Letecké systémy Produkty LUN 1794
LUN1794 Synchro/Resolver to Arinc Converter
Description
The converter is used to convert voltage signal levels from selsyns or resolvers to a digital value corresponding to the angle measured. The digital value is broadcasted on the ARINC bus.
The device has three channels (3x - XYZ, 3x - reference phase) and for each channel it is possible to set the type of input signal synchro/resolver. A logical signal informing about the validity is attached to each channel.
The converter is also capable of performing self-diagnostics; it monitors supply voltage level and input signal or its validity. If an error is detected the converter halts and signalizes error.
Typical aplication
LUN1794 is successfully instaled on L410, JAK40, TU154 aircrafts. There are many old synchro or resolver systems there (LUN1205 Electrical gyro horizont, russian GMK gyro among others) serving as sources of analogue signals for LUN1794 output arinc interface is directly connected to safety aircraft systems from Bendix/King - Honeywell (EGPWS, TCAS System).
LUN1794 is successfully instaled on russian Mi-171 and Mi-17V-5 helicopters. There is as the signal source for heading GMK and for roll and pitch AGB-96D, AGB-3K, ARK-15 or ARK-UD.
Configurations overview
| Inputs | Outputs | P/N | Description |
|
3x Synchro/Resolver |
ARINC429 LS/HS |
LUN1794 |
Synchro/Resolver to ARINC429 |
|
2 x Synchro/Resolver |
ARINC429 LS/HS |
LUN1794.1 |
Synchro/Resolver and Synchro DC to ARINC429 |
|
1 x Synchro/Resolver |
ARINC429 LS/HS |
LUN1794.2 |
Synchro/Resolver and 1phase gyro (ECFR 251) to ARINC429 |
|
1 x Russian Synchro, |
ARINC429 LS/HS |
LUN1794.3 |
Converts analog signals of vertical deviation, lateral deviation and signals of vertical and lateral deviation validity from main output of GNS430 unit to format suitable for Russian navigation indicator NPP or similar. More converts OBS(ZK) selection from Russian NPP to GNS OBS Resolver input. |
|
1 x Synchro /Resolver |
ARINC429 LS/HS |
LUN1794.4 |
Synchro/Resolver and Synchro DC to ARINC429 |
|
1 x Synchro/Resolver |
ARINC429 LS/HS |
LUN1794.5 |
Synchro/Resolver to ARINC429 and Synchro/Resolver (ARINC407) to connect EHSI. |
|
2 x Synchro/Resolver |
ARINC429 LS/HS |
LUN1794.6 |
Synchro/Resolver and DC Baro Correction inHg to ARINC429 |
|
3 x Synchro/Resolver |
ARINC429 LS/HS |
LUN1794.7 |
Synchro/Resolver to ARINC429 and ARINC429 to Runway Markers (GPO Relays) |
ARINC429 labels suported
0320 Magnetic Heading, 0321Drift Angle, 0324 Pitch Angle, 0325 Roll Angle, 0162 ADF Bearing, 0235 Baro Correction inHg, 0100 Selected Course(OBS),
Block diagram
Technical specification
| Type Analog Input | Synchro(XYZ) or Resolver(SIN/COS) |
| Number of Channels | Three Fully Independent |
| Analog Input | 3x synchro/resolver, 3x26V/36V 400 Hz 3x reference signal, 26V/36V 400 Hz (ARINC407 or Russian) |
| Input Impedance | 20kOhm, f=400Hz |
| Conversion Accuracy | ±0,3° |
| Digital Input | 3x flag input - opto isolated |
| Communication interface | Arinc 429 RS232 for service only |
| Power supply | 14-32 VDC |
| Power consumption | 5.0 W |
| Operating temperature range | -55 - 70 °C |
| Storage temperature | -55 - 85°C |
| Humidity | max. 95% |
| Connector | MIL-37,CAN9 |
| Dimensions | 206x70x100 mm |
| Weight | 1500 g |