System planning, Introduction, System wiring/ electrical interfaces – Honeywell MK VI User Manual
Page 51: Primary power input

Honeywell
MK VI MK VIII EGPWS Installation Design Guide
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SECTION III – SYSTEM PLANNING
3.1 Introductio n
This section provides information for selecting features and wiring the electrical interfaces of the MK VI/MK VIII
EGPWS.
Appendix E Section 5.2 groups features (functions) into sets called Categories. This document follows the
Category structure of the Appendix E. It provides descriptions of the features and instructions for selecting
features and for determining the correct wiring.
Sample wiring diagrams for the most commonly used MK VI/MK VIII EGPWS configurations are provided in
Appendix B.
Make copies of Appendix E Table 5-2 to use for recording feature selections.
Section 6 provides a cross-reference between the MK VI GPWS (Classic) and the MK VI/MK VIII EGPWS
(Enhanced) interfaces.
3.2 System Wir ing/ Electrical Interfaces
System wiring is broken down into the following main components:
-
Electrical Interfaces (power and ground)
- GPS
Antenna
-
Analog and Digital Inputs
- Discrete
Inputs
- Serial
Outputs
- Audio
Outputs
- Discrete
Outputs
- Configuration
Module
Many of these inputs and outputs will be defined as the Categories are selected for Configuration Module
programming. Appendix E Table 8.1-1 shows the typical usage for each pin on the Left (J1), Right (J2) and
Upper (J3) connectors and provides a place for recording the actual usage for this installation.
3.2.1 Primary Po wer Input
The MK VI/VIII EGPWC requires a primary power input (28 VDC input power) and ground. The Primary power
should be connected as follows for the MK VI/VIII EGPWC.
Pin
Signal
*Pin pairs J1-40/J1-60 and
J1-40, J1-60 *
+28 VDC Input
J1-41/J1-61 are internally
J1-41, J1-61 *
+28 VDC Return
shorted to each other.
Recommended EGPWC Power Control Device: 3 Amp Delayed Action Circuit Breaker