for approximately 30 seconds. The indication light goes OFF if the ISPSU BITE test is correct. If the ISPSU BITE test is not correct, the indication light flashes for approximately five minutes and then goes OFF.
One more indication light is installed on the aisle side of each seat unit to show if a passenger uses the PED power supply.
During power-up, the indication light comes on for approximately 60 seconds. The indication light goes off if the ISPSU BITE test is correct. If the ISPSU BITE test is not correct, the indication light flashes for approximately five minutes and then goes off.