-
the monitoring of the Line Replaceable Units (LRUs),
-
the tests on the APU system.
B. APU Emergency Shutdown The APU emergency shutdown-system stops the APU if an emergency occurs. The system is automatically activated on the ground if the APU fire and overheat detection system finds an overtemperature in the APU compartment (Ref. 26-13-00). You can also stop the APU manually from:
-
the cockpit,
-
the external power control panel on the nose landing gear (only when the aircraft is on the ground).
R EFF : 001-049, 101-105, 107-107, 151-199, 49-60-00Page 1 201-210, Config-2 Aug 01/05
CES ENGINE CONTROLS - DESCRIPTION AND OPERATION
___________________________________________
1.
General
_______ In order to start, control its performance and to shut off the auxiliary power system, manual and automatic controls are provided. Manual control of the APU is possible through the crew interfaces in the cockpit. Automatic control is accomplished through the Electronic Control Box (ECB) 59KD.
2.
System Description
__________________
A. Control and Monitoring A Full Authority Digital Electronic Control system is contained in the ECB 59KD. The ECB 59KD provides control for the operation and monitoring of the Auxiliary Power Unit (APU). It also provides the communication to the aircrafts other systems. The ECB gives:
-
the control for the automatic operation of the APU,
-
the control for the APU at a constant speed,
-
the protection of the APU if a failure or an overload occurs,
-
the supply of pneumatic and shaft power,
-
the monitoring of the Line Replaceable Units (LRUs),
-
the tests on the APU system.
B. APU Emergency Shutdown The APU emergency shutdown-system stops the APU if an emergency occurs. The system is automatically activated on the ground if the APU fire and overheat detection system finds an overtemperature in the APU compartment (Ref. 26-13-00). You can also stop the APU manually from:
-
the cockpit,
-
the external power control panel on the nose landing gear (only when the aircraft is on the ground).
CONTROL AND MONITORING - DESCRIPTION AND OPERATION
__________________________________________________
R **ON A/C 001-003, 051-099, 401-499,
1. General
_______ A Full Authority Digital Electronic Control system is contained in the ECB 59KD. The ECB 59KD provides control for the operation and monitoring of the Auxiliary Power Unit (APU). It also provides the communication to the aircrafts other systems. The ECB gives:
-
the control for the automatic operation of the APU,
-
the control for the APU at a constant speed,
-
the protection of the APU if a failure or an overload occurs,
-
the supply of pneumatic and shaft power,
-
the monitoring of the Line Replaceable Units (LRUs),
-
the tests on the APU system.
2. Component Location
__________________
R **ON A/C 001-003, 051-099,
(Ref. Fig. 001)
R **ON A/C 401-499,
R (Ref. Fig. 001A)
R **ON A/C 001-003, 051-099, 401-499,
-------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA | | | | DOOR | REF.
-------------------------------------------------------------------------------4KD RELAY - APU MAIN 107VU 126 824AR 6KD RELAY - APU AVAIL 103VU 126 824AR
14KD MASTER SW, P/BSW 25VU 210 59KD BOX - ELECTRONIC CONTROL (ECB) 152 827 49-61-34
Control and Monitoring - Component Location
Figure 001
CES R Control and Monitoring - Component Location R Figure 001A
R EFF : 401-499, 49-61-00Page 3 Config-1 Aug 01/05
CES 3. System Description
__________________
R **ON A/C 001-003, 051-099,
(Ref. Fig. 001)
R **ON A/C 401-499,
R (Ref. Fig. 001A)
R **ON A/C 001-003, 051-099,
A. Electronic Control Box 59KD
(1) The ECB is installed adjacent to the BULK cargo compartment on the right side, between FR58 and FR59. It is held in an ARINC 600-6 mounting rack. The ECB provides full authority digital APU control from the start initialization, during the acceleration, at the governor speed to the shutdown. The ECB monitors the APU speed, the APU temperatures, the load compressor air flow, and other critical parameters based on signal inputs from the accessory sensors and the control switches. These data are used for the calculation and to continuously control:
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