Trio Avionics EZ Altitude Control - Manual (Page 3)

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Table of Contents
Page
Notice and Warnings .................................................................................................................... 2
1.0 Introduction ................................................................................................................................... 4
2.0 General Information...................................................................................................................... 4
3.0 Operation....................................................................................................................................... 4
3.1 Startup .................................................................................................................................... 5
3.2 “Alt Hold” Mode....................................................................................................................... 5
3.2.1 Fine Adjustments to Altitude ............................................................................. 6
3.2.2 ADJUST TRIM Annunciator .............................................................................. 6
3.3 Pilot Command Steering (PCS) Mode .................................................................................... 7
3.4 System Gain, Brightness, Contrast, Servo Deadband & Trim settings ................................... 7
3.5 Safety Warning Features ........................................................................................................ 8
3.5.1 Audible Warning................................................................................................ 8
3.5.2 G Force Limit..................................................................................................... 8
3.5.3 Servo Clutch Slip............................................................................................... 9
3.5.4 Servo CW (or CCW) Limit ................................................................................. 9
3.5.5 Servo Fault...................................................................................................... 10
4.0 System Safety Features ............................................................................................................. 10
4.1 Aircraft G-Load Sensing ....................................................................................................... 10
4.2 Servo Electronics Monitoring ................................................................................................ 10
4.3 Clutch Slip Detection ............................................................................................................ 10
4.4 Rotation Limit Detection ....................................................................................................... 10
4.5 Supervisory Processor Monitoring........................................................................................ 10
4.6 Servo / Trim Driver Chip Fault Detection .............................................................................. 11
4.7 Disconnect Solenoid............................................................................................................. 11
4.8 SMP and Supervisory Processor Watchdog Interrupts......................................................... 11
5.0 Installing the Altitude Hold Control Module…… ………………............... ……………………….11
5.1 Installing the LCD Switch...................................................................................................... 12
5.2 Installing the Encoder Switch................................................................................................ 12
5.3 Installing the Wiring Harness ................................................................................................ 12
6.0 Servo Installation Setup ............................................................................................................... 13
6.1 Installing the Servo ............................................................................................................... 13
6.2 Servo Mounting Hardware .................................................................................................... 14
6.3 Selecting a Site for the Servo ............................................................................................... 15
6.4 Install the Servo Pushrod...................................................................................................... 16
6.5 Setting Servo Override Force (Slip Clutch) ........................................................................... 16
6.6 Adjustment of Servo Rotation Direction and Servo Neutral .................................................. 17
6.6.1 Servo Direction Setting..................................................................................... 17
6.6.2 Setting Trim Motor Direction ............................................................................. 18
6.6.3 Restore Factory Defaults.................................................................................. 18
7.0 SYSTEM GAIN and SERVO DEADBAND ..................................................................................... 18
7.1 System Gain ........................................................................................................................... 18
7.2 Servo Deadband….................................................................................................................. 19
8.0 The EZ-2 Altitude Hold System with Climb and Descent capability ........................................ 19
8.1 EZ-2, EZ-3 Operation.............................................................................................................. 20
8.1.1 VS Mode........................................................................................................... 20
8.1.2 Minimum and Maximum Airspeed Control........................................................ 21
8.1.3 Setting Minimum and Maximum Airspeed ........................................................ 22
8.1.4 Vertical Rate and Airspeed Track Pilot Command Steering (PCS) .................. 23
9.0 The EZ-3 Altitude Control System with Altitude Pre-select...................................................... 24
9.1 EZ-3 Operation ..................................................................................................................... 25
9.1.1 Elevation (Baro) Set ......................................................................................... 25
9.1.2 EZ-3 Menu System........................................................................................... 26
9.1.3 Enter Vertical Speed (VS) ................................................................................ 28
9.1.4 Enter a Destination Altitude .............................................................................. 28
10.0 Altitude Hold Wiring Diagram ..................................................................................................... 29
11.0 Automatic Trim............................................................................................................................. 30
12.0 Glossary of Terms................................................................................. ……………………….…..32
13.0 Contact Information ..................................................................................................................... 32