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28.5 VDC Ground Power Unit
Models:
11A6647-1000/1010
11B6647-1000/1010
11C6647-1000/1010
11D6647-1000/1010
11A6647C1000/1010
11B6647C1000/1010
11C6647C1000/1010
11D6647C1000/1010
11A6655-1000/1020
11B6655-1000/1020
11C6655-1000/1020
11A6655C1000/1020
11B6655C1000/1020
11C6655C1000/1020
11D6655C1000/1020
11A6665-1000/1010
11B6665-1000/1010
11C6665-1000/1010
11A6666-1000
11B6666-1000
11C6666-1000
12/2006 - Rev. 04
- 20 -
4.6.1
Terminal Strip X1 (continued)
Note that there is only one choice: either to have all remote control signals as a potential-free
contacts or to have all remote control signals using customer’s own 24 V DC voltage. See figure
4.6.1 A and 4.6.1 B below.
First Signal Group
Connection Function
Potential-Free Contacts
(only if link is made between GND
X1.4 and DGND.1 X1.5)
Ext. 24 VDC
Negative potential at DGND.1 X1.5
Positive potential at:
X1.6 ON
Starts the converter
From X1.3 to X1.6
X1.6
X1.7 OFF
Switches off the converter From X1.3 to X1.7
X1.7
X1.8
From X1.3 to X1.8
X1.8
X1.9
From X1.3 to X1.9
X1.9
X1.10
From X1.3 to X1.10
X1.10
X1.11
From X1.3 to X1.11
X1.11
Second Signal Group
Connection
Function
Potential-Free Contacts
(only if link is made between
GND X1.19 and DGND.2
X1.18)
Ext. 24 VDC
Negative potential at DGND
.2 X1.20 Positive potential at:
X1.12
From X1.20 to X1.12
X1.12
X1.13 Plugsw1
Indication aircraft plug is inserted From X1.20 to X1.13
X1.13
X1.14 Special 2 Special signal 2
From X1.20 to X1.14
X1.14
X1.15 Special 3 Special signal 3
From X1.20 to X1.15
X1.15
X1.16 Special 4 Special signal 4
From X1.20 to X1.16
X1.16
X1.17 Special 5 Special signal 5
From X1.20 to X1.17
X1.17
A J 1
(O N com m and)
5
7
3
4
uP
GN D
L+24V
X 1 (B oard
(+)
ext. 24V
(-)
AJ 1
(O N com m and)
5
7
3
4
uP
GN D
L+24V
X 1 (B oard A240)
Figure 4.6.1 A – Start Command
Via External 24 VDC Signal
Figure 4.6.1 B – Start Command
Via External Potential-Free Contact