L-828 CCRs LC-Type (4, 7.5, and 10 kW/6.6 A/60 Hz)

Troubleshooting

2.Preliminary Troubleshooting

The following is a check list of initial steps to perform.

Check all LED indicators, fuses and circuit breakers. Refer to Table 6-1.

Visually examine all areas of the CCR. Do burnt or loose connections/parts exist?

Is the input voltage present and within +10 to –5% of nominal?

Check all the fuses.

Are the wire harness connectors to the control board fully seated?

Have the PCBs been adjusted in accordance with the instruction manual?

If the CCR works in local but not Remote, check the voltage on the Remote control lines.

Can the CCR be re-energized by turning the rotary switch from OFF to Step B1 (B10)?

Short the output of the CCR with an AWG 8 wire, and turn on the CCR. If the regulator operates normally, the problem is probably load related.

If the CCR turns on and then shuts off after a few seconds and the ammeter has a high current reading, the problem is overcurrent. Adjust the output current accordingly. If the output current is not adjustable, replace the control board restart the regulator.

If the CCR still fails in overcurrent, replace the SCR and restart.

Table 6-1 Fuses and Circuit Breaker

Circuit Breaker/Fuses

Description

Function

Circuit Breaker CB1

 

Protects K1 (contacts), SCR1, L1, L2, and main

 

 

transformer T1

Fuse F1, F2

1 A, Slo-Blo for 480 V CCRs

Protects transformers T3 and T4, contactor K1 (coil),

 

2 A, Slo-Blo for 208, 220, &

triac Q21 and DC power supplies on Control PCB

 

240 V CCRs

 

Fuse F3

¼ A, 250 V, Slo-Blo

Protects internal 120 Vac CCI source and transformer

 

 

T6

Fuse F4

¼ A, 250 V, Slo-Blo

Protects the internal +48 Vdc (on Control PCB) CCI

 

 

source circuitry on the Control PCB

2002 Siemens Airfield Solutions, Incorporated

96A0104B

Page 6-2

All rights reserved

Issued 6/02

 

Page 43
Image 43
Siemens L-828 manual Preliminary Troubleshooting, Circuit Breaker/Fuses Description Function

L-828 specifications

The Siemens L-828 is a state-of-the-art aircraft communication and navigation system that is designed to enhance efficiency and safety in aviation operations. This system is equipped with a range of advanced features that cater to the evolving needs of modern air traffic management and avionics.

One of the standout characteristics of the L-828 is its versatile communication capabilities. It incorporates VHF and UHF radio systems, enabling flexible and reliable communication between pilots, air traffic controllers, and other aircraft. The system supports both voice communication and data link services, ensuring that critical information is exchanged seamlessly during flight operations.

In terms of navigation, the Siemens L-828 is equipped with cutting-edge Global Navigation Satellite System (GNSS) technology. This allows for precise positioning and navigation, essential for modern pilotage in complex airspace environments. With built-in performance monitoring, the system can also provide predictive analytics, which enhances situational awareness for pilots and ground controllers.

The architecture of the L-828 is designed for ease of integration with existing aircraft systems. Its modular design allows for straightforward upgrades and the incorporation of additional functionalities as aviation technology continues to evolve. This adaptability ensures that operators can extend the lifespan of their investment by easily implementing new features without requiring a complete system overhaul.

Another key feature of the Siemens L-828 is its robust cybersecurity measures. In an era where the threat of cyberattacks is growing, the system employs advanced encryption techniques and authentication protocols to safeguard sensitive communications and data. This emphasis on security ensures that both operational integrity and passenger safety are maintained.

Moreover, the Siemens L-828 has user-friendly interfaces that reduce pilot workload and enhance overall flight experience. With intuitive controls and clear displays, pilots can easily access critical information, thereby facilitating smoother and safer flight operations.

In conclusion, the Siemens L-828 represents a significant advancement in aviation communication and navigation technology. Its combination of versatile communication capabilities, advanced navigation systems, modular design, and heightened security protocols makes it a crucial tool for modern aircraft. As the aviation industry continues to evolve, systems like the L-828 will undoubtedly play an indispensable role in optimizing flight operations and ensuring safety in the skies.