EFD1000 E5 Dual Electronic Flight Instrument (EFI) Install Manual
DOCUMENT # 900-00041-001
PAGE 212-226
REVISION D
© Copyright 2019 Aspen Avionics Inc.
NOTE – The EA100 must be configured using the EA100 Tool, See Section E5.8 in this document.
Figure E15: EA100 to Century IIB Attitude Source w/DISC
2
A/P AHRS FAIL light must be installed in the pilots primary field of view. Use light/dimmer/test switch
P/N MS25041-4. Wire as shown. Use 14v or 28v bulb as appropriate.
3
4
5
6
7
GENERAL INSTALLATION NOTES
All wires in this section 22AWG unless otherwise specified
All grounds should be as short as possible
Terminate all shields within connector back shell
EA100
41
39
3
16
1
P2
AP EXCITE HI
AP EXCITE LO
AP ROLL HI
A/P INTRLK COMM
A/P INTRLK ENERGIZED
A
D
ROLL EXC
B
ROLL GYRO SIG
ROLL EXC
The existing autopilot disconnect circuit must be run through an internal relay within the EA100. This
ensures the autopilot cannot be engaged or will disengage if the EA100 attitude is invalid. The
autopilot “sonalert” or disconnect tone must not be interrupted with this relay. Wire as shown.
CD18
Remove wire from Computer AMP pin N or relay and install new pin/wire or cut wire and splice on
new wire. Run new wire from AMP pin N or relay to EA100 P2-41.
3
Before
A/P Disc and Relay (partial)
- - - equals Existing Wires
After
TR2 Transformer/Relay Interface box must be field fabricated using the instructions in this Appendix.
A/P DISC SW
C
ROLL REF
B
D
C
H
AMP
Transformer
Interface Box
(See Figure
E7A for
internal
components
and
connections)
P1
P1
The old wire that was going to Computer AMP pin N or relay will need to be lengthened (by
splicing) and run to EA100 P2-39.
6
7
10
11
1
2
5
14
2
43
44
A/P AHRS COMM
A/P AHRS INVALID
A/P AHRS FAIL
A/P circuit
breaker
(existing)
P2
2
1
3
MS25041-4
20 AWG
20 AWG
EA100
1
1
1
8
7
8
TR2
A/P GND
No flight director with Century IIB
No flight director with Century IIB
No flight director with Century IIB
Existing Wire
– no change
Computer Amp
18
AP ROLL LO
Attitude
Gyro
Connector
Relay -
partial
To CD-27 of (30D207-x) Cable
Assembly or AMP pin N
Autopilot A+ Bus Bar or C/B
A/P DISC SWITCH YOKE
Autopilot A+ Bus Bar or C/B
Existing Wire
– no change
NO
NC
A/P DISC SWITCH YOKE
To CD-27 of (30D207-x) Cable
Assembly or AMP pin N
A/P DISC SW
A/P GND
NO
NC
Note
– not all Century IIB autopilots used a AP DISC relay. If no
relay then connect Computer AMP pin N thru EA100 internal relay.
