EFD1000 E5 Dual Electronic Flight Instrument (EFI) Install Manual
DOCUMENT # 900-00041-001
PAGE 116-226
REVISION D
© Copyright 2019 Aspen Avionics Inc.
Figure 9-17: S-TEC Autopilot to ACU Interface
P1
P1
P2
P1
P2
109
110
Autopilot can only be connected to ACU #1 in a dual ACU
configuration.
SYSTEM
20/30
SYSTEM 55
SYSTEM
55X
SYSTEM
60-2/65
P1
5
36
17
35
16
30
11
37
18
P2
/GPS MODE SEL
+ RIGHT
+ LEFT
+ LAT FLG
- LAT FLG
+UP
+DN
+VERT FLG
-VERT FLG
/ILS ENERGIZE
_
_
_
26
38
42
49
32
16
10
9
13
14
13
14
30
31
18
19
1
2
21
31
18
19
1
2
45
46
30
23
24
6
77
58
_
_
49
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
_
14
_
_
_
_
13
_
_
_
_
_
_
_
_
_
_
1
This note is not used
SYSTEM
40/50
32
_
17
P3
_
_
_
_
_
_
_
_
P2-38 is GPSS SELECT which is grounded when there is an
A429 GPSS direct connection between GPS and 55X. When
using the EFD1000 GPSS only, this pin is left open.
2
3
4
3
ACU
Refer to autopilot manufacturers’ documentation for autopilot-
side integration information (including autopilot STC compliance
data) and for autopilot and flight director checkout procedures.
This drawing, as it pertains to the non-Aspen equipment, is for
reference only.
3
CRS DATUM
_
11
8
11
28
19
20
29
9
23
22
11
_
31
29
35
_
_
46
_
_
_
_
_
_
_
7
28
29
44
37
_
_
13
12
HDG DATUM
CRS/HDG COM
+15 OUT
HDG-CRS EXT
_
44
_
_
12
_
_
_
_
CRS/HDG Datum is wired to simulate a KI-525A HSI. If existing
HSI is other than KI-525A then autopilot needs to be modified
to accept KI525A inputs.
If existing installation used a DG then a DG Select jumper may
need to be removed. Refer to S-TEC reference material.
ACU HSI TYPE = 0
Configuration Matrix
(see Section 10)
5
6 If the existing DG/HSI is to remain in the aircraft do not parallel
HDG/CRS Datum with ACU. Cap and Stow at DG/HSI.
7
4
1
P3
