TruTrak Vizion 380-385 Install manual - Manual (Page 6)

TruTrak Flight Systems 4 Vizion 380/385 Series Autopilot Installation Manual
December 2013 8300-086 Rev IR
Electrical Pin-out
All TruTrak Vizion 380 and 385 autopilots have consistent wiring requirements. Therefore, this manual covers all such
units, with special notations covering any differences between the units. The table below provides a brief explanation
of each pin function on the main 25-pin connector P101.
P101
Pin
Function Notes
1 Used for external Emergency AP Level button connection.
2 Used for external Emergency AP Level button connection.
3 Control Wheel Switch. Connect as shown in wiring diagram to a SPST momentary switch
located remotely to the autopilot for convenient engage/disengage function.
4 Pitch Servo Torque Control. A signal from the autopilot to the pitch servo which sets the
amount of torque to be delivered by the servo.
5 Pitch Servo Trim Sensor. A signal from the pitch servo to the autopilot which indicates
an out-of-trim condition and its direction.
6 Unused.
7 RS-232 Output. Output to G3X/AFS-5000 series Required for integrated
control mode.
8 Pitch Servo control lines. These lines cause the stepper motor in the pitch servo to run in
the appropriate direction at the desired velocity. They are small-signal lines and do not
have any substantial current-carrying capability or require any special shielding. Connect
to pitch servo as shown on wiring diagram. 9
10
11
12 Yaw Damper option.
13 Ground Connection. Provide #20 AWG to common grounding point.
14 ARINC-A Digital differential signals from Garmin, Sierra, or other panel-mount
receiver which provide directional steering commands (GPSS, GPSV) to
autopilot
Vizion 385 Only
15 ARINC-B
16 Roll Servo Torque Control. A signal from the autopilot to the roll (aileron) servo which
sets the amount of torque to be delivered by the servo.
17 Primary Serial Input. Baud rate selectable 1200, 2400, 4800 or 9600 baud.
Automatically decodes NMEA-0183, Garmin Aviation Format, or Apollo/UPSAT Moving-
Map or GPSS format. Provides directional reference to the autopilot.
18 Auxiliary RS-232 Input. Presently unused.
19 Autopilot Master (+12 to +28 V DC). The autopilot itself draws less than 0.5 ampere.
Most of the current required by the autopilot system is used by the servos (up to 2A per
servo).
20
21
22
23
Roll (aileron) Servo control lines. These lines cause the stepping motor in the roll servo
to run in the appropriate direction at the desired velocity. They are small-signal lines and
do not have any substantial current-carrying capability or require any special shielding.
Connect to roll servo as shown on wiring diagram.
Reverse servo direction
if necessary by
swapping wires on pins
20 and 21. See note 2 on
wiring diagram.
Wiring to roll servo J201 Direction of servo arm / capstan rotation
(as viewed from face of the servo body)
for RIGHT aileron J101 Pin 20 Pin 21
Standard J201-4 J201-5 Servo CCW (counter-clockwise)  RIGHT
Reversed J201-5 J201-4 Servo CW (clockwise)  RIGHT
24 TCB-A Unused at this time, for
future expansion.
25 TCB-B
Rear 25-Pin Connector P101
viewed from rear of unit
1
20 21 22 23 24 25
2 3 4 5 6 7 8 9 10 11 12 13
14 15 16 17 18 19
View of P101
Facing Rear of Programmer
DIGIFLIGHT II PINOUT DESCRIPTION, MAIN I/O CONNECTOR
P101
PIN
FUNCTION
Ground connection for Pitch Reverse Jumper. 1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
Pitch Reverse Jumper. See note 3 on External Wiring Diagram.
CONTROL WHEEL SWITCH
PITCH SERVO TORQUE CONTROL
PITCH SERVO TRIM SENSOR
AUTOPILOT MASTER ( +12 to +28 VDC )
AUX RS-232 OUT (FUTURE EXPANSION)
PITCH SERVO PH2N
PITCH SERVO PH2P
PITCH SERVO PH1N
PITCH SERVO PH1P
No Connection. Reserved for future expansion.
GROUND ( - )
ARINC-429 (A) INPUT
ARINC-429 (B) INPUT
ROLL SERVO TORQUE CONTROL
GPS AVIATION FORMAT OR NMEA-0183 SERIAL INPUT
AUX RS-232 IN (FUTURE EXPANSION)
AUTOPILOT POWER (INTERNALLY CONNECTED TO PIN 6)
ROLL SERVO PH2N
ROLL SERVO PH2P
ROLL SERVO PH1N
ROLL SERVO PH1P
No Connection. Reserved for future expansion.
No Connection. Reserved for future expansion.